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Support for 15th International Pectinid Workshop

Project number: 2004-305
Project Status:
Completed
Budget expenditure: $5,000.00
Principal Investigator: Mike Dredge
Organisation: Department of Primary Industries (QLD)
Project start/end date: 30 May 2004 - 30 Jun 2005
Contact:
FRDC

Need

There is considerable impetus and interest in the revival of scallop fisheries and the development of scallop aquaculture in Australia at this time.

The Bass Strait, Victorian and Tasmanian (Pecten) scallop fisheries, which were one of Australia’s most profitable in the 1960s and 1970s, declined markedly in the 80s and all but collapsed in the 1990s. The stock or stocks are showing signs of slow recovery. The saucer scallop (Amusium) fisheries in Queensland and Western Australia have generally been more stable, although recruitment in some areas of Western Australia has shown intermittent but marked spikes ins some years. The Queensland fishery has suffered what is hopefully a short-term decline, probably as a consequence of changes in management arrangements rather than declining population abundance. At the same time, many international fisheries are depressed or collapsing. New forms of assessment based upon spatial data and models are evolving and demonstrating alternative management strategies for such fisheries. This is a global phenomenon best seen in U.S. population modelling for scallops.

Three substantial sea ranching and culture ventures have developed in WA, Queensland and Victoria since 2000. All are linked to or have used FRDC project 2000/190, ‘Feasibility of scallop enhancement and culture in Australian waters’ and other FRDC projects. Scallop aquaculture is growing rapidly in Asia and is generating interest and investment across the globe. Associated culture technology is also increasing.

This is an opportune time for Australian fisheries managers, industry participants, scientists and aquaculturists to learn and share information about scallop fisheries, assessment and aquaculture. Such an opportunity exists via an international scallop workshop that will cover aspects of scallop biology, ecology, fisheries, aquaculture and economics. The 15th International Pectinid Workshop, to be held in Moloolaba in April 2005, will be an informal, interactive and highly informative forum. These Workshops attract a wide range of nationalities and expertise and are unique in the breadth of experience available to participants.

Objectives

1. To support the dissemination of international knowledge and experience on scallop biology, fisheries, aquaculture, economics and related topics to industry and government, through support for the 15th International Pectinid Workshop.

Analysis of the distribution of pilchard eggs off WA to determine stock identity and monitor stock size

Project number: 1992-025
Project Status:
Completed
Budget expenditure: $216,042.54
Principal Investigator: Warrick J. Fletcher
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 22 Mar 1993 - 30 Dec 1996
Contact:
FRDC

Objectives

1. Document the distribution of eggs and larvae of pilchards along the entire south coast of WA during the critical winter season to determine the relationship between spawning at Esperance with the more eastern sites at Bremer Bay and Albany.
2. Determine the relationship between south and west coast pilchard stocks.
3. Examine interannual variation in the distribution and abundance of eggs in relation to changes in catch rates by the fishery and variations in the hydrological conditions particularly water temperature.
4. Provide data inputs on the distribution and abundance patterns of pilchards for the computer simulation model built to assess the state of the fishery.
5. Calculate spawning biomass estimates for the south coast using a modified egg production method

Final report

ISBN: 0-7309-1888-2
Author: Rick Fletcher
Environment
PROJECT NUMBER • 1985-052
PROJECT STATUS:
COMPLETED

Investigation of the present status and potential yield of "whitebait" stocks in Tasmanian rivers

At the time this report was written, there had not been any biological study of the whitebait fishery since the 1940's. That study concentrated on the species most abundant at that time (Lovettia sealii). However, with the decline in the fishery being essentially due to a decrease in abundance of...
ORGANISATION:
Inland Fisheries Service (IFS)

Investigation of school and gummy shark nursery areas in south eastern Tasmania

Project number: 1991-023
Project Status:
Completed
Budget expenditure: $82,663.00
Organisation: CSIRO Oceans and Atmosphere Cleveland
Project start/end date: 28 Jun 1992 - 31 Dec 1992
Contact:
FRDC

Objectives

1. Sampling strategy to estimate density of neonatal & juvenile school & gummy sharks.
Environment
PROJECT NUMBER • 2019-099
PROJECT STATUS:
CURRENT

Climate driven shifts in benthic habitat composition as a potential demographic bottleneck for Western Rocklobster: understanding the role of recruitment habitats to better predict the under-size lobster population for fishery sustainability

The West Coast Rock Lobster Managed Fishery (WCRLMF) is one of the most valuable and sustainable single-species fisheries in Australia. WCRLMF is managed, in part, using larval (puerulus) settlement indices obtained from artificial seagrass stations that are continuously monitored at eight locations...
ORGANISATION:
University of Western Australia (UWA)

Development of an integrated fisheries management model for King George whiting (Sillaginodes punctata) in South Australia

Project number: 1995-008
Project Status:
Completed
Budget expenditure: $461,163.00
Principal Investigator: Anthony J. Fowler
Organisation: SARDI Food Safety and Innovation
Project start/end date: 29 Dec 1995 - 30 Jun 2001
Contact:
FRDC

Objectives

1. To produce an age-structured, spatial-temporal fishery model for King George whiting in South Australia based on a comprehensive understanding of its biology, life-history and genetics as well as an analysis of the fishery. This model will be used as a stock assessment tool to assess management options.
2. To implement a biological research programme to facilitate objective 1/, including: a/. determination of site-specific age-structures based on ageing fish using otoliths, to be used for estimation of demographic parameters
b/. completion of the understanding of the life-history including reproductive, early and adult biological information
c/. assessment of genetic variation amongst populations over two spatial scales (amongst states and amongst regions within SA).
3. To review current commercial catch and effort information to: a/. identify the value of such data for estimating population abundance
b/. continue an on-going assessment of impacts of technological advances in fishing equipment on catch and effort in the commercial sector of the fishery
c/. compare commercial catch with that from recreational catch information currently being collected in SA using creel surveys (FRDC 92/81).

Guide

Author: Anthony Fowler
Guide • 7.64 MB
1995-008-PDT-1.pdf

Summary

The King George Whiting Simulator (WhitSim) is a simulation version of the Whiting Estimator (WhitEst) encased inside a graphical user interface (GUI) that includes geographical information systems (GIS). WhitSim provides the ability to simulate various management strategies and parameter scenarios and interrogate results of the simulation via in-built statistical, curve fitting and indicator analysis modules.

Final Report • 2000-08-31 • 11.76 MB
1995-008-DLD.pdf

Summary

King George whiting (Sillaginodes punctata) remains a prime target species of the marine scalefish fishery of South Australia. Levels of fishing mortality are high on inshore populations throughout the fishery which has caused concern about the level of egg production. This prompted the need for a comprehensive stock assessment for this fishery. However, complicating this task is the fact that the life-history incorporates an obligate migratory step where fish move from shallow, inshore areas where they are heavily targeted, to deeper, more exposed places where the spawning populations occur.

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