165 results
Environment
PROJECT NUMBER • 2004-101
PROJECT STATUS:
COMPLETED

ESD Reporting and Assessment Subprogram: review of the scope, assessment methods and management responses for fisheries ESD and EBFM in Australia

In 1997 the FRDC Board initiated a review of ESD application across jurisdictions (FRDC Project 98/168), and later worked with the Standing Committee on Fisheries and Aquaculture (SCFA) to develop a national approach to ESD in fisheries. Following on from this project, the FRDC Board suggested that...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
TAGS
Sustainability
Environment
Environment

Determining genetic stock structure of bigeye tuna in the Indian Ocean using mitochondrial DNA and DNA microsatellites.

Project number: 1997-112
Project Status:
Completed
Budget expenditure: $88,398.00
Principal Investigator: Peter Grewe
Organisation: CSIRO Oceans and Atmosphere Hobart
Project start/end date: 22 Jun 1997 - 16 May 2001
:
TAGS
Tagging
Stock Assessment
Remote Sensing

Need

This proposal was developed in response to a call from WCTBFMAC for research into
the population structure of bigeye tuna stocks exploited in the west coast tuna fishery.
The longline fishery for bigeye tuna off the western coast of Australia is a rapidly
expanding fishery due to the high export value of this species. information
regarding the stock structure of bigeye tuna is vital for the long term sustainability of the
fishery. Uncertainty regarding bigeye stock structure seriously restricts the confidence
that scientists and fisheries managers can place in the regional assessments that have been
carried out to date. At a national or sub-regional level, fisheries managers need to have a
better idea of the broader surrounding population of bigeye from which the fish in their
fisheries are drawn. In fact, knowledge of the stock structure of bigeye tuna in the eastern
Indian Ocean has been listed as the number one priority of the Western Coast Tuna and
Billfish Management Advisory Committee.

Objectives

1. To carry out a pilot study into the genetic stock structure of bigeye tuna in the Indian Ocean aimed at determining whether fish from four locations (Western Australia, South Africa, Seychelles, and Indonesia) are drawn from a common gene pool or whether they represent reproductively isolated spawning populations.
2. To compare this Indian Ocean data with data already being collected for the Atlantic Ocean and western tropical Pacific Ocean to gain a broader understanding of the global population structure of bigeye tuna.
3. Should evidence of large scale stock structuring within the Indian Ocean be evident, then a more extensive study will be proposed to indicate the number and extent of the different stocks within the Indian Ocean. This study will likely take the form of a two year proposal. It will attempt to confirm temporal stability of markers and resolve finer population structure by examination of more loci, additional sample locations, and an increased numbers of individuals sampled per location.

Final report

Final Report • 5.54 MB
1997-112-DLD.pdf
Environment
PROJECT NUMBER • 1996-109
PROJECT STATUS:
COMPLETED

Evaluating the costs and benefits of research on stock structure for management of the orange roughy fishery

This report describes a procedure for objectively comparing the likely returns from research programs, particularly those designed for fisheries management purposes. This procedure requires that the management objectives for the fishery are well defined, and that the research is directed at...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
TAGS
Stock Assessment
Environment
PROJECT NUMBER • 2011-032
PROJECT STATUS:
COMPLETED

Incorporating the effects of marine spatial closures in risk assessments and fisheries stock assessments

Within the framework of the Commonwealth Harvest Strategy Policy, the Australian Fisheries Management Authority (AFMA) has adopted clear decision rules to set catch limits for commercially targeted species in Commonwealth fisheries. In several fisheries, AFMA has adopted a tiered harvest strategy...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
TAGS
Sustainability
SPECIES
Silver Trevally
Environment
Environment
PROJECT NUMBER • 1995-035
PROJECT STATUS:
COMPLETED

Development of the egg production method to assess the blue grenadier stock in the South East Fishery

The blue grenadier stock is potentially the largest fish stock in the SEF, and following the decline in quota of orange roughy, the need to assess its potential became urgent. The stock has been surveyed using traditional trawl methods and acoustics, but both methods provide only 'snapshot'...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
TAGS
Stock Assessment
Environment
Environment
PROJECT NUMBER • 2004-099
PROJECT STATUS:
COMPLETED

An integrated monitoring program for the Northern Prawn Fishery: assessing the design and developing techniques to incorporate survey results into fishery assessment

An international review of the Northern Prawn Fishery tiger prawn assessment was carried out in 2001. The review drew attention to the high level of uncertainty in the assessment and recommended that the logbook data be augmented by fishery-independent survey data. In response to the review,...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
TAGS
Survey
SPECIES
King Prawns
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