170 results

An assessment of stocks of the pearl oyster Pinctada maxima

Project number: 1988-093
Project Status:
Completed
Budget expenditure: $319,675.47
Principal Investigator: Lindsay Joll
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Jun 1990 - 27 Jul 1993
Contact:
FRDC

Objectives

1. Examine growth rates & natural & fishing mortality in selected areas.

Final report

ISBN: 0 7309 59856
Author: Lindsay Joll
Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Final Report • 1994-07-01 • 9.53 MB
1988-093-DLD.pdf

Summary

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were:

  1. The location of stocks within Western Australia, both geographically and by depth.
  2. The population characteristics of the stocks, with emphasis on growth rates and fishing mortality rates.
  3. The reproductive status, which mcluded an examination of the reproductive cycle over a large part of the range of P. maxima in Western Australia and an assessment of the genetic status of pearl oyster stocks across northern Australia.
  4. The measurement of recruitment, using both spat collectors and surveys of the abundance of naturally occuring spat.
  5. The further development of the fishery logbook to provide more detailed data on the operations of the fishing fleet and an understanding of fishing fleet behaviour and technology which allow a proper interpretation of catch-effort data.

The study found that the core area of stock location within Western Australia is that currently fished by the pearl oyster fishery. Some stocks of possible commercial significance were located in deeper waters (20+m depth) off the Pilbara coast. However, the stocks located in the waters off the northern Kimberiey coast were very limited and unlikely to be of commercial significance. It is likely that stocks also exist in deep water (35+m), offshore from the core Eighty Mile Beach fishing area, as this depth range was fished in the early history of the fishery. However, stocks at these depth are outside the scope of the modem fishery because of the safety requirements of the industry.

Research and development of hatchery and nursery culture for the pearl oyster, Pinctada maxima

Project number: 1987-082
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 29 Dec 1988 - 29 Jun 1989
Contact:
FRDC

Objectives

1. Develop appropriate techniques for enhancing gonad development of broodstock.
2. Optimise growth and survival of larvae and newly settled spat. Evaluate practicality of different equipment and develop appropriate protocol for nursery culture

Final report

Author: Robert A Rose
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report • 2017-09-29 • 14.16 MB
1987-082-DLD.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.
Final Report
1987-082.pdf

Summary

The Western Australian Pearling Industry is totally reliant on
quotas of wild stock silver- or goldlip pearl oysters,
Pinctada maxima. Any sustainable expansion of the Industry is
unlikely to occur unless hatchery-propagated oysters become
available as an alternative source to wild stock. This
project sought to establish the broodstock, larval and nursery
phases of culture of P. maxima for the purpose of mass
production of spat.

Developing on-growing techniques and disease prevention husbandry of pearl oysters in WA

Project number: 1987-081
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Lindsay Joll
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1991 - 31 Dec 1991
Contact:
FRDC

Objectives

1. Improve existing methods for on-growing pearl oyster spat to a size suitable for pearl cultivation
2. Develop husbandry protocol for preventing and containing an outbreak of oyster mortality on a farm

Final report

Author: Lindsay Joll
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.
Final Report • 1.08 MB
1987-081-DLD.pdf

Summary

Infection by marine Vlbrlo bacteria is still considered to be
the major opportunistic cause of mass mortalities of pearl
oysters (Pinctada maxima} on farm lease sites in the north
west of Western Australia. Vibriosis of P. maxima was found
to occur following some form of stressful husbandry practice
as similar mortality outbreaks were never apparent in natural
populations of pearl oysters throughout this investigation.
Potentially harmful Vlbrlo species were found to be associated
with pearl oysters in the Broome region throughout the year;
therefore vibriosis could occur at any time to oysters
subjected to excessive stress.

Rapporteur/editor for the Indo-Pacific Commission Symposium on the Exploitation and Management of Marine Fishery Resources in South-east Asia, Darwin, Australia, 16-19 February 1987

Project number: 1986-140
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1988 - 31 Dec 1988
Contact:
FRDC

Objectives

1. Provide a high-quality reporting of the proceedings during the symposium and appropriate editing afterwards for publication

Final report

Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok
Final Report • 1988-12-31 • 23.03 KB
1986-140-DLD.pdf

Summary

FIRTA funds were approved for the consultant services of Dr Donald Hancock;

  1. To attend and act as rapporteur of proceedings of the Symposium
  2. To receive, edit and forward participants' written contributions to the meeting in conjunction with the FAO Rome and Bangkok

Investigations of the effect of water temperature on the growth, recruitment and breeding cycle of the western rock lobster

Project number: 1986-100
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1989 - 31 Dec 1989
Contact:
FRDC

Objectives

1. Deploy automatic temperature recorders in 60m & 10m deep water to monitor sea surface & bottom temperature.
2. Determine if data can explain some variations in rock lobster growth, recruitment & breeding state. Use with other data re fluctuations in abundance

The WA trap and line fishery on the North West Shelf

Project number: 1986-028
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Michael Moran
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1988 - 31 Dec 1988
Contact:
FRDC

Objectives

1. Monitoring of the WA trap and line fishery on the NW Shelf to provide information base for future management of the fishery
2. provide information to assess rehabilitation of multi-species stocks fished until recently.

Final report

Author: Michael Moran
Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Final Report • 1988-12-31 • 3.41 MB
1986-028-DLD.pdf

Summary

Until recently, exploitation of North West Shelf multi-species fish stocks was mainly by the Taiwanese pair-trawl fishery, though other foreign vessels had also fished there. Australian finfish fishing in the region was conducted by a small number of line-fishing boats, working close to the mainland and islands. The Australian market was for larger, higher-valued fish than the broad range of species acceptable to the Taiwanese. These larger species have been those most vulnerable to over-depletion by the foreign trawlers.

Serious trap fishing in these waters began in 1984. There had been trapping for pink snapper in the Shark Bay region since 1959 and it was a group of snapper fishermen who introduced traps to the NW Shelf following the 1984 snapper season. The local line-fishermen opposed the trapping mainly on the grounds that it was more efficient than line-fishing and would lead to over-exploitation of the stocks. There was also concern that traps might be less selective than lines and would catch juveniles of the largest, most valuable species. Some of the line-fishermen adopted the trapping method later that year but others, especially those involved in charter fishing and tourism, maintain their opposition.

Enhancing the availability of pearl oysters for pearl cultivation in WA

Project number: 1985-058
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1987 - 31 Dec 1987
Contact:
FRDC

Objectives

1. Husbandry techniques for nursery & ongrowing culture of hatchery-produced spat for pearl cultivation.
2. Build, evaluate on/offshore equip. Monitor environmental & biological conditions predisposing mortality on transfer to farms.
3. Develop husbandry protocol to prevent & contain mortality outbreak

Final report

Author: Robert A Rose
Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Final Report • 2017-09-29 • 14.16 MB
1985-058-DLD.pdf

Summary

The Western Australian Research Laboratories began investigating the feasibility of artificially propagating the silverlip or goldlip pearl oyster, Pinctada maxima, in 1982 and culminated its study by operating a pilot-scale, seasonal hatchery at the Broome Jetty, Broome, Western Australia from 1986 to 1989. This manual describes the hatchery facilities and husbandry techniques developed during this period for the spawning and culture of the larvae and newly settled spat.

Studies on the breeding stock of the western rock lobster (Panulurus cygnus), in relation to stock and recruitment

Project number: 1985-057
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Chris F. Chubb
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 28 Dec 1988 - 31 Dec 1988
Contact:
FRDC

Objectives

1. Data from WRL breeding stock
investigate repetitive spawning and fecundity. Macroscopic & histological examination of maturation of ovaries.
2. Extend monitoring breeding females.
3. Document positions of major spawning grounds & "desert". Redefine index of abundance

Final report

Author: C Chubb C Dibden K Ellard
Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

Final Report • 2011-08-01 • 1.99 MB
1985-057-DLD.pdf

Summary

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock.

Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data from these studies have resulted in a significant improvement in the understanding of the reproductive biology of this species. Size-related repetitive breeding is now known to be an important feature of reproductive activity in P. cygnus. Additionally, an improved, curvilinear fecundity-carapace length relationship now replaces the linear one reported in the early 1070’s. The interpretation of research log book data has also been enhanced.

The current spawning stock index was reviewed and found to be unrepresentative of the stock as a whole. The basis for the development of a new index (or indices) has been provided by the study.

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