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Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries
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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4619570/ https://www.ncbi.nlm.nih.gov/pubmed/26489035 http://dx.doi.org/10.1371/journal.pone.0139816 |
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author | Briceño, Felipe Linnane, Adrian Joseph Quiroz, Juan Carlos Gardner, Caleb Pecl, Gretta Tatyana |
author_facet | Briceño, Felipe Linnane, Adrian Joseph Quiroz, Juan Carlos Gardner, Caleb Pecl, Gretta Tatyana |
author_sort | Briceño, Felipe |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-4619570 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-46195702015-10-29 Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries Briceño, Felipe Linnane, Adrian Joseph Quiroz, Juan Carlos Gardner, Caleb Pecl, Gretta Tatyana PLoS One Research Article 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. Public Library of Science 2015-10-21 /pmc/articles/PMC4619570/ /pubmed/26489035 http://dx.doi.org/10.1371/journal.pone.0139816 Text en © 2015 Briceño et al http://creativecommons.org/licenses/by/4.0/ 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 properly credited. |
spellingShingle | Research Article Briceño, Felipe Linnane, Adrian Joseph Quiroz, Juan Carlos Gardner, Caleb Pecl, Gretta Tatyana Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries |
title | Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries |
title_full | Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries |
title_fullStr | Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries |
title_full_unstemmed | Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries |
title_short | Predation Risk within Fishing Gear and Implications for South Australian Rock Lobster Fisheries |
title_sort | predation risk within fishing gear and implications for south australian rock lobster fisheries |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4619570/ https://www.ncbi.nlm.nih.gov/pubmed/26489035 http://dx.doi.org/10.1371/journal.pone.0139816 |
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