Briceno et al 2015 Predation risk_PLOSone.pdf (2.17 MB)
Predation risk within fishing gear and implications for South Australian rock lobster fisheries
journal contribution
posted on 2023-05-18, 13:36 authored by Briceno, F, Linnane, AJ, Quiroz, JC, Caleb GardnerCaleb Gardner, Gretta PeclGretta PeclDepredation 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.
Funding
Dept of Climate Change, Energy & Efficiency and FRDC
History
Publication title
PLoS ONEVolume
10Issue
10Article number
e0139816Number
e0139816Pagination
1-15ISSN
1932-6203Department/School
Institute for Marine and Antarctic StudiesPublisher
Public Library of SciencePlace of publication
United StatesRights statement
Copyright 2015 Briceño et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/Repository Status
- Open