150 results
Environment
PROJECT NUMBER • 1999-154
PROJECT STATUS:
COMPLETED

Determining biological characteristics of the champagne crab (Hypothalassia armata) for management purposes

During recent years, commercial trap fisheries have developed for the champagne and crystal crabs in deep waters off the lower west and south coasts of Western Australia. Thus, data on crucial aspects of the biology of these species were required to enable plans to be developed for conserving their...
ORGANISATION:
Murdoch University

Australian salmon (Arripis trutta): Population structure, reproduction, diet and composition of commercial and recreational catches in NSW

Project number: 2006-018
Project Status:
Completed
Budget expenditure: $629,386.00
Principal Investigator: John Stewart
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 29 Sep 2006 - 30 Sep 2009
Contact:
FRDC

Need

The eastern Australian salmon stock appears to have increased substantially in recent times and is believed to be under-utilized. Despite this, management of this species in NSW has been contentious, and is restricted by a lack of knowledge on biology and population dynamics. Specifically, managers require information that will assist their decision making concerning: (i) the status of the stock; (ii) potential expansion of the commercial fishery; (iii) impacts of resource allocation, and; (iv) ecosystem effects of salmon population expansion.

There is a lack of information on the sizes and ages of salmon being harvested and little knowledge of their biology. Research on age and growth in the 1970’s was based on scales, which have since been shown to be inaccurate (Egglestone 1975). Studies on reproduction have been limited to the timing of spawning in the southern regions. Results from this project will provide the necessary information on the composition of landings, age, growth, reproduction, movements and diet to enable informed management of the salmon resource. This project aims to address issues directly related to NSW management, however the baseline information will be valuable for management across the range of the stock.

The project outcomes of improved knowledge and management of salmon will directly address the FRDC R&D program “Natural Resources Sustainability” and the strategic challenge to “Improve the sustainability of natural resources supporting wild-catch and aquaculture”. At the state level, this project will satisfy three priority areas of research listed under the key document “Planning strategic research, aquaculture and aquatic conservation in New South Wales, 2004-2009.” These are: (i) to examine the predatory impacts of Australian salmon on other commercially important fish species; (ii) information on age and growth of recreationally important species, and; (iii) development of stock assessments for target species in the ocean hauling fishery.

Objectives

1. Determine whether eastern Australian salmon comprise a single stock along SE Australia
2. Describe the catch composition of eastern Australian salmon taken by commercial and recreational fishers in NSW, including spatial patterns in sizes and ages
3. Describe the reproductive biology of eastern Australian salmon in NSW, including their size/age at maturity and where and when they spawn
4. Model growth (using otolith derived estimates of size-at-age) of eastern Australian Salmon
5. Develop yield per recruit and spawner-biomass per recruit models at present levels of fishing mortality
6. Analyse existing tagging data for patterns of movement and potential stock delineation
7. Describe diet and potential localised impacts on prey items
8. Describe the totemic and cultural significance of Australian salmon to the Aboriginal people of NSW

Fisheries biology and interaction in the northern Australian small mackerel fishery

Project number: 1992-144
Project Status:
Completed
Budget expenditure: $486,531.00
Principal Investigator: Darren Cameron
Organisation: Department of Primary Industries (QLD)
Project start/end date: 17 Apr 1993 - 28 Nov 2003
Contact:
FRDC

Objectives

1. Determine whether the Australian spanish mackerel resource, comprising four main species of the genus Scomberomorous, is exploited recreationally and commercially in three distinct areas of tropical Australia, in each of which the stock of each species is an autonomous stock
2. To determine if the species composition of the resource is the same in the 3 areas
3. To determine if the three unit stocks of search of the 3 smaller species differ as to growth rate, reproductive potential or survival rate under average environmental conditions or in consequence in composition as to sex age and size
4. To determine if the resultsobtained from Deuel surveys will be sufficient basis for allocating fishery access as between commercial and recreational fishers
5. To determine if the Deuel special survey method can yield a reliable estimate of the amount of the fishing for the small mackerels by commercial and recreational fishers in remote regions of northern Australia.

Final report

Author: Darren Cameron and Gavin Begg
Final Report • 2002-05-31 • 10.21 MB
1992-144-DLD.pdf

Summary

The small mackerels comprising school mackerel (Scomberomorus queenslandicus), spotted mackerel (S. munroi) and grey mackerel (S. semifasciatus) are important and valued species to recreational and commercial fishers in northern Australia. Prior to this project very little was known about the basic biology of, or fisheries for, small mackerels. Each species was found to exhibit distinct life history patterns with differing stock structures. Though there is some overlap between fisheries, there was much spatial and temporal separation of the fisheries, with gill net specialisation for each species targeted by the commercial fishery. Recreational hook and line fisheries for school mackerel and spotted mackerel were important with most of the grey mackerel harvest taken by the commercial sector.
Industry
PROJECT NUMBER • 2009-714.30
PROJECT STATUS:
COMPLETED

Seafood CRC: economic management guidance for Australian abalone fisheries

Current Australian abalone fisheries management primarily uses biological and catch data to set total allowable catch limits (TACs). Performance targets are usually based on trends in catch rate or catch and aim to maintain these indicators within historic bounds that have prevented recruitment...
ORGANISATION:
University of Tasmania (UTAS)
Environment
Environment
PROJECT NUMBER • 1983-049
PROJECT STATUS:
COMPLETED

Northern pelagic fish stock research

In 1982, CSIRO applied to the Fishing Industry Research Trust Account for funding of a joint biological investigation of northern Australian pelagic fish stocks. At that time these stocks supported a Taiwanese surface gill-net fishery based on sharks, tunas and Spanish mackerel. During the 1970's...
ORGANISATION:
CSIRO Oceans and Atmosphere Cleveland
Environment
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Industry
PROJECT NUMBER • 2015-202
PROJECT STATUS:
COMPLETED

Maximising net economic returns from a multispecies fishery

Achieving fishery MEY may result in a reduction in net economic returns in a broader sense if the loss to consumers exceeds the gain to the industry. Such a loss may occur if supplies to the local market are reduced and prices paid by consumers increase. This results in a transfer of benefits from...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
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