443 results
Environment
PROJECT NUMBER • 2008-103
PROJECT STATUS:
COMPLETED

Tactical Research Fund: Adapting to change - minimising uncertainty about the effects of rapidly-changing environmental conditions on the Queensland Coral Reef Fin Fish Fishery

With the severity and intensity of tropical cyclones predicted to increase with global climate change (Webster et al. 2005), the need to understand the effects of these events on fisheries production is paramount. The northern tropical margin of the Australian continent is subject to tropical...
ORGANISATION:
James Cook University (JCU)

Synthesis of industry information on fishing patterns, technological change and the influence of oceanographic effects on fish stocks in the South East Fishery

Project number: 1997-114
Project Status:
Completed
Budget expenditure: $121,250.00
Principal Investigator: Jeremy D. Prince
Organisation: Biospherics Pty Ltd
Project start/end date: 19 May 1997 - 21 Oct 1998
Contact:
FRDC

Need

In its 1995-2000 research plan the Research Sub-committee of SETMAC identified as high priorities:
- understanding shifts in fishing effort and practices, and
- understanding the effect of climate on fish and fishing practices, together with
- increased colloborative work and communication with industry.

This proposal addresses these priorities and consequently the Research Sub-committee has given it the highest priority for the 1997/98 funding round.

Objectives

1. Synthesise and formalise SEF industry information about factors influencing fishing power, including construct a time series documenting the introduction of new technology.
2. Synthesise and formalise industry information about trends in fishing practices, targeting, by-catch and discarding rates, and influences on fishing practices.
3. Synthesise and formalise SEF industry information about oceanographic factors influencing catches and catch rates of SEF species.
4. Generate ordinal time series for incorporation in General Linear Modelling of catch rate trends within the SEF1 database by SEFAG.
5. Generate hypotheses about trends in SEF catch rates that can be tested through targeted analysis of the SEF1 database by SEFAG.
6. Improve SEFAG stock assessments and government/industry relations in the SEF.

Final report

Environment
PROJECT NUMBER • 2009-019
PROJECT STATUS:
COMPLETED

Evaluating the potential use of change-in-ratio and index removal techniques for determining harvest rates and efficiency increases in the Western Rock Lobster Fishery

This project developed and explored methodology intended to enable the production of more reliable estimates of fishing efficiency increases and harvest rate, such that these estimates might be available for use by fisheries scientists, thereby improving the quality of the management decisions...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 2009-067
PROJECT STATUS:
COMPLETED

Tactical Research Fund: Nutrient and phytoplankton data from Storm Bay to support sustainable resource planning

This project has provided preliminary data on environmental conditions in Storm Bay that is assisting managers and marine industries to better understand effects of climate change and climate variability on fisheries and aquaculture in the region, including changing currents and primary...
ORGANISATION:
University of Tasmania (UTAS)
People
PROJECT NUMBER • 2021-049
PROJECT STATUS:
COMPLETED

Developing and testing a cultural change process in the NSW wild harvest sector: a case study to facilitate a process towards co-management in the NSW Northern Fish Trawl

The Australian and NSW seafood industry has been impacted by several unrelated disrupters that challenges the efficacy of current business models and culture to support business success now and into the future. These and other disruptors are also creating challenges to the approaches taken by and...
ORGANISATION:
Strategic Journeys
Environment

Biological and ecological research needed for the effective management of the bar-cheeked coral trout and the chinaman cod, including an investigation into the factors controlling sex-change in the serranids (cods, groupers and coral trout).

Project number: 1995-025
Project Status:
Completed
Budget expenditure: $28,550.00
Principal Investigator: Bob Black
Organisation: University of Western Australia (UWA)
Project start/end date: 26 Jun 1995 - 25 May 2000
Contact:
FRDC

Objectives

1. The aim of this research programme is to provide data needed for the effective management of serranids, including: Ecological and biological data on the chinaman cod within the Ningaloo recreational fishery.
2. Experimental simulation of line fishing on chinaman cod populations to determine how the social system of this fish is affected by fishing, and its ability to withstand such pressure.
3. Experimental manipulation of chinaman cod social units to determine the mechanisms controlling sex change and the effects of sustained fishing pressure on these mechanisms.
4. Biological and catch data on the bar-cheeked coral trout caught in the Pilbara trawl fishery. A solution to the present wastage of undersized trout caught in this fishery will also be sought.

Final report

ISBN: 0-86422-915-1
Author: Robert Black
Final Report • 2000-01-10 • 2.84 MB
1995-025-DLD.pdf

Summary

This study provides detailed biological and ecological information on the chinaman cod, Epinephelus rivulatus, and biological information on the bar-cheeked coral trout, Plectropomus maculatus, in West Australian waters. Both of these species are members of a large group of predatory fish known as the epinepheline serranids. Serranids are found throughout the tropical and subtropical marine waters of the world, and are valued catches within numerous fisheries. Although some species in the Caribbean have been well studied, there is generally a lack of detailed biological and ecological data on the serranids. In particular, there is little information on the processes controlling sex change in serranid species. This life history pattern, along with the fact that many are long lived and slow growing, may leave serranids particularly vulnerable to fishing pressure. However, without information on the mechanisms controlling sex-change, specific management options for serranid species remains somewhat speculative. 
 
Various serranid species are targeted or caught as by-catch in Australian tropical waters. Nevertheless, apart from coral trout inhabiting the Great Barrier Reef, the biology and ecology of Australian serranids is poorly understood. The present study focussed on the chinaman cod since it is an important species within the Ningaloo Reef recreational fishery. Because it is abundant and accessible, the chinaman cod was also amenable to the logistically difficult task of determining the mechanisms of sex-change in this species. The study of coral trout biology was commenced in response to the capture of undersized fish within the Pilbara trawl fishery. As the current size limit may not be biologically appropriate, samples obtained from the trawl fishery were used to learn more about the biology of this species. 
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