8 results

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. 

Voluntary behaviour change in recreational fisheries to support sustainability and amenity

Project number: 2023-141
Project Status:
Current
Budget expenditure: $193,128.00
Principal Investigator: Matthew Navarro
Organisation: University of Western Australia (UWA)
Project start/end date: 22 Sep 2024 - 29 Sep 2026
Contact:
FRDC

Need

This project responds to an FRDC identified opportunity to review and build on previous experiences aimed towards encouraging recreational fishers to voluntarily diversify their target species.

This project targets three outcomes in the FRDC R&D Plan 2020-25:
-Outcome 1. Growth for enduring prosperity
-Outcome 2. Best practices and production systems
-Outcome 4. Fair and secure access to aquatic resources

Our project consists of two phases, each addressing a discrete need identified through conversations with stakeholders.

Phase 1 – Developing a knowledge base and roadmap:
A robust knowledge base, including data on the the magnitude of behaviour changes achieved by previous initiatives, is required to support the use of voluntary behaviour change interventions for diversifying target species as alternatives to direct regulations. Phase 1 will consist of a backwards looking scan of past-experience to construct this knowledge base from case studies that have implemented an initiative to promote voluntary diversification of recreational target species. This will include a global literature scan, and interviews with stakeholders and managers in Australia to document case studies, identify their successes or failures and compile data on the magnitude of behaviour change achieved. The knowledge base will then be used to identify key knowledge gaps and develop a roadmap of research and information needed to support voluntary behaviour change strategies aimed at diversifying target species as genuine alternatives to direct regulations.

Phase 2 – Improving effectiveness:
Effective behavioural change interventions require careful targeting to ensure they are appropriate and acceptable within a specific context. Phase 2 will look forward with a focus on the future implementation of voluntary approaches that can confidently be applied to promote the voluntary diversification of target species for recreational fishers. This will include a forward-looking test of approaches identified through Phase 1 through interviews, focus groups and a survey of recreational fishers to delve deeply into which approaches are acceptable, where they are acceptable and which approaches are most likely to influence change. The outputs of Phase 2 will include clear advice on which strategies are likely to work in different situations relevant to Australian recreational fisheries.

A project evaluation will take place at the end of phase 1 to evaluate the feasibility of the remaining components, and guide case study selection and strategy for phase 2. This will be based on the interim short report based on phase 1 submitted to the FRDC in the milestone schedule below, as well as progress report 1.

To facilitate co-design and research impact, the research team have engaged with the Australian Fisheries Management Forum (AFMF), the AFSB Fisheries Management Committee (on advice from the AFMF), and the Australian Recreational Fishing Foundation (ARFF). Input from recreational fishing stakeholders into the project will be facilitated through an ARFF advisory panel, with representatives from different jurisdictions across Australia. The advisory panel plan to meet with the research team on 5 occasions across the project (front loaded to facilitate co-design). The model for input from fisheries managers is an on-going discussion but will likely take a similar advisory panel across jurisdictions.

Project risks:
The project relies heavily on the inputs of recreational fishing stakeholders and managers, with potential risks around a lack of availability to participate as well as lack of interest. To manage this risk the project team will work closely with the ARFF advisory group to identify and manage relationships with participants. A secondary project risk is the potential for sharing and disclosure of sensitive information from interviews and focus groups. To manage this risk, the research protocol will be subject to a human ethics review against the National Statement on Ethical Conduct in Human Research. Through this process, issues of anonymity, data management and retention and data sharing will be addressed in-line with national standards and carried throughout the project.

Objectives

1. To develop a global knowledge base of behaviour change strategies that have been used to promote diversification of recreational target species.
2. To identify the magnitude of behaviour change achieved by different strategies.
3. To identify key knowledge gaps forming a road map for supporting voluntary behaviour change strategies aimed at diversifying target species as genuine alternatives to direct regulations.
4. To identify success factors that may have driven success or failure of past behavioural change strategies.
5. To develop a shortlist of strategies that experiences suggest will be effective in an Australian context.
6. To test the shortlist of potential behaviour change strategies from Phase 1 in terms of their acceptability, likelihood to influence change to deepen understanding of success factors (e.g., motivators, species, and/or incentives) within the Australian context.
7. To package key insights, lessons and recommendations for behaviour change initiatives to diversify fish species for recreational fishers.
8. To ensure this knowledge is easily accessed and practical, and framed so as to speak to the values and drivers of recreational fishers.
9. To maximise the reach and amplification of this knowledge through building the capability of fisheries managers.

The use of BRUVs as a tool for assessing marine fisheries and ecosystems: A review of the hurdles and potential

Project number: 2010-002
Project Status:
Completed
Budget expenditure: $30,000.00
Principal Investigator: Euan S. Harvey
Organisation: University of Western Australia (UWA)
Project start/end date: 14 Aug 2010 - 29 Nov 2010
Contact:
FRDC

Need

National reviews of Fisheries R&D needs (FRDC95/055) have identified the need for non-extractive, fishery-independent sampling and stock assessment techniques which are cost-effective, repeatable and robust across and range of habitats and depths. These methods are becoming increasingly important as Australian fisheries face the challenge of addressing ecosystem based fisheries management and climate change. A national workshop on the use of video for sensing the size and abundance of target and non-target fauna in Australian fisheries (FRDC2000/187) highlighted the potential for Baited Remote Underwater Video systems (BRUVs). After a decade, there has been wide adoption of this technique. However, differences in protocols for deployment, analysis and interpretation make spatial and temporal
comparisons of data difficult.

There is the need to develop a robust set of nationally agreed upon protocols to ensure that users are appropriately informed and trained through a comprehensive extension and capacity building program that also identifies key unresolved technical issues.

With the increased testing and use of BRUVs a number of independent developments have occurred. Future technological advances and more detailed statistical and modelling approaches will result in the BRUVs data being more useful for ecosystem assessment and management. Maximising the potential that these advances will provide to Australian fisheries will be achieved by a co-ordinated and
collaborative research strategy. We propose to host a two day workshop to critically evaluate the use of BRUVs as a data collection tool
for scalefishes and sharks. The workshop will identify the strengths, limitations and identify potential solutions.

Objectives

1. To critically evaluate the strengths and limitations of data collected with BRUVS for detecting changes in the relative abundance, length frequency and community composition of scalefishes and sharks.
2. To identify potential solutions to limitations.
3. To develop a nationally agreed to protocol for the deployment of BRUVs and the analysis of the resulting imagery.
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)
Environment
PROJECT NUMBER • 2001-060
PROJECT STATUS:
COMPLETED

Characterising the fish habitats in the Recherche Archipelago, Western Australia

This project is a joint Esperance community (through the Recherche Advisory Group - RAG), research scientist and resource management project. The commitment of RAG has allowed the researchers to efficiently transfer scientific information to the general public of Esperance and the South Coast of...
ORGANISATION:
University of Western Australia (UWA)
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