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Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management

Off the Ningaloo coast of North West Western Australia, Spangled Emperor Lethrinus nebulosus are among the most highly targeted recreational fish species. The Ningaloo Reef Marine Park comprises an area of 4,566 km(2) of which 34% is protected from fishing by 18 no-take sanctuary zones ranging in si...

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Autores principales: Pillans, Richard D., Bearham, Douglas, Boomer, Andrew, Downie, Ryan, Patterson, Toby A., Thomson, Damian P., Babcock, Russel C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4152176/
https://www.ncbi.nlm.nih.gov/pubmed/25181537
http://dx.doi.org/10.1371/journal.pone.0105507
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author Pillans, Richard D.
Bearham, Douglas
Boomer, Andrew
Downie, Ryan
Patterson, Toby A.
Thomson, Damian P.
Babcock, Russel C.
author_facet Pillans, Richard D.
Bearham, Douglas
Boomer, Andrew
Downie, Ryan
Patterson, Toby A.
Thomson, Damian P.
Babcock, Russel C.
author_sort Pillans, Richard D.
collection PubMed
description Off the Ningaloo coast of North West Western Australia, Spangled Emperor Lethrinus nebulosus are among the most highly targeted recreational fish species. The Ningaloo Reef Marine Park comprises an area of 4,566 km(2) of which 34% is protected from fishing by 18 no-take sanctuary zones ranging in size from 0.08–44.8 km(2). To better understand Spangled Emperor movements and the adequacy of sanctuary zones within the Ningaloo Reef Marine Park for this species, 84 Spangled Emperor of a broad spectrum of maturity and sex were tagged using internal acoustic tags in a range of lagoon and reef slope habitats both inside and adjacent to the Mangrove Bay Sanctuary zone. Kernel Utilisation Distribution (KUD) was calculated for 39 resident individuals that were detected for more than 30 days. There was no relationship with fish size and movement or site fidelity. Average home range (95% KUD) for residents was 8.5±0.5 km(2) compared to average sanctuary zone size of 30 km(2). Calculated home range was stable over time resulting in resident animals tagged inside the sanctuary zone spending ∼80% of time within the sanctuary boundaries. The number of fish remaining within the array of receivers declined steadily over time and after one year more than 60% of tagged fish had moved outside the sanctuary zone and also beyond the 28 km(2) array of receivers. Long term monitoring identified the importance of shifting home range and was essential for understanding overall residency within protected areas and also for identifying spawning related movements. This study indicates that despite exhibiting stable and small home ranges over periods of one to two years, more than half the population of spangled emperor move at scales greater than average sanctuary size within the Ningaloo Reef Marine Park.
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spelling pubmed-41521762014-09-05 Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management Pillans, Richard D. Bearham, Douglas Boomer, Andrew Downie, Ryan Patterson, Toby A. Thomson, Damian P. Babcock, Russel C. PLoS One Research Article Off the Ningaloo coast of North West Western Australia, Spangled Emperor Lethrinus nebulosus are among the most highly targeted recreational fish species. The Ningaloo Reef Marine Park comprises an area of 4,566 km(2) of which 34% is protected from fishing by 18 no-take sanctuary zones ranging in size from 0.08–44.8 km(2). To better understand Spangled Emperor movements and the adequacy of sanctuary zones within the Ningaloo Reef Marine Park for this species, 84 Spangled Emperor of a broad spectrum of maturity and sex were tagged using internal acoustic tags in a range of lagoon and reef slope habitats both inside and adjacent to the Mangrove Bay Sanctuary zone. Kernel Utilisation Distribution (KUD) was calculated for 39 resident individuals that were detected for more than 30 days. There was no relationship with fish size and movement or site fidelity. Average home range (95% KUD) for residents was 8.5±0.5 km(2) compared to average sanctuary zone size of 30 km(2). Calculated home range was stable over time resulting in resident animals tagged inside the sanctuary zone spending ∼80% of time within the sanctuary boundaries. The number of fish remaining within the array of receivers declined steadily over time and after one year more than 60% of tagged fish had moved outside the sanctuary zone and also beyond the 28 km(2) array of receivers. Long term monitoring identified the importance of shifting home range and was essential for understanding overall residency within protected areas and also for identifying spawning related movements. This study indicates that despite exhibiting stable and small home ranges over periods of one to two years, more than half the population of spangled emperor move at scales greater than average sanctuary size within the Ningaloo Reef Marine Park. Public Library of Science 2014-09-02 /pmc/articles/PMC4152176/ /pubmed/25181537 http://dx.doi.org/10.1371/journal.pone.0105507 Text en © 2014 Pillans 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
Pillans, Richard D.
Bearham, Douglas
Boomer, Andrew
Downie, Ryan
Patterson, Toby A.
Thomson, Damian P.
Babcock, Russel C.
Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management
title Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management
title_full Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management
title_fullStr Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management
title_full_unstemmed Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management
title_short Multi Year Observations Reveal Variability in Residence of a Tropical Demersal Fish, Lethrinus nebulosus: Implications for Spatial Management
title_sort multi year observations reveal variability in residence of a tropical demersal fish, lethrinus nebulosus: implications for spatial management
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4152176/
https://www.ncbi.nlm.nih.gov/pubmed/25181537
http://dx.doi.org/10.1371/journal.pone.0105507
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