PROJECT NUMBER
•
2008-059
PROJECT STATUS:
COMPLETED
ORGANISATION:
Murdoch University
20 results
PROJECT NUMBER
•
2000-311
PROJECT STATUS:
COMPLETED
ORGANISATION:
Murdoch University
PROJECT NUMBER
•
2016-034
PROJECT STATUS:
COMPLETED
Golden fish: evaluating and optimising the biological, social and economic returns of small-scale fisheries
This project investigates recreational and commercial fisher motivations for using a fishery and the beliefs, attitudes and perceived benefits of aquaculture-based enhancement programs and other management options. It also determines the total economic value for recreational fishing for Blue Swimmer...
ORGANISATION:
Murdoch University
SPECIES
PROJECT NUMBER
•
2013-221
PROJECT STATUS:
COMPLETED
Stock enhancement of the Western School Prawn (Metapenaeus dalli) in the Swan-Canning Estuary; evaluating recruitment limitation, environment and release strategies
Keywords: Aquaculture-based enhancement, recreational fishing, restocking, post-release survival, larval ecology, larval taxonomy, fish predation
Executive Summary: This report provides the first comprehensive investigation into the biology and ecology of the Western School Prawn...
ORGANISATION:
Murdoch University
SPECIES
Predicting the impacts of shifting recreational fishing effort towards inshore species
Project number:
2010-001
Project Status:
Completed
Budget expenditure:
$300,439.06
Principal Investigator:
Alex Hesp
Organisation:
Murdoch University
Project start/end date:
31 Jul 2010
-
31 May 2013
Contact:
FRDC
Recreational exploitation of inshore, marine fishes near Perth, WA, including King George Whiting, some other whiting species and Silver Trevally, is likely to increase markedly because of effort transfer from offshore to inshore species, due to new fishing regulations to protect offshore demersal species. No reliable stock assessment information is currently available for any of these species, which may already be overexploited. Furthermore, for King George Whiting and Silver Trevally, current assessment methods are inadequate because offshore movements with increasing body size, combined with different catchabilities and fishing pressures in nearshore and offshore habitats, make it impossible to obtain a representative age composition sample for an overall stock of these species. This problem can be addressed through developing a new stock assessment approach for such species, which is also applicable to other recreational, and commercial species, e.g. Estuary Cod.
The biological information published in reports and papers on commercial and recreational fish species in south-western Australia is often inaccessible to fishers and researchers may not be aware of all available information for those species. A book explaining the basics of fisheries science and outlining key information for important temperate WA fish species would be invaluable for engaging fishers and a valuable reference for researchers and managers.
The proposed project directly addresses an urgent need of the Department of Fisheries, WA, and the recreational sector, to assess likely impacts of recreational effort transfer from offshore to important inshore species. The assessment approach and guide is also very relevant to the commercial sector.
1. Develop a method for estimating mortality in species which exhibit size-related movements
2. Predict impacts of shifting effort towards certain temperate, inshore WA fish species
3. Produce a guide to key temperate WA fishes, for all industry stakeholders
Final report
ISBN:
978-1-921877-05-6
Authors:
Fisher
E.A.
Hesp
S.A.
Hall
N.G. and Sulin
E.H.
Final Report
•
2013-09-15
•
1.49 MB
2010-001-DLD.pdf
The project outputs have led to the following outcomes:
1. A model has been developed enabling reliable estimation of mortality of fish species that undertake size-related, unidirectional, offshore movements from age and length data. This new modelling approach is likely to be applicable to stocks of a number of fish species with this life history attribute, for which current stock status information may be very limited due to the difficulty of obtaining a representative sample for an overall stock.
2. Current age and length composition data and estimates of key stock assessment parameters, including selectivity, movement and fishing mortality, are now available for Silver Trevally and King George Whiting in coastal waters near Perth in Western Australia. Managers are aware that the study results have provided preliminary evidence that Silver Trevally and King George Whiting in waters near Perth are not currently experiencing overfishing.
3. This project has provided managers with information about the relative extents to which the stocks of Silver Trevally and King George Whiting in coastal waters near Perth might be expected to be impacted if fishing pressure were to increase by specified amounts. Managers are thus aware that King George Whiting stocks are likely to be more vulnerable than Silver Trevally to increases in fishing pressure in inshore waters.
4. Detailed summaries of the biology, stock assessment and management for 30 of Western Australia’s most important and/or well-known temperate fish species are now accessible to fishery stakeholders in the form of a species guide (published separately as Fisheries Research Report No. 242 by the Department of Fisheries, Western Australia). The guide provides a comprehensive “go to” source of information for anyone who wishes to find key facts and/or literature relating to these species.
Keywords: Silver Trevally, King George Whiting, size-related movement, fishing mortality, uncertainty, model assumptions
PROJECT NUMBER
•
1998-328
PROJECT STATUS:
COMPLETED
ORGANISATION:
Murdoch University
SPECIES
PROJECT NUMBER
•
2009-315.19
PROJECT STATUS:
COMPLETED
ORGANISATION:
Murdoch University
PROJECT NUMBER
•
2000-137
PROJECT STATUS:
COMPLETED
Determination of the biological parameters required for managing the fisheries of four tuskfish species and western yellowfin bream
Data have been collected on the biology of western yellowfin bream and four tuskfish species that are of the type and quality required by managers for developing appropriate plans for conserving the stocks of these five commercial and recreational species. Emphasis was thus placed on determining (1)...
ORGANISATION:
Murdoch University
SPECIES
PROJECT NUMBER
•
1993-082
PROJECT STATUS:
COMPLETED
Biological data for the management of competing commercial and recreational fisheries for King George whiting and black bream
Both the King George whiting and the Black bream are important commercial and recreational finfish species in south-western Australia. The fisheries for Black bream are restricted to estuaries, whereas the King George whiting recreational fisheries is based in both estuaries and protected...
ORGANISATION:
Murdoch University
PROJECT NUMBER
•
2005-063
PROJECT STATUS:
COMPLETED
Development of an ecosystem approach to the monitoring and management of Western Australian fisheries
Diversity and ecosystem-based indicators were calculated for commercial finfish fisheries from 1976 to 2005 for the West Coast, South Coast, Gascoyne, Pilbara and Kimberley bioregions. The ecosystem-based indices, which detect changes in the species composition of the food web within the ecosystem,...
ORGANISATION:
Murdoch University
