Title

Economics of the Queensland mud crab fishery

Date of this Version

12-7-2010

Document Type

Research Report

Publication Details

Citation only

Hundloe, T. (2010). Economics of the Queensland mud crab fishery. In I.W.Brown (ed.) Final Report- FRDC 2009/031- Taking female mud crabs (Scylla serrata): Assessment of risks and benefits. Brisbane, Australia: Fisheries Research and Development Coporation and Queensland Govenment. ISBN: 9780734504197

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© Copyright Fisheries Research and Development Corporation and the State of Queensland, Department of Employment, Economic Development and Innovation, 2010

ISBN

9780734504197

Abstract

A series of analyses of catch-effort data from compulsory commercial logbooks and from the Department’s Long-Term Monitoring Programme (LTMP) were conducted after the Workshop. Although not part of the Project plan, these were initiated as a result of questions arising from the Workshop participants about the reliability of the data used in the simulation modelling. Exploration of the logbook data and results of the analyses suggest that biases in the data (from a variety of sources, but principally the widespread use of more than the permitted number of pots) may be giving an over-optimistic view of the status of the East Coast mud crab resource. In particular, if a significant proportion fishers are reporting that catches are greater than they actually are, this will result in an overestimate of the productivity of the stock, and an underestimate of the impact of removing the SSHB. Declining stock density trends in the fishery-independent LTMP data series over the past decade are consistent with the commercial data trends, although the time series is too short to rule out the possibility that this could be part of a decadal-scale environmental cycle. Reliable commercial and recreational crab fishers also report that legal-sized mud crabs are becoming more and more difficult to catch.

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