129 results
Industry
PROJECT NUMBER • 2000-138
PROJECT STATUS:
COMPLETED

Minimising the cost of future stock monitoring, and assessment of the potential for increased yields from the oceanic snapper, Pagrus auratus, stock off Shark Bay

The investment in this project has resulted in a substantially more extensive set of age composition data than would have otherwise been possible. This in turn has underpinned stock assessment modeling that has provided the basis for determining that the commercial fishery for snapper in Shark...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
SPECIES
Environment
PROJECT NUMBER • 1985-057
PROJECT STATUS:
COMPLETED

Studies on the breeding stock of the western rock lobster (Panulurus cygnus), in relation to stock and recruitment

Studies on the breeding stock of the western rock lobster, Panulirus Cygnus George, were conducted to examine the appropriateness of the current measure of the abundance of the breeding stock. Research cruises, commercial monitoring and laboratory studies were undertaken between 1984 and 1988. Data...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 1998-152
PROJECT STATUS:
COMPLETED

Demersal finfish resource assessment survey of the north-west slope of Western Australia

The nature and extent of demersal finfish resources in deep slope waters (>200m) off the northwest coast of Western Australia are poorly understood. Existing fish trawl, trap and line fishing effort is concentrated in shallower waters (<200m), while trawling in deep slope waters...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment

Mortality, growth and movements of the western rock lobster, Panulirus cygnus

Project number: 1995-020
Project Status:
Completed
Budget expenditure: $73,021.00
Principal Investigator: Chris F. Chubb
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 12 Jul 1995 - 30 Jun 1999
Contact:
FRDC

Objectives

1. To prepare a report to industry on the migratory movements of lobsters tagged in recent programmes.
2. To estimate regional growth and mortality rates using existing data from recent programmes to assist in the experimental design of future tagging programmes.
3. To undertake tagging of juveniles in the shallower waters of the Limited Entry Western Rock Lobster Fishery to provide to gain preliminary estimates of exploitation and growth rates and the directions and magnitude of movements.
4. To attempt to recruit and train fishing industry representatives in the procedures of data collection from recaptured tagged lobsters to improve the level of reporting by industry.
5. Preparation of a longer term strategy for providing annual exploitation rates, growth and movements of western rock lobster throughout the Limited Entry Fishery.

Final report

ISBN: 0-7309-1936-6
Author: Chris Chubb
Final Report • 1999-07-01 • 1.53 MB
1995-020-DLD.pdf

Summary

The very high levels of exploitation in the western rock lobster fishery have resulted in the introduction of regional or zone-specific management arrangements in recent years. This is a permanent departure from an holistic approach to the fishery’s regulation.  A detailed knowledge of regional variations in the growth, movement and mortality of the lobsters is required to support the models assessing regional management options.

A need was identified to supplement the Fisheries Western Australia, Research Division’s resources to enable the full analysis of existing tagging data in terms of growth, movements and mortality; to undertake tagging in shallow water to assist in addressing specific management issues; to improve the level of tag recapture information from industry; and to develop a strategic approach to tagging that would assist in providing appropriate advice to management and industry, given the regional approach to the fishery’s regulation.

Tagging of western rock lobsters, using “spaghetti” tags in a dorsal or ventral (or both) position, has been undertaken opportunistically for many years but this report is concerned with data collected from 1988 to 1996.  Most recaptures of tagged lobsters were made during the first commercial season after release (approximately 75%), however, recaptures did occur for up to five seasons post-release. 

Keywords: Western rock lobster, Panulirus cygnus, tagging, migration, growth, mortality.

Environment
PROJECT NUMBER • 2014-004
PROJECT STATUS:
COMPLETED

Mitigation measures to reduce entanglements of migrating whales with commercial fishing gear

This project provided a robust assessment that gear modifications introduced into the WCRLMF and octopus fisheries have reduced the number of reported entanglements. The management arrangements around the implementation of these modifications are appropriate in light on the new spatial and temporal...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 1993-091
PROJECT STATUS:
COMPLETED

Fishery independent study of the spawning stock of the western rock lobster

The fishery for western lobster (Panulirus cygnus) has supported an annual catch of about 10 500 tonnes per annum over the last twenty years and is worth between $200-300 million per annum. The fishery has been experiencing increasing exploitation rates over time and estimates in the...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
Environment
PROJECT NUMBER • 2003-026
PROJECT STATUS:
COMPLETED

Environmentally sustainable development of barramundi cage aquaculture

A preliminary sensory evaluation study was conducted to confirm the presence of a taint issue. Prior to this the issue was reliant on purchaser feedback and was not verified independently. To examine the issue of flavour taint a series of barramundi samples were collected from Lake Argyle (purged...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
SPECIES
Industry
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