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Artículo

Coevolutionary arms race between a specialist brood parasite, the Screaming Cowbird, and its host, the Grayish Baywing

de Marsico, Maria CeciliaIcon ; Ursino, Cynthia AlejandraIcon ; Scardamaglia, Romina ClaraIcon ; Reboreda, Juan CarlosIcon
Fecha de publicación: 10/2019
Editorial: Springer
Revista: Journal of Ornithology
ISSN: 2193-7192
e-ISSN: 2193-7206
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Zoología, Ornitología, Entomología, Etología

Resumen

Interspecific brood parasites exploit the parental care of host species. This exploitation entails fitness costs for the hosts, which favor the evolution of antiparasitic defenses. Host defenses select for counter-defenses in the parasite, which in turn select for improved host defenses; this results in a coevolutionary arms race that may operate at each stage of the nesting cycle of the host. Most studied examples of the coevolutionary arms race in brood parasites are restricted to the egg stage, with relatively few studies showing coevolution between hosts and parasites at the nestling or fledgling stages; studies on the whole set of host defenses and potential parasite counter-defenses at each stage of the breeding cycle are still lacking. Systems in which parasites are host specialists are particularly well suited to an examination of the pairwise coevolutionary interactions before, during and after host egg-laying, and how these interactions have shaped host resistance or tolerance of parasitism. The Screaming Cowbird (Molothrus rufoaxillaris) is one of the most specialized brood parasites, and mainly parasitizes nests of a single host species, the Grayish Baywing (Agelaioides badius). Parasitism rates of Grayish Baywing nests are extremely high, with most nests parasitized several times. Several traits of this host-parasite system suggest ancient coevolutionary relationships encompassing the entire nesting cycle. In this paper we summarize the main results of a long-term study on the costs of Screaming Cowbird parasitism on the Grayish Baywing’s reproductive success and how these costs have favored reciprocal adaptations and counter-adaptations at each stage of the nesting cycle.
Palabras clave: BROOD PARASITISM , COEVOLUTION , COUNTER-DEFENSE , DEFENSE , HOST SPECIALIST , PARENTAL CARE
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/151408
DOI: http://dx.doi.org/10.1007/s10336-019-01697-0
URL: https://link.springer.com/article/10.1007%2Fs10336-019-01697-0
Colecciones
Articulos(IEGEBA)
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Citación
de Marsico, Maria Cecilia; Ursino, Cynthia Alejandra; Scardamaglia, Romina Clara; Reboreda, Juan Carlos; Coevolutionary arms race between a specialist brood parasite, the Screaming Cowbird, and its host, the Grayish Baywing; Springer; Journal of Ornithology; 160; 4; 10-2019; 1221-1233
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