English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/143106
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Sex- and age-dependent patterns of survival and breeding success in a long-lived endangered avian scavenger

AuthorsSanz-Aguilar, Ana ; Cortés-Avizanda, Ainara ; Serrano, David ; Blanco, Guillermo ; Ceballos, Olga ; Grande, Juan Manuel ; Tella, José Luis ; Donázar, José A.
Issue Date2017
PublisherNature Publishing Group
CitationScientific Reports, 7:40204 (2017)
AbstractIn long-lived species, the age-, stage- and/or sex-dependent patterns of survival and reproduction determine the evolution of life history strategies, the shape of the reproductive value, and ultimately population dynamics. We evaluate the combined effects of age and sex in recruitment, breeder survival and breeding success of the globally endangered Egyptian vulture (Neophron percnopterus), using 31- years of exhaustive data on marked individuals in Spain. Mean age of first reproduction was 7-yrs for both sexes, but females showed an earlier median and a larger variance than males. We found an agerelated improvement in breeding success at the population level responding to the selective appearance and disappearance of phenotypes of different quality but unrelated to within-individual aging effects. Old males (≥8 yrs) showed a higher survival than both young males (≤7 yrs) and females, these later in turn not showing aging effects. Evolutionary trade-offs between age of recruitment and fitness (probably related to costs of territory acquisition and defense) as well as human-related mortality may explain these findings. Sex- and age-related differences in foraging strategies and susceptibility to toxics could be behind the relatively low survival of females and young males, adding a new concern for the conservation of this endangered species
Publisher version (URL)http://dx.doi.org/10.1038/srep40204
URIhttp://hdl.handle.net/10261/143106
DOI10.1038/srep40204
Appears in Collections:(EBD) Artículos
(MNCN) Artículos
Files in This Item:
File Description SizeFormat 
srep40204.pdf785,31 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.