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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...

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Autores principales: 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.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
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.
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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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