2 results
Environment
PROJECT NUMBER • 2000-139
PROJECT STATUS:
COMPLETED

Quantification of changes in recreational catch and effort on inner Shark Bay snapper species following implementation of responsive management measures

A 12-month creel survey of recreational boat-based fishing in Shark Bay, Western Australia was conducted between May 2001 and April 2002 to estimate the catch of pink snapper. During the survey 431 boat crews were interviewed at public boat ramps of which 414 had been fishing. The information...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
SPECIES

The age, growth, reproductive biology and stock assessment of grass emperor, Lethrinus laticaudis in Shark Bay, WA

Project number: 1999-152
Project Status:
Completed
Budget expenditure: $309,307.00
Principal Investigator: Suzanne G. Ayvazian
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 1 Aug 1999 - 17 May 2005
:

Need

Black snapper stocks in the inner gulfs of Shark Bay are under increasing pressure by the recreational fishing sector. This is a result of both the increasing number of recreational anglers fishing in the Shark Bay area and the reduction in the stock size of pink snapper. Current management for the recreational sector consists of a bag limit of 8 fish and size limit of 28 cm. However, there are no validated or reliable biological data on the age, growth and reproductive biology on this species in order to develop stock assessment models and evaluate current management regulations.

Objectives

1. Examine stock delineation using stable isotope analysis.
2. Determine the age structure of black snapper .
3. Determine the growth rate of black snapper.
4. Determine the reproductive biology of the black snapper.
5. Develop a stock assessment model for black snapper from the inner gulfs of Shark Bay.

Final report

ISBN: 1-877098-51-5
Author: Suzanne Ayvazian