Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)

Avian obligate brood parasites exploit the parental care of individuals of other species (hosts) that rear the parasitic offspring at the expense of their own reproductive success. The costs of parasitism select for antiparasitic defences in host populations (i.e., adaptations that reduce the impact...

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Detalles Bibliográficos
Autores principales:	de Mársico, M.C., Reboreda, J.C.
Formato:	JOUR
Materias:	Agelaioides badius Brood parasitism Coevolution Mimicry Molothrus Aves Molothrus rufoaxillaris
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00733407_v29_n1_p1_deMarsico
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00733407_v29_n1_p1_deMarsico
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spelling	todo:paper_00733407_v29_n1_p1_deMarsico2023-10-03T14:53:30Z Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius) de Mársico, M.C. Reboreda, J.C. Agelaioides badius Brood parasitism Coevolution Mimicry Molothrus Aves Molothrus Molothrus rufoaxillaris Avian obligate brood parasites exploit the parental care of individuals of other species (hosts) that rear the parasitic offspring at the expense of their own reproductive success. The costs of parasitism select for antiparasitic defences in host populations (i.e., adaptations that reduce the impact of parasitism). This, in turn, may favour counteradaptations in the parasite population, leading to a coevolutionary arms race between parasite and host. We review the reciprocal adaptations between a specialist brood parasite, the Screaming Cowbird (Molothrus rufoaxillaris), and its primary host, the Baywing (Agelaioides badius). The defences of the Baywing include the rejection of parasitic females, a little predictable egg-laying behaviour, the rejection of whole "superparasitized" clutches, and discrimination against juveniles that do not resemble their own. These defences are partially countered by the Screaming Cowbird through an elusive behaviour and rapid egg-laying, a close monitoring of host nesting activities and the evolution of visual and vocal mimicry of host young in the parasite juveniles. These results suggest an escalated arms race between the Screaming Cowbird and the Baywing through the entire nesting cycle. Future studies of the interactions between these species before, during and after parasitism might improve the understanding of host-parasite coevolutionary processes and the evolution of specialization in host use in brood parasitic birds. © 2014, Association Ornitologica del Plata. All Rights Reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00733407_v29_n1_p1_deMarsico
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Agelaioides badius Brood parasitism Coevolution Mimicry Molothrus Aves Molothrus Molothrus rufoaxillaris
spellingShingle	Agelaioides badius Brood parasitism Coevolution Mimicry Molothrus Aves Molothrus Molothrus rufoaxillaris de Mársico, M.C. Reboreda, J.C. Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
topic_facet	Agelaioides badius Brood parasitism Coevolution Mimicry Molothrus Aves Molothrus Molothrus rufoaxillaris
description	Avian obligate brood parasites exploit the parental care of individuals of other species (hosts) that rear the parasitic offspring at the expense of their own reproductive success. The costs of parasitism select for antiparasitic defences in host populations (i.e., adaptations that reduce the impact of parasitism). This, in turn, may favour counteradaptations in the parasite population, leading to a coevolutionary arms race between parasite and host. We review the reciprocal adaptations between a specialist brood parasite, the Screaming Cowbird (Molothrus rufoaxillaris), and its primary host, the Baywing (Agelaioides badius). The defences of the Baywing include the rejection of parasitic females, a little predictable egg-laying behaviour, the rejection of whole "superparasitized" clutches, and discrimination against juveniles that do not resemble their own. These defences are partially countered by the Screaming Cowbird through an elusive behaviour and rapid egg-laying, a close monitoring of host nesting activities and the evolution of visual and vocal mimicry of host young in the parasite juveniles. These results suggest an escalated arms race between the Screaming Cowbird and the Baywing through the entire nesting cycle. Future studies of the interactions between these species before, during and after parasitism might improve the understanding of host-parasite coevolutionary processes and the evolution of specialization in host use in brood parasitic birds. © 2014, Association Ornitologica del Plata. All Rights Reserved.
format	JOUR
author	de Mársico, M.C. Reboreda, J.C.
author_facet	de Mársico, M.C. Reboreda, J.C.
author_sort	de Mársico, M.C.
title	Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
title_short	Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
title_full	Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
title_fullStr	Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
title_full_unstemmed	Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
title_sort	adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)
url	http://hdl.handle.net/20.500.12110/paper_00733407_v29_n1_p1_deMarsico
work_keys_str_mv	AT demarsicomc adaptationsandcounteradaptationsbetweenthescreamingcowbirdmolothrusrufoaxillarisandthebaywingagelaioidesbadius AT reboredajc adaptationsandcounteradaptationsbetweenthescreamingcowbirdmolothrusrufoaxillarisandthebaywingagelaioidesbadius
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Adaptations and counteradaptations between the screaming cowbird (molothrus rufoaxillaris) and the baywing (agelaioides badius)

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