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Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird

Climate influences the dynamics of natural populations by direct effects over habitat quality but also modulating the phenotypic responses of organisms’ life-history traits. These responses may be different in males and females, particularly in dimorphic species, due to sex-specific requirements or...

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Detalles Bibliográficos
Autores principales: Barros, Álvaro, Álvarez, David, Velando, Alberto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3738640/
https://www.ncbi.nlm.nih.gov/pubmed/23951144
http://dx.doi.org/10.1371/journal.pone.0071358
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author Barros, Álvaro
Álvarez, David
Velando, Alberto
author_facet Barros, Álvaro
Álvarez, David
Velando, Alberto
author_sort Barros, Álvaro
collection PubMed
description Climate influences the dynamics of natural populations by direct effects over habitat quality but also modulating the phenotypic responses of organisms’ life-history traits. These responses may be different in males and females, particularly in dimorphic species, due to sex-specific requirements or constraints. Here, in a coastal seabird, the European shag (Phalacrocorax aristotelis), we studied the influence of climate (North Atlantic Oscillation, NAO; Sea Surface Temperature, SST) on two sex-related population parameters: fledgling sex ratio and sex-specific dispersal. We found that fledgling sex ratio was female skewed in NAO-positive years and male skewed in NAO-negative years. Accordingly, females dispersed a longer distance in NAO-positive years when females were overproduced, and on the contrary, males dispersed more in NAO-negative years. Overall, our findings provide rare evidence on vertebrates with genetic sex determination that climate conditions may govern population dynamics by affecting sex-specific density and dispersal.
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spelling pubmed-37386402013-08-15 Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird Barros, Álvaro Álvarez, David Velando, Alberto PLoS One Research Article Climate influences the dynamics of natural populations by direct effects over habitat quality but also modulating the phenotypic responses of organisms’ life-history traits. These responses may be different in males and females, particularly in dimorphic species, due to sex-specific requirements or constraints. Here, in a coastal seabird, the European shag (Phalacrocorax aristotelis), we studied the influence of climate (North Atlantic Oscillation, NAO; Sea Surface Temperature, SST) on two sex-related population parameters: fledgling sex ratio and sex-specific dispersal. We found that fledgling sex ratio was female skewed in NAO-positive years and male skewed in NAO-negative years. Accordingly, females dispersed a longer distance in NAO-positive years when females were overproduced, and on the contrary, males dispersed more in NAO-negative years. Overall, our findings provide rare evidence on vertebrates with genetic sex determination that climate conditions may govern population dynamics by affecting sex-specific density and dispersal. Public Library of Science 2013-08-08 /pmc/articles/PMC3738640/ /pubmed/23951144 http://dx.doi.org/10.1371/journal.pone.0071358 Text en © 2013 Barros 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
Barros, Álvaro
Álvarez, David
Velando, Alberto
Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird
title Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird
title_full Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird
title_fullStr Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird
title_full_unstemmed Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird
title_short Climate Influences Fledgling Sex Ratio and Sex-Specific Dispersal in a Seabird
title_sort climate influences fledgling sex ratio and sex-specific dispersal in a seabird
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3738640/
https://www.ncbi.nlm.nih.gov/pubmed/23951144
http://dx.doi.org/10.1371/journal.pone.0071358
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