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Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems
Long-distance movements of animals are an important driver of population spatial dynamics and determine the extent of overlap with area-focused human activities, such as fishing. Despite global concerns of declining shark populations, a major limitation in assessments of population trends or spatial...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4460898/ https://www.ncbi.nlm.nih.gov/pubmed/26057337 http://dx.doi.org/10.1038/srep11202 |
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author | Lea, James S. E. Wetherbee, Bradley M. Queiroz, Nuno Burnie, Neil Aming, Choy Sousa, Lara L. Mucientes, Gonzalo R. Humphries, Nicolas E. Harvey, Guy M. Sims, David W. Shivji, Mahmood S. |
author_facet | Lea, James S. E. Wetherbee, Bradley M. Queiroz, Nuno Burnie, Neil Aming, Choy Sousa, Lara L. Mucientes, Gonzalo R. Humphries, Nicolas E. Harvey, Guy M. Sims, David W. Shivji, Mahmood S. |
author_sort | Lea, James S. E. |
collection | PubMed |
description | Long-distance movements of animals are an important driver of population spatial dynamics and determine the extent of overlap with area-focused human activities, such as fishing. Despite global concerns of declining shark populations, a major limitation in assessments of population trends or spatial management options is the lack of information on their long-term migratory behaviour. For a large marine predator, the tiger shark Galeocerdo cuvier, we show from individuals satellite-tracked for multiple years (up to 1101 days) that adult males undertake annually repeated, round-trip migrations of over 7,500 km in the northwest Atlantic. Notably, these migrations occurred between the highly disparate ecosystems of Caribbean coral reef regions in winter and high latitude oceanic areas in summer, with strong, repeated philopatry to specific overwintering insular habitat. Partial migration also occurred, with smaller, immature individuals displaying reduced migration propensity. Foraging may be a putative motivation for these oceanic migrations, with summer behaviour showing higher path tortuosity at the oceanic range extremes. The predictable migratory patterns and use of highly divergent ecosystems shown by male tiger sharks appear broadly similar to migrations seen in birds, reptiles and mammals, and highlight opportunities for dynamic spatial management and conservation measures of highly mobile sharks. |
format | Online Article Text |
id | pubmed-4460898 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-44608982015-06-18 Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems Lea, James S. E. Wetherbee, Bradley M. Queiroz, Nuno Burnie, Neil Aming, Choy Sousa, Lara L. Mucientes, Gonzalo R. Humphries, Nicolas E. Harvey, Guy M. Sims, David W. Shivji, Mahmood S. Sci Rep Article Long-distance movements of animals are an important driver of population spatial dynamics and determine the extent of overlap with area-focused human activities, such as fishing. Despite global concerns of declining shark populations, a major limitation in assessments of population trends or spatial management options is the lack of information on their long-term migratory behaviour. For a large marine predator, the tiger shark Galeocerdo cuvier, we show from individuals satellite-tracked for multiple years (up to 1101 days) that adult males undertake annually repeated, round-trip migrations of over 7,500 km in the northwest Atlantic. Notably, these migrations occurred between the highly disparate ecosystems of Caribbean coral reef regions in winter and high latitude oceanic areas in summer, with strong, repeated philopatry to specific overwintering insular habitat. Partial migration also occurred, with smaller, immature individuals displaying reduced migration propensity. Foraging may be a putative motivation for these oceanic migrations, with summer behaviour showing higher path tortuosity at the oceanic range extremes. The predictable migratory patterns and use of highly divergent ecosystems shown by male tiger sharks appear broadly similar to migrations seen in birds, reptiles and mammals, and highlight opportunities for dynamic spatial management and conservation measures of highly mobile sharks. Nature Publishing Group 2015-06-09 /pmc/articles/PMC4460898/ /pubmed/26057337 http://dx.doi.org/10.1038/srep11202 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Lea, James S. E. Wetherbee, Bradley M. Queiroz, Nuno Burnie, Neil Aming, Choy Sousa, Lara L. Mucientes, Gonzalo R. Humphries, Nicolas E. Harvey, Guy M. Sims, David W. Shivji, Mahmood S. Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
title | Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
title_full | Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
title_fullStr | Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
title_full_unstemmed | Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
title_short | Repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
title_sort | repeated, long-distance migrations by a philopatric predator targeting highly contrasting ecosystems |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4460898/ https://www.ncbi.nlm.nih.gov/pubmed/26057337 http://dx.doi.org/10.1038/srep11202 |
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