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Differential survival throughout the full annual cycle of a migratory bird presents a life-history trade-off.

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Differential survival throughout the full annual cycle of a migratory bird presents a life-history trade-off.

dc.contributor.author	Buechley, E
dc.contributor.author	Oppel, O
dc.contributor.author	Efrat, R
dc.contributor.author	Phipps, W.L
dc.contributor.author	Carbonell, I
dc.contributor.author	Álvarez, E
dc.contributor.author	Andreotti, A
dc.contributor.author	Arkumarev, V
dc.contributor.author	Berger-Tal, O
dc.contributor.author	Bermejo, A
dc.contributor.author	Bounas, A
dc.contributor.author	Ceccolini, G
dc.contributor.author	Cenerini, A
dc.contributor.author	Dobrev, V
dc.contributor.author	Duriez, O
dc.contributor.author	García, J
dc.contributor.author	García-Ripollés, C
dc.contributor.author	Galán, M
dc.contributor.author	Gil, A
dc.contributor.author	Giraud, L
dc.contributor.author	Hatzofe, O
dc.contributor.author	Iglesias, J.J
dc.contributor.author	Karyakin, I
dc.contributor.author	Kobierzycki, E
dc.contributor.author	Kret, E
dc.contributor.author	Loercher, F
dc.contributor.author	López-López, P
dc.contributor.author	Miller, Y
dc.contributor.author	Mueller, T
dc.contributor.author	Nikolov, S.C
dc.contributor.author	De La Puente, J
dc.contributor.author	Sapir, N
dc.contributor.author	Saravia, V
dc.contributor.author	Sekercioglu, C.H
dc.contributor.author	Sillett, T.S
dc.contributor.author	Tavares, J
dc.contributor.author	Urios, V
dc.contributor.author	Marra, P.P.
dc.date.accessioned	2022-02-09T12:06:23Z
dc.date.available	2022-02-09T12:06:23Z
dc.date.issued	2021
dc.identifier.citation	Buechley, E Oppel, O Efrat, R Phipps, W.L Carbonell, I Álvarez, E Andreotti, A Arkumarev, V Berger-Tal, O Bermejo, A Bounas, A Ceccolini, G Cenerini, A Dobrev, V Duriez, O García, J García-Ripollés, C Galán, M Gil, A Giraud, L Hatzofe, O Iglesias, J.J Karyakin, I Kobierzycki, E Kret, E Loercher, F López-López, P Miller, Y Mueller, T Nikolov, S.C De La Puente, J Sapir, N Saravia, V Sekercioglu, C.H Sillett, T.S Tavares, J Urios, V Marra, P.P. 2021 Differential survival throughout the full annual cycle of a migratory bird presents a life-history trade-off. Journal of Animal Ecology 90 5 1228 1238
dc.identifier.uri	https://hdl.handle.net/10550/81552
dc.description.abstract	Long-distance migrations are among the most physically demanding feats animals perform. Understanding the potential costs and benefits of such behaviour is a fundamental question in ecology and evolution. A hypothetical cost of migration should be outweighed by higher productivity and/or higher annual survival, but few studies on migratory species have been able to directly quantify patterns of survival throughout the full annual cycle and across the majority of a species' range. Here, we use telemetry data from 220 migratory Egyptian vultures Neophron percnopterus, tracked for 3,186 bird months and across approximately 70% of the species' global distribution, to test for differences in survival throughout the annual cycle. We estimated monthly survival probability relative to migration and latitude using a multi-event capture-recapture model in a Bayesian framework that accounted for age, origin, subpopulation and the uncertainty of classifying fates from tracking data. We found lower survival during migration compared to stationary periods (β = −0.816; 95% credible interval: −1.290 to −0.318) and higher survival on non-breeding grounds at southern latitudes (<25°N; β = 0.664; 0.076-1.319) compared to on breeding grounds. Survival was also higher for individuals originating from Western Europe (β = 0.664; 0.110-1.330) as compared to further east in Europe and Asia, and improved with age (β = 0.030; 0.020-0.042). Anthropogenic mortalities accounted for half of the mortalities with a known cause and occurred mainly in northern latitudes. Many juveniles drowned in the Mediterranean Sea on their first autumn migration while there were few confirmed mortalities in the Sahara Desert, indicating that migration barriers are likely species-specific. Our study advances the understanding of important fitness trade-offs associated with long-distance migration. We conclude that there is lower survival associated with migration, but that this may be offset by higher non-breeding survival at lower latitudes. We found more human-caused mortality farther north, and suggest that increasing anthropogenic mortality could disrupt the delicate migration trade-off balance. Research to investigate further potential benefits of migration (e.g. differential productivity across latitudes) could clarify how migration evolved and how migrants may persist in a rapidly changing world.
dc.language.iso	eng
dc.relation.ispartof	Journal of Animal Ecology, 2021, vol. 90, num. 5, p. 1228-1238
dc.subject	Zoologia
dc.subject	Ornitologia
dc.title	Differential survival throughout the full annual cycle of a migratory bird presents a life-history trade-off.
dc.type	journal article	es_ES
dc.date.updated	2022-02-09T12:06:23Z
dc.identifier.doi	10.1111/1365-2656.13449
dc.identifier.idgrec	150175
dc.rights.accessRights	open access	es_ES