Insularity determines nestling sex ratio variation in Egyptian vulture populations

Autores
Gómez López, Guillermo; Sanz Aguilar, Ana; Carrete, Martina; Arrondo, Eneko; Benítez, José Ramón; Ceballos, Olga; Cortés Avizanda, Ainara; de Pablo, Félix; Donázar, José Antonio; Frías, Óscar; Gangoso, Laura; García Alfonso, Marina; González, José Luis; Grande, Juan Manuel; Serrano, David; Tella, José Luis; Blanco, Guillermo
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Variation in offspring sex ratio, particularly in birds, has been frequently studied over the last century, although seldom using long-term monitoring data. In raptors, the cost of raising males and females is not equal, and several variables have been foundto have significant effects on sex ratio, including food availability, parental age, and hatching order. Sex ratio differences between island populations and their mainland counterparts have been poorly documented, despite broad scientific literature on the island syndrome reporting substantial differences in population demography and ecology. Here, we assessed individual and environmental factors potentially affecting the secondary sex ratio of the long- lived Egyptian vulture Neophron percnopterus. We used data collected from Spanish mainland and island populations over a ca. 30- year period (1995–2021) to assess the effects of insularity, parental age, breeding phenol-ogy, brood size, hatching order, type of breeding unit (pairs vs. trios), and spatial andtemporal variability on offspring sex ratio. No sex bias was found at the population level, but two opposite trends were observed between mainland and island popula-tions consistent with the island syndrome. Offspring sex ratio was nonsignificantly female-biased in mainland Spain (0.47,n= 1112) but significantly male- biased in the Canary Islands (0.55, n= 499), where a male- biased mortality among immatures could be compensating for offspring biases and maintaining a paired adult sex ratio. Temporal and spatial variation in food availability might also have some influence on sex ratio, although the difficulties in quantifying them preclude us from determin-ing the magnitude of such influence. This study shows that insularity influences the offspring sex ratio of the Egyptian vulture through several processes that can affect island and mainland populations differentially. Our research contributes to improving our understanding of sex allocation theory by investigating whether sex ratio devia-tions from parity are possible as a response to changing environments comprised by multiple and complexly interrelated factors.
Fil: Gómez López, Guillermo. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
Fil: Sanz Aguilar, Ana. Institut D´investigacion Sanitaria Llles Balears (idlsba); España
Fil: Carrete, Martina. Universidad Pablo de Olavide.; España
Fil: Arrondo, Eneko. Universidad de Granada; España
Fil: Benítez, José Ramón. Junta de Andalucia; España
Fil: Ceballos, Olga. No especifíca;
Fil: Cortés Avizanda, Ainara. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: de Pablo, Félix. No especifíca;
Fil: Donázar, José Antonio. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Frías, Óscar. Universidad Pablo de Olavide.; España
Fil: Gangoso, Laura. Universidad Complutense de Madrid; España
Fil: García Alfonso, Marina. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: González, José Luis. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
Fil: Grande, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
Fil: Serrano, David. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Tella, José Luis. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Blanco, Guillermo. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
Materia
demography
islands
Neophron percnopterus
nestling sex
offspring sex ratio
sex sequence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/240750
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/240750
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Insularity determines nestling sex ratio variation in Egyptian vulture populationsGómez López, GuillermoSanz Aguilar, AnaCarrete, MartinaArrondo, EnekoBenítez, José RamónCeballos, OlgaCortés Avizanda, Ainarade Pablo, FélixDonázar, José AntonioFrías, ÓscarGangoso, LauraGarcía Alfonso, MarinaGonzález, José LuisGrande, Juan ManuelSerrano, DavidTella, José LuisBlanco, GuillermodemographyislandsNeophron percnopterusnestling sexoffspring sex ratiosex sequencehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Variation in offspring sex ratio, particularly in birds, has been frequently studied over the last century, although seldom using long-term monitoring data. In raptors, the cost of raising males and females is not equal, and several variables have been foundto have significant effects on sex ratio, including food availability, parental age, and hatching order. Sex ratio differences between island populations and their mainland counterparts have been poorly documented, despite broad scientific literature on the island syndrome reporting substantial differences in population demography and ecology. Here, we assessed individual and environmental factors potentially affecting the secondary sex ratio of the long- lived Egyptian vulture Neophron percnopterus. We used data collected from Spanish mainland and island populations over a ca. 30- year period (1995–2021) to assess the effects of insularity, parental age, breeding phenol-ogy, brood size, hatching order, type of breeding unit (pairs vs. trios), and spatial andtemporal variability on offspring sex ratio. No sex bias was found at the population level, but two opposite trends were observed between mainland and island popula-tions consistent with the island syndrome. Offspring sex ratio was nonsignificantly female-biased in mainland Spain (0.47,n= 1112) but significantly male- biased in the Canary Islands (0.55, n= 499), where a male- biased mortality among immatures could be compensating for offspring biases and maintaining a paired adult sex ratio. Temporal and spatial variation in food availability might also have some influence on sex ratio, although the difficulties in quantifying them preclude us from determin-ing the magnitude of such influence. This study shows that insularity influences the offspring sex ratio of the Egyptian vulture through several processes that can affect island and mainland populations differentially. Our research contributes to improving our understanding of sex allocation theory by investigating whether sex ratio devia-tions from parity are possible as a response to changing environments comprised by multiple and complexly interrelated factors.Fil: Gómez López, Guillermo. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; EspañaFil: Sanz Aguilar, Ana. Institut D´investigacion Sanitaria Llles Balears (idlsba); EspañaFil: Carrete, Martina. Universidad Pablo de Olavide.; EspañaFil: Arrondo, Eneko. Universidad de Granada; EspañaFil: Benítez, José Ramón. Junta de Andalucia; EspañaFil: Ceballos, Olga. No especifíca;Fil: Cortés Avizanda, Ainara. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: de Pablo, Félix. No especifíca;Fil: Donázar, José Antonio. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: Frías, Óscar. Universidad Pablo de Olavide.; EspañaFil: Gangoso, Laura. Universidad Complutense de Madrid; EspañaFil: García Alfonso, Marina. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: González, José Luis. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; EspañaFil: Grande, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; ArgentinaFil: Serrano, David. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: Tella, José Luis. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: Blanco, Guillermo. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; EspañaWiley2023-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/240750Gómez López, Guillermo; Sanz Aguilar, Ana; Carrete, Martina; Arrondo, Eneko; Benítez, José Ramón; et al.; Insularity determines nestling sex ratio variation in Egyptian vulture populations; Wiley; Ecology and Evolution; 13; 8; 7-2023; 1-182045-77582045-7758CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/ece3.10371info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.10371info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:04Zoai:ri.conicet.gov.ar:11336/240750instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:53:04.847CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Insularity determines nestling sex ratio variation in Egyptian vulture populations
title Insularity determines nestling sex ratio variation in Egyptian vulture populations
spellingShingle Insularity determines nestling sex ratio variation in Egyptian vulture populations
Gómez López, Guillermo
demography
islands
Neophron percnopterus
nestling sex
offspring sex ratio
sex sequence
title_short Insularity determines nestling sex ratio variation in Egyptian vulture populations
title_full Insularity determines nestling sex ratio variation in Egyptian vulture populations
title_fullStr Insularity determines nestling sex ratio variation in Egyptian vulture populations
title_full_unstemmed Insularity determines nestling sex ratio variation in Egyptian vulture populations
title_sort Insularity determines nestling sex ratio variation in Egyptian vulture populations
dc.creator.none.fl_str_mv Gómez López, Guillermo
Sanz Aguilar, Ana
Carrete, Martina
Arrondo, Eneko
Benítez, José Ramón
Ceballos, Olga
Cortés Avizanda, Ainara
de Pablo, Félix
Donázar, José Antonio
Frías, Óscar
Gangoso, Laura
García Alfonso, Marina
González, José Luis
Grande, Juan Manuel
Serrano, David
Tella, José Luis
Blanco, Guillermo
author Gómez López, Guillermo
author_facet Gómez López, Guillermo
Sanz Aguilar, Ana
Carrete, Martina
Arrondo, Eneko
Benítez, José Ramón
Ceballos, Olga
Cortés Avizanda, Ainara
de Pablo, Félix
Donázar, José Antonio
Frías, Óscar
Gangoso, Laura
García Alfonso, Marina
González, José Luis
Grande, Juan Manuel
Serrano, David
Tella, José Luis
Blanco, Guillermo
author_role author
author2 Sanz Aguilar, Ana
Carrete, Martina
Arrondo, Eneko
Benítez, José Ramón
Ceballos, Olga
Cortés Avizanda, Ainara
de Pablo, Félix
Donázar, José Antonio
Frías, Óscar
Gangoso, Laura
García Alfonso, Marina
González, José Luis
Grande, Juan Manuel
Serrano, David
Tella, José Luis
Blanco, Guillermo
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv demography
islands
Neophron percnopterus
nestling sex
offspring sex ratio
sex sequence
topic demography
islands
Neophron percnopterus
nestling sex
offspring sex ratio
sex sequence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Variation in offspring sex ratio, particularly in birds, has been frequently studied over the last century, although seldom using long-term monitoring data. In raptors, the cost of raising males and females is not equal, and several variables have been foundto have significant effects on sex ratio, including food availability, parental age, and hatching order. Sex ratio differences between island populations and their mainland counterparts have been poorly documented, despite broad scientific literature on the island syndrome reporting substantial differences in population demography and ecology. Here, we assessed individual and environmental factors potentially affecting the secondary sex ratio of the long- lived Egyptian vulture Neophron percnopterus. We used data collected from Spanish mainland and island populations over a ca. 30- year period (1995–2021) to assess the effects of insularity, parental age, breeding phenol-ogy, brood size, hatching order, type of breeding unit (pairs vs. trios), and spatial andtemporal variability on offspring sex ratio. No sex bias was found at the population level, but two opposite trends were observed between mainland and island popula-tions consistent with the island syndrome. Offspring sex ratio was nonsignificantly female-biased in mainland Spain (0.47,n= 1112) but significantly male- biased in the Canary Islands (0.55, n= 499), where a male- biased mortality among immatures could be compensating for offspring biases and maintaining a paired adult sex ratio. Temporal and spatial variation in food availability might also have some influence on sex ratio, although the difficulties in quantifying them preclude us from determin-ing the magnitude of such influence. This study shows that insularity influences the offspring sex ratio of the Egyptian vulture through several processes that can affect island and mainland populations differentially. Our research contributes to improving our understanding of sex allocation theory by investigating whether sex ratio devia-tions from parity are possible as a response to changing environments comprised by multiple and complexly interrelated factors.
Fil: Gómez López, Guillermo. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
Fil: Sanz Aguilar, Ana. Institut D´investigacion Sanitaria Llles Balears (idlsba); España
Fil: Carrete, Martina. Universidad Pablo de Olavide.; España
Fil: Arrondo, Eneko. Universidad de Granada; España
Fil: Benítez, José Ramón. Junta de Andalucia; España
Fil: Ceballos, Olga. No especifíca;
Fil: Cortés Avizanda, Ainara. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: de Pablo, Félix. No especifíca;
Fil: Donázar, José Antonio. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Frías, Óscar. Universidad Pablo de Olavide.; España
Fil: Gangoso, Laura. Universidad Complutense de Madrid; España
Fil: García Alfonso, Marina. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: González, José Luis. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
Fil: Grande, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
Fil: Serrano, David. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Tella, José Luis. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Blanco, Guillermo. Consejo Superior de Investigaciones Científicas. Museo Nacional de Ciencias Naturales; España
description Variation in offspring sex ratio, particularly in birds, has been frequently studied over the last century, although seldom using long-term monitoring data. In raptors, the cost of raising males and females is not equal, and several variables have been foundto have significant effects on sex ratio, including food availability, parental age, and hatching order. Sex ratio differences between island populations and their mainland counterparts have been poorly documented, despite broad scientific literature on the island syndrome reporting substantial differences in population demography and ecology. Here, we assessed individual and environmental factors potentially affecting the secondary sex ratio of the long- lived Egyptian vulture Neophron percnopterus. We used data collected from Spanish mainland and island populations over a ca. 30- year period (1995–2021) to assess the effects of insularity, parental age, breeding phenol-ogy, brood size, hatching order, type of breeding unit (pairs vs. trios), and spatial andtemporal variability on offspring sex ratio. No sex bias was found at the population level, but two opposite trends were observed between mainland and island popula-tions consistent with the island syndrome. Offspring sex ratio was nonsignificantly female-biased in mainland Spain (0.47,n= 1112) but significantly male- biased in the Canary Islands (0.55, n= 499), where a male- biased mortality among immatures could be compensating for offspring biases and maintaining a paired adult sex ratio. Temporal and spatial variation in food availability might also have some influence on sex ratio, although the difficulties in quantifying them preclude us from determin-ing the magnitude of such influence. This study shows that insularity influences the offspring sex ratio of the Egyptian vulture through several processes that can affect island and mainland populations differentially. Our research contributes to improving our understanding of sex allocation theory by investigating whether sex ratio devia-tions from parity are possible as a response to changing environments comprised by multiple and complexly interrelated factors.
publishDate 2023
dc.date.none.fl_str_mv 2023-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/240750
Gómez López, Guillermo; Sanz Aguilar, Ana; Carrete, Martina; Arrondo, Eneko; Benítez, José Ramón; et al.; Insularity determines nestling sex ratio variation in Egyptian vulture populations; Wiley; Ecology and Evolution; 13; 8; 7-2023; 1-18
2045-7758
2045-7758
CONICET Digital
CONICET
url http://hdl.handle.net/11336/240750
identifier_str_mv Gómez López, Guillermo; Sanz Aguilar, Ana; Carrete, Martina; Arrondo, Eneko; Benítez, José Ramón; et al.; Insularity determines nestling sex ratio variation in Egyptian vulture populations; Wiley; Ecology and Evolution; 13; 8; 7-2023; 1-18
2045-7758
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/ece3.10371
info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.10371
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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