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Ecological specialization to fluctuating resources prevents long-distance migratory raptors from becoming sedentary on islands.

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Ecological specialization to fluctuating resources prevents long-distance migratory raptors from becoming sedentary on islands.

dc.contributor.author	Gangoso, Laura
dc.contributor.author	López López, Pascual
dc.contributor.author	Grande, Juan Manuel
dc.contributor.author	Mellone, Ugo
dc.contributor.author	Limiñana, Rubén
dc.contributor.author	Urios, Vicente
dc.contributor.author	Ferrer, Miguel
dc.date.accessioned	2020-04-09T12:05:23Z
dc.date.available	2020-04-09T12:05:23Z
dc.date.issued	2013
dc.identifier.uri	https://hdl.handle.net/10550/73867
dc.description.abstract	Background The adaptive transition between behavioral strategies, such as the shift from migratoriness to sedentariness, remains an outstanding question in evolutionary ecology. Density-dependent variation in the age of first breeding has been proposed as a feasible mechanism through which long-lived migratory birds with deferred sexual maturity should become sedentary to persist on islands. Although this pattern seems to hold for most raptors and herons, a few exceptions have been identified. One of these exceptions is the Eleonora's falcon, a long-distance migratory bird, which shows one of the most peculiar adaptations in the timing of reproduction and food requirements among raptors. Methodology/Principal Findings Here, we compiled data concerning demography, banding recoveries and satellite tracking of Eleonora's falcons to discuss likely explanations for the exceptional behavior of this insular long-distance migratory species. Conclusions/Significance New data reveal that Eleonora's falcons do return to the natal colonies in their first year and young birds are able to breed. However, in contrast to previous hypothesis, the highly specialized strategy of this and other ecologically similar species, as well as the virtual lack of food during winter at breeding areas prevent them from becoming sedentary on islands. Although the ultimate mechanisms underlying the process of sedentarization remain poorly understood, the evidence provided reveal the existence of important trade-offs associated with ecological specialization that may become particularly relevant in the present context of global change.
dc.language.iso	eng
dc.relation.ispartof	Plos One, 2013, vol. 8, num. 4, p. e61615
dc.source	Gangoso, Laura López López, Pascual Grande, Juan Manuel Mellone, Ugo Limiñana, Rubén Urios, Vicente Ferrer, Miguel 2013 Ecological specialization to fluctuating resources prevents long-distance migratory raptors from becoming sedentary on islands. Plos One 8 4 e61615
dc.subject	Zoologia
dc.subject	Biologia
dc.title	Ecological specialization to fluctuating resources prevents long-distance migratory raptors from becoming sedentary on islands.
dc.type	journal article	es_ES
dc.date.updated	2020-04-09T12:05:23Z
dc.identifier.doi	https://doi.org/10.1371/journal.pone.0061615
dc.identifier.idgrec	137073
dc.rights.accessRights	open access	es_ES