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Type: Journal article
Title: Predation risk within fishing gear and implications for South Australian rock lobster fisheries
Author: Briceño, F.
Linnane, A.
Quiroz, J.
Gardner, C.
Pecl, G.
Citation: PLoS ONE, 2015; 10(10):e0139816-1-e0139816-15
Publisher: Public Library Science
Issue Date: 2015
ISSN: 1932-6203
Statement of
Felipe Briceño, Adrian Joseph Linnane, Juan Carlos Quiroz, Caleb Gardner, Gretta Tatyana Pecl
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.
Keywords: Predatory Behavior
Rights: © 2015 Briceño et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
RMID: 1000010903
DOI: 10.1371/journal.pone.0139816
Appears in Collections:Environment Institute publications

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