4,038 results
Industry
Industry
Environment
Industry
Industry

Dependence of commercially import fish on krill as a food source in south-east Tasmania

Project number: 1979-005
Project Status:
Completed
Budget expenditure: $0.00
Organisation: University of Tasmania (UTAS)
Project start/end date: 28 Dec 1981 - 31 Dec 1981
Contact:
FRDC

Objectives

1. Estimate abundance & production of krill (especially Nyctiphanes australis) in an area of sth-east Tas coastal waters.
2. Study growth & moulting of N. australis to provide data for production estimates.
3. Identify the major predators & estimate their consumption

Final report

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Final Report • 1981-12-31 • 6.16 MB
1979-005-DLD.pdf

Summary

This final report on the project describes data on stomach contents of major fish predators of the euphausiid Nyctiphanes australis.

The study has concluded that: size and stock of krill and its production can be calculated with some degree of confidence; major predators of adult krill can be identified though the greatest mortality, which occurs in the larval stages, is probably due to carnivorous zooplankters; and swarming by krill is of extreme importance in increasing the attraction of krill as food.

Identification of compound responsible for "iodoform-like" off-flavours in prawns and other edible crustaceans

Project number: 1979-003
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Frank Whitfield
Organisation: CSIRO Geelong Waurn Ponds
Project start/end date: 27 Jun 1981 - 29 Jun 1981
Contact:
FRDC

Objectives

1. Isolate, from prawns and other crustaceans, compounds responsible for iodoform-like off-flavours.
2. Determine the structures of these compounds and with the aid of these identifications determine the origin of the compounds.

Final report

Author: Diana J Freeman
Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Final Report • 713.36 KB
1979-003-DLD.pdf

Summary

A wide variety of off-flavour problems associated with crustaceans have in the past been termed "iodoform-like". Work carried out in this Labora­tory showed that the existing off-flavour problems were complex and that the term "iodoform" could only be applied to a proportion of off-flavoured material being brought onto the consumer market. The "iodoform" problem appeared to be principally associated with the endeavour prawn, Metapenaeus endeavouri of Western Australia and only occasionally with the large king prawn, Penaeus plebejus, caught off the eastern coast of Australia.

A problem of greater commercial significance occurs with the deep-sea royal red prawn, Hymenopenaeus sibogae and the shallow water sand-lobster, Ibacus peronii, both of which have been described as having an "iodoform" off-flavour. However when first confronted with the problem in this Laboratory, the flavour was described as resembling that of garlic with a pronounced metallic after-taste. It has been shown that this garlic­ metallic off-flavour is multicomponent, and that in the case of the royal red prawn it does not arise as a consequence of poor handling techniques. In contrast, two minor off-flavours described as rotten onion and moth-ball were directly associated with microbial spoilage resulting from poor handling procedures. Consequently, certain recommendations have been made that will alleviate some of the off-flavours and give rise to a product of greater visual appeal

Industry
PROJECT NUMBER • 1978-049
PROJECT STATUS:
COMPLETED

Development of the new purse seine method and equipment into the pelagic fisheries

Following the successes achieved from the 77/78 F.I.R.T.A. project "Design and development of a new purse seining method and equipment" a further grant of $27,580 was allocated from F.I.R.T.A. to introduce the technique into the pelagic fisheries. As the Mackerel fishery is still in need of...
ORGANISATION:
Leon W Barwell

Improve echo sounder and sonar performance in Australian prawn fisheries

Project number: 1978-048
Project Status:
Completed
Budget expenditure: $0.00
Organisation: Curtin University
Project start/end date: 28 Dec 1979 - 31 Dec 1979
Contact:
FRDC

Objectives

1. Develop and field test a twin beam sounder and automatic target alarm system.
2. Increase beam coverage and facilitate target school location in the Gulf of Carpentaria banana prawn fishery

Final report

Author: Dr J.D. Penrose
Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Final Report • 1979-12-31 • 363.96 KB
1978-048-DLD.pdf

Summary

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief" it was necessary to build and install the sounder system by late 1977, as outlined in the last report to the Fishing Industry Research Committee.

That report also dealt with the system performance during the 1978 banana prawn season. The present report covers work done during the 1979 season in the Gulf of Carpentaria.

Industry
PROJECT NUMBER • 1978-044
PROJECT STATUS:
COMPLETED

Underwater measurement of trawl gear in operation

The objective of this report was to measure trawling gear with the Trawl Instrumentation System (TIS). The method was similar to that described in Cruise Report no. 76. Each net and door combination was towed at various log speeds, and was maintained at each log speed for about 20 minutes while...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
View Filter

Species

Organisation