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Food predictability and social status drive individual resource specializations in a territorial vulture

Despite increasing work detailing the presence of foraging specializations across a range of taxa, limited attention so far has been given to the role of spatiotemporal variation in food predictability in shaping individual resource selection. Here, we studied the exploitation of human-provided carr...

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Autores principales: van Overveld, Thijs, García-Alfonso, Marina, Dingemanse, Niels J., Bouten, Willem, Gangoso, Laura, de la Riva, Manuel, Serrano, David, Donázar, José A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6181911/
https://www.ncbi.nlm.nih.gov/pubmed/30310140
http://dx.doi.org/10.1038/s41598-018-33564-y
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author van Overveld, Thijs
García-Alfonso, Marina
Dingemanse, Niels J.
Bouten, Willem
Gangoso, Laura
de la Riva, Manuel
Serrano, David
Donázar, José A.
author_facet van Overveld, Thijs
García-Alfonso, Marina
Dingemanse, Niels J.
Bouten, Willem
Gangoso, Laura
de la Riva, Manuel
Serrano, David
Donázar, José A.
author_sort van Overveld, Thijs
collection PubMed
description Despite increasing work detailing the presence of foraging specializations across a range of taxa, limited attention so far has been given to the role of spatiotemporal variation in food predictability in shaping individual resource selection. Here, we studied the exploitation of human-provided carrion resources differing in predictability by Canarian Egyptian vultures (Neophron percnopterus majorensis). We focussed specifically on the role of individual characteristics and spatial constraints in shaping patterns of resource use. Using high-resolution GPS data obtained from 45 vultures tracked for 1 year, we show that individual vultures were repeatable in both their monthly use of predictable and semi-predicable resources (feeding station vs. farms) and monthly levels of mobility (home range size and flight activity). However, individual foraging activities were simultaneously characterized by a high degree of (temporal) plasticity in the use of the feeding station in specific months. Individual rank within dominance hierarchy revealed sex-dependent effects of social status on resource preference in breeding adults, illustrating the potential complex social mechanisms underpinning status-dependent resource use patterns. Our results show that predictable food at feeding stations may lead to broad-scale patterns of resource partitioning and affect both the foraging and social dynamics within local vulture populations.
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spelling pubmed-61819112018-10-15 Food predictability and social status drive individual resource specializations in a territorial vulture van Overveld, Thijs García-Alfonso, Marina Dingemanse, Niels J. Bouten, Willem Gangoso, Laura de la Riva, Manuel Serrano, David Donázar, José A. Sci Rep Article Despite increasing work detailing the presence of foraging specializations across a range of taxa, limited attention so far has been given to the role of spatiotemporal variation in food predictability in shaping individual resource selection. Here, we studied the exploitation of human-provided carrion resources differing in predictability by Canarian Egyptian vultures (Neophron percnopterus majorensis). We focussed specifically on the role of individual characteristics and spatial constraints in shaping patterns of resource use. Using high-resolution GPS data obtained from 45 vultures tracked for 1 year, we show that individual vultures were repeatable in both their monthly use of predictable and semi-predicable resources (feeding station vs. farms) and monthly levels of mobility (home range size and flight activity). However, individual foraging activities were simultaneously characterized by a high degree of (temporal) plasticity in the use of the feeding station in specific months. Individual rank within dominance hierarchy revealed sex-dependent effects of social status on resource preference in breeding adults, illustrating the potential complex social mechanisms underpinning status-dependent resource use patterns. Our results show that predictable food at feeding stations may lead to broad-scale patterns of resource partitioning and affect both the foraging and social dynamics within local vulture populations. Nature Publishing Group UK 2018-10-11 /pmc/articles/PMC6181911/ /pubmed/30310140 http://dx.doi.org/10.1038/s41598-018-33564-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
van Overveld, Thijs
García-Alfonso, Marina
Dingemanse, Niels J.
Bouten, Willem
Gangoso, Laura
de la Riva, Manuel
Serrano, David
Donázar, José A.
Food predictability and social status drive individual resource specializations in a territorial vulture
title Food predictability and social status drive individual resource specializations in a territorial vulture
title_full Food predictability and social status drive individual resource specializations in a territorial vulture
title_fullStr Food predictability and social status drive individual resource specializations in a territorial vulture
title_full_unstemmed Food predictability and social status drive individual resource specializations in a territorial vulture
title_short Food predictability and social status drive individual resource specializations in a territorial vulture
title_sort food predictability and social status drive individual resource specializations in a territorial vulture
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6181911/
https://www.ncbi.nlm.nih.gov/pubmed/30310140
http://dx.doi.org/10.1038/s41598-018-33564-y
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