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Predation risk within fishing gear and implications for South Australian rock lobster fisheries

Citation

Briceno, F and Linnane, AJ and Quiroz, JC and Gardner, C and Pecl, GT, Predation risk within fishing gear and implications for South Australian rock lobster fisheries, PLoS ONE, 10, (10) Article e0139816. ISSN 1932-6203 (2015) [Refereed Article]


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Copyright Statement

Copyright 2015 Briceņo et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1371/journal.pone.0139816

Abstract

Depredation of southern rock lobster (Jasus edwardsii) within fishing gear by the Maori octopus (Pinnoctopus cordiformis) has economic and ecological impacts on valuable fisheries in South Australia. In addition, depredation rates can be highly variable resulting in uncertainties for the fishery. We examined how in-pot lobster predation was influenced by factors such as lobster size and sex, season, fishing zone, and catch rate. Using mixed modelling techniques, we found that in-pot predation risk increased with lobster size and was higher for male lobsters. In addition, the effect of catch rate of lobsters on predation risk by octopus differed among fishing zones. There was both a seasonal and a spatial component to octopus predation, with an increased risk within discrete fishing grounds in South Australia at certain times of the year. Information about predation within lobster gear can assist fishery management decision-making, potentially leading to significant reduction in economic losses to the fishery.

Item Details

Item Type:Refereed Article
Keywords:octopus, depredation, rock lobster, Jasus edwardsii
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 Rock Lobster
Author:Briceno, F (Mr Filipe Briceno)
Author:Quiroz, JC (Mr Juan Quiroz Espinosa)
Author:Gardner, C (Professor Caleb Gardner)
Author:Pecl, GT (Professor Gretta Pecl)
ID Code:103673
Year Published:2015
Web of Science® Times Cited:2
Deposited By:IMAS Research and Education Centre
Deposited On:2015-10-25
Last Modified:2017-11-04
Downloads:146 View Download Statistics

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