51 results
People
PROJECT NUMBER • 1993-116
PROJECT STATUS:
COMPLETED

The second international symposium on abalone biology fisheries and culture

The First International Symposium on Abalone Biology, Fisheries and Culture was held in La Paz, Mexico in November 1989. In the closing session of that symposium it was decided to hold the second abalone symposium in Australia in 1993 or 1994. Subsequently, Hobart was chosen as the site and 7-11...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Industry
PROJECT NUMBER • 1987-069
PROJECT STATUS:
COMPLETED

Development of alternative fishing practices for the harvesting of wild and re-seeded scallop beds in Tasmania

OBJECTIVES: a. To determine the efficiency of Beam, Triple and Prawn trawling methods for the harvesting of scatlops. b. To investigate the difference in efficiency between the sputnik dredge and the Japanese Keta-ami dredge. c. To investigate the difference in bottom damage between the sputnik and...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Environment

Histological histochemical and morphological development of striped trumpeter (Latris Lineata) larvae and the effect of larval diet

Project number: 1992-139
Project Status:
Completed
Budget expenditure: $200,019.00
Principal Investigator: Simon Stanley
Organisation: Department of Natural Resources and Environment Tasmania (NRE TAS)
Project start/end date: 26 Sep 1992 - 31 May 1996
Contact:
FRDC

Objectives

1. Histological histochemical and morphological development of striped trumpeter (Latris Lineata) larvae and the effect of larval diet

Final report

Author: Simon Stanley
Final Report • 1995-03-14 • 4.50 MB
1992-139-DLD.pdf

Summary

In November 1992, this project commenced with the development of methods for the evaluation of striped trumpeter (Latris lineata) larvae cultured by the Finfish Development Program (FDP). The first year was spent in the selection of digestive enzymes for investigation and the modification of methods for their detection. In addition to the digestive enzymes selected, lipids and glycogen deposits were also studied to provide an indication of the status of larval energy uptake and storage. The project used the observation and measurement of samples of larvae to provide an assessment of growth, development and the general health of larvae. The methods developed by the project have been detailed in a Technical Report published by the DPI&F.

Preserved samples of larvae were processed, thin-sectioned and stained to provide information on the development of the swimbladder and the gut with its associated organs, as well as the presence of digestive enzymes at different stages of growth. The timing and method of swimbladder inflation, as well as the development of the digestive tract prior to metamorphosis, was investigated, providing valuable basic biological information on the species. This information was used to modify larviculture systems and techniques and resulted in the successful culture of juvenile striped trumpeters, banded morwong and greenback flounder in the 1994 rearing season.

Environment
PROJECT NUMBER • 1990-007
PROJECT STATUS:
COMPLETED

Assessment of spatial and temporal variation in puerulus settlement of the southern rock lobster

The overall goal of the present project was to establish a long term puerulus settlement monitoring program for the southern rock lobster (Jasus edwardsii) in Tasmania. Exploratory sampling was conducted throughout much of the Tasmanian coastline to determine key sites suitable for long term...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Environment
PROJECT NUMBER • 1985-077
PROJECT STATUS:
COMPLETED

Resource monitoring of the jack mackerel purse seining fishery in south-eastern Australia

This program has collected data on the development and performance of the fishery, as well as biological data relevant to assessment of the impact of fishing on the exploited population. The development and operation of the fishing and processing sectors of the fishery are described as are the...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Environment
PROJECT NUMBER • 1988-094
PROJECT STATUS:
COMPLETED

The development of new techniques for assessing and managing the Australian abalone fisheries

In studies of blacklip abalone (Haliotis rubra) in Tasmania conducted during 1983 to 1987, Jeremy Prince and his research team made several important findings concerning the biology and fishery management of this species. These include: Rate of deposition of growth layers in the shell is...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Environment
PROJECT NUMBER • 1985-053
PROJECT STATUS:
COMPLETED

The development of an index for the prediction of catches of blacklip and greenlip abalone, and a technique for ageing these species

The scientific literature has generally accepted that abalone populations are characterised by low levels of settlement and recruitment (Tegner in press), that mortality is relatively low (Doi et al. 1977; Beinssen and Powell 1979; Sainsbury 1982; Shepherd et al. 1982; Fournier and Breen 1983) and...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
Environment
PROJECT NUMBER • 1995-066
PROJECT STATUS:
COMPLETED

Assessment of optimal trapping techniques to control densities of northern Pacific seastars on marine farm leases

The principal aims of this study were to evaluate whether the locally­ produced Whayman-Holdsworth trap provides an effective method for minimising Asterias amurensis infestations on shellfish farms, and to objectively assess the value of seastar traps when used in commercial applications. In an...
ORGANISATION:
Department of Natural Resources and Environment Tasmania (NRE TAS)
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