Environmentally driven sexual segregation in a marine top predator

Abstract Sexual segregation in foraging occurs in many animal species, resulting in the partitioning of resources and reduction of competition between males and females, yet the patterns and drivers of such segregation are still poorly understood. We studied the foraging movements (GPS-tracking), ha...

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Autores principales:	Vitor H. Paiva, Justin Pereira, Filipe R. Ceia, Jaime A. Ramos
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6cdcee47c5c44e07a001f307249262db
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spelling	oai:doaj.org-article:6cdcee47c5c44e07a001f307249262db2021-12-02T11:40:22ZEnvironmentally driven sexual segregation in a marine top predator10.1038/s41598-017-02854-22045-2322https://doaj.org/article/6cdcee47c5c44e07a001f307249262db2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02854-2https://doaj.org/toc/2045-2322Abstract Sexual segregation in foraging occurs in many animal species, resulting in the partitioning of resources and reduction of competition between males and females, yet the patterns and drivers of such segregation are still poorly understood. We studied the foraging movements (GPS-tracking), habitat use (habitat modelling) and trophic ecology (stable isotope analysis) of female and male Cory’s shearwaters Calonectris borealis during the mid chick-rearing period of six consecutive breeding seasons (2010–2015). We found a clear sexual segregation in foraging in years of greater environmental stochasticity, likely years of lower food availability. When food became scarce, females undertook much longer foraging trips, exploited more homogeneous water masses, had a larger isotopic niche, fed on lower trophic level prey and exhibited a lower body condition, when compared to males. Sexual competition for trophic resources may be stronger when environmental conditions are poor. A greater foraging success of one sex may result in differential body condition of pair mates when enduring parental effort, and ultimately, in an increased probability of breeding failure.Vitor H. PaivaJustin PereiraFilipe R. CeiaJaime A. RamosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vitor H. Paiva Justin Pereira Filipe R. Ceia Jaime A. Ramos Environmentally driven sexual segregation in a marine top predator
description	Abstract Sexual segregation in foraging occurs in many animal species, resulting in the partitioning of resources and reduction of competition between males and females, yet the patterns and drivers of such segregation are still poorly understood. We studied the foraging movements (GPS-tracking), habitat use (habitat modelling) and trophic ecology (stable isotope analysis) of female and male Cory’s shearwaters Calonectris borealis during the mid chick-rearing period of six consecutive breeding seasons (2010–2015). We found a clear sexual segregation in foraging in years of greater environmental stochasticity, likely years of lower food availability. When food became scarce, females undertook much longer foraging trips, exploited more homogeneous water masses, had a larger isotopic niche, fed on lower trophic level prey and exhibited a lower body condition, when compared to males. Sexual competition for trophic resources may be stronger when environmental conditions are poor. A greater foraging success of one sex may result in differential body condition of pair mates when enduring parental effort, and ultimately, in an increased probability of breeding failure.
format	article
author	Vitor H. Paiva Justin Pereira Filipe R. Ceia Jaime A. Ramos
author_facet	Vitor H. Paiva Justin Pereira Filipe R. Ceia Jaime A. Ramos
author_sort	Vitor H. Paiva
title	Environmentally driven sexual segregation in a marine top predator
title_short	Environmentally driven sexual segregation in a marine top predator
title_full	Environmentally driven sexual segregation in a marine top predator
title_fullStr	Environmentally driven sexual segregation in a marine top predator
title_full_unstemmed	Environmentally driven sexual segregation in a marine top predator
title_sort	environmentally driven sexual segregation in a marine top predator
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6cdcee47c5c44e07a001f307249262db
work_keys_str_mv	AT vitorhpaiva environmentallydrivensexualsegregationinamarinetoppredator AT justinpereira environmentallydrivensexualsegregationinamarinetoppredator AT filiperceia environmentallydrivensexualsegregationinamarinetoppredator AT jaimearamos environmentallydrivensexualsegregationinamarinetoppredator
_version_	1718395648457310208

Environmentally driven sexual segregation in a marine top predator

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