25,218 results
Environment
PROJECT NUMBER • 1985-076
PROJECT STATUS:
COMPLETED

Otolithic age determination of mature southern bluefin tuna (Thunnus maccoyii)

Otoliths of Southern Bluefin Tuna (Thunnus maccoyii) taken from waters off New South Wales, South Australia, and Western Australia, of between 42 cm and 167 cm F.L. were prepared to reveal annual banding. Methods of preparation and examination are detailed. Otolith growth was demonstrated to be...
ORGANISATION:
John Thorogood
Industry
PROJECT NUMBER • 1985-075
PROJECT STATUS:
COMPLETED

Prawn farming pond management

The bioassay section of this study provides, for the first time, estimations of lethal and growth reducing concentrations for the major production-limiting water quality variables for P. monodon. These critical concentrations were assessed using comparable experimental facilities and procedures....
ORGANISATION:
NSW Department of Primary Industries
Environment
PROJECT NUMBER • 1985-074
PROJECT STATUS:
COMPLETED

The fisheries and biology of snapper, Chrysophrys auratus, in New South Wales

The snapper, Chrysophrys auratus, is an economically valuable common property resource that occurs in large numbers in New South Wales waters. Allegations of a resource decline in this major target species of both commercial and recreational fishermen have led to conflict over fishing access and...
ORGANISATION:
NSW Department of Primary Industries
Environment
PROJECT NUMBER • 1985-071
PROJECT STATUS:
COMPLETED

Redfish tagging study, New South Wales

The purpose of this report is to describe the methods used for tagging redfish and discuss the results achieved by the various segments of the project. In conjunction with the tagging study, data on commercial catches of redfish, fishing effort and catch length frequency were also analysed, and the...
ORGANISATION:
NSW Department of Primary Industries
Environment
PROJECT NUMBER • 1985-067
PROJECT STATUS:
COMPLETED

Purse seining for skipjack tuna and jack mackerel

The main objectives of this project were to develop a purse seine fishery based on the Australian skipjack tuna resources, primarily to supply product to the cannery at Eden, and to develop a complementary purse seine fishery based on the jack mackerel resource off S.E. Australia, especially...
ORGANISATION:
K Warren
Industry
PROJECT NUMBER • 1985-063
PROJECT STATUS:
COMPLETED

Analysis of fish pricing in New South Wales: relationships between prices at auction and retail and between prices at Sydney and regional centres

In this Miscellaneous Bulletin a research project funded by the Fishing Industry Research Committee is reported. The aim of this project was to derive price spreads for the major fish species marketed in Sydney. Weekly auction-retail price spreads for fifteen categories of fish and two categories of...
ORGANISATION:
NSW Department of Primary Industries
Industry
Industry
PROJECT NUMBER • 1985-058
PROJECT STATUS:
COMPLETED

Enhancing the availability of pearl oysters for pearl cultivation in WA

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...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 1985-057
PROJECT STATUS:
COMPLETED

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

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...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
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)
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