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Bioeconomic modelling and risk assessment of tiger prawn (Penaeus esculentus) stock enhancement in Exmouth Gulf, Australia

Citation

Ye, Y and Loneragan, N and Die, D and Watson, RA and Harch, B, Bioeconomic modelling and risk assessment of tiger prawn (Penaeus esculentus) stock enhancement in Exmouth Gulf, Australia, Fisheries Research, 73, (1-2) pp. 231-249. ISSN 0165-7836 (2005) [Refereed Article]

DOI: doi:10.1016/j.fishres.2004.12.004

Abstract

A bioeconomic model was developed to evaluate the potential performance of brown tiger prawn stock enhancement in Exmouth Gulf, Australia. This paper presents the framework for the bioeconomic model and risk assessment for all components of a stock enhancement operation, i.e. hatchery, grow-out, releasing, population dynamics, fishery, and monitoring, for a commercial scale enhancement of about 100 metric tonnes, a 25% increase in average annual catch in Exmouth Gulf. The model incorporates uncertainty in estimates of parameters by using a distribution for the parameter over a certain range, based on experiments, published data, or similar studies. Monte Carlo simulation was then used to quantify the effects of these uncertainties on the model-output and on the economic potential of a particular production target. The model incorporates density-dependent effects in the nursery grounds of brown tiger prawns. The results predict that a release of 21 million 1 g prawns would produce an estimated enhanced prawn catch of about 100 t. This scale of enhancement has a 66.5% chance of making a profit. The largest contributor to the overall uncertainty of the enhanced prawn catch was the post-release mortality, followed by the density-dependent mortality caused by released prawns. These two mortality rates are most difficult to estimate in practice and are much under-researched in stock enhancement. © 2004 Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Keywords:Bioeconomic modelling; Penaeus esculentus; Risk assessment; Stock enhancement; Tiger prawn; stock enhancement; Australasia; Australia; Eastern Hemisphere; World; Decapoda (Crustacea); Panthera tigris; Penaeus esculentus; Penaeus monodon
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Wild Caught Fin Fish (excl. Tuna)
Author:Watson, RA (Professor Reginald Watson)
ID Code:84056
Year Published:2005
Web of Science® Times Cited:22
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2013-04-16
Last Modified:2013-04-16
Downloads:0

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