Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird

Autores
de Marsico, Maria Cecilia; Gantchoff, Mariela G.; Reboreda, Juan Carlos
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
textbook examples of host-parasite coevolution. By contrast, reciprocal adaptations and counteradaptations beyond the egg stage in brood parasites and their hosts have received less attention. The screaming cowbird (Molothrus rufoaxillaris) is a specialist obligate brood parasite whose fledglings look identical to those of its primary host, the baywing (Agelaioides badius). Such a resemblance has been proposed as an adaptation in response to host discrimination against odd-looking young, but evidence supporting this idea is scarce. Here, we examined this hypothesis by comparing the survival rates of young screaming cowbirds and non-mimetic shiny cowbirds (Molothrus bonariensis) cross-fostered to baywing nests and quantifying the similarity in plumage colour and begging calls between host and cowbird fledglings. Shiny cowbirds suffered higher post-fledging mortality rates (83%) than screaming cowbirds (0%) owing to host rejection. Visual modelling revealed that screaming cowbirds, but not shiny cowbirds, were indistinguishable from host young in plumage colour. Similarly, screaming cowbirds matched baywings' begging calls more closely than shiny cowbirds. Our results strongly support the occurrence of host fledgling mimicry in screaming cowbirds and suggest a role of visual and vocal cues in fledgling discrimination by baywings.
Fil: de Marsico, Maria Cecilia. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina
Fil: Gantchoff, Mariela G.. Universidad de Buenos Aires; Argentina
Fil: Reboreda, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina. Universidad de Buenos Aires; Argentina
Materia
Brood Parasitism
Chick Rejection
Coevolution
Cowbird
Mimicry
Visual Modelling
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/68172
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbirdde Marsico, Maria CeciliaGantchoff, Mariela G.Reboreda, Juan CarlosBrood ParasitismChick RejectionCoevolutionCowbirdMimicryVisual Modellinghttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1textbook examples of host-parasite coevolution. By contrast, reciprocal adaptations and counteradaptations beyond the egg stage in brood parasites and their hosts have received less attention. The screaming cowbird (Molothrus rufoaxillaris) is a specialist obligate brood parasite whose fledglings look identical to those of its primary host, the baywing (Agelaioides badius). Such a resemblance has been proposed as an adaptation in response to host discrimination against odd-looking young, but evidence supporting this idea is scarce. Here, we examined this hypothesis by comparing the survival rates of young screaming cowbirds and non-mimetic shiny cowbirds (Molothrus bonariensis) cross-fostered to baywing nests and quantifying the similarity in plumage colour and begging calls between host and cowbird fledglings. Shiny cowbirds suffered higher post-fledging mortality rates (83%) than screaming cowbirds (0%) owing to host rejection. Visual modelling revealed that screaming cowbirds, but not shiny cowbirds, were indistinguishable from host young in plumage colour. Similarly, screaming cowbirds matched baywings' begging calls more closely than shiny cowbirds. Our results strongly support the occurrence of host fledgling mimicry in screaming cowbirds and suggest a role of visual and vocal cues in fledgling discrimination by baywings.Fil: de Marsico, Maria Cecilia. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; ArgentinaFil: Gantchoff, Mariela G.. Universidad de Buenos Aires; ArgentinaFil: Reboreda, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina. Universidad de Buenos Aires; ArgentinaThe Royal Society2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68172de Marsico, Maria Cecilia; Gantchoff, Mariela G.; Reboreda, Juan Carlos; Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 279; 1742; 5-2012; 3401-34080962-8452CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2012.0612info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/full/10.1098/rspb.2012.0612info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3396896/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:22:54Zoai:ri.conicet.gov.ar:11336/68172instacron: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:34982025-09-29 10:22:54.76CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
title Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
spellingShingle Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
de Marsico, Maria Cecilia
Brood Parasitism
Chick Rejection
Coevolution
Cowbird
Mimicry
Visual Modelling
title_short Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
title_full Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
title_fullStr Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
title_full_unstemmed Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
title_sort Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird
dc.creator.none.fl_str_mv de Marsico, Maria Cecilia
Gantchoff, Mariela G.
Reboreda, Juan Carlos
author de Marsico, Maria Cecilia
author_facet de Marsico, Maria Cecilia
Gantchoff, Mariela G.
Reboreda, Juan Carlos
author_role author
author2 Gantchoff, Mariela G.
Reboreda, Juan Carlos
author2_role author
author
dc.subject.none.fl_str_mv Brood Parasitism
Chick Rejection
Coevolution
Cowbird
Mimicry
Visual Modelling
topic Brood Parasitism
Chick Rejection
Coevolution
Cowbird
Mimicry
Visual Modelling
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv textbook examples of host-parasite coevolution. By contrast, reciprocal adaptations and counteradaptations beyond the egg stage in brood parasites and their hosts have received less attention. The screaming cowbird (Molothrus rufoaxillaris) is a specialist obligate brood parasite whose fledglings look identical to those of its primary host, the baywing (Agelaioides badius). Such a resemblance has been proposed as an adaptation in response to host discrimination against odd-looking young, but evidence supporting this idea is scarce. Here, we examined this hypothesis by comparing the survival rates of young screaming cowbirds and non-mimetic shiny cowbirds (Molothrus bonariensis) cross-fostered to baywing nests and quantifying the similarity in plumage colour and begging calls between host and cowbird fledglings. Shiny cowbirds suffered higher post-fledging mortality rates (83%) than screaming cowbirds (0%) owing to host rejection. Visual modelling revealed that screaming cowbirds, but not shiny cowbirds, were indistinguishable from host young in plumage colour. Similarly, screaming cowbirds matched baywings' begging calls more closely than shiny cowbirds. Our results strongly support the occurrence of host fledgling mimicry in screaming cowbirds and suggest a role of visual and vocal cues in fledgling discrimination by baywings.
Fil: de Marsico, Maria Cecilia. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina
Fil: Gantchoff, Mariela G.. Universidad de Buenos Aires; Argentina
Fil: Reboreda, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria; Argentina. Universidad de Buenos Aires; Argentina
description textbook examples of host-parasite coevolution. By contrast, reciprocal adaptations and counteradaptations beyond the egg stage in brood parasites and their hosts have received less attention. The screaming cowbird (Molothrus rufoaxillaris) is a specialist obligate brood parasite whose fledglings look identical to those of its primary host, the baywing (Agelaioides badius). Such a resemblance has been proposed as an adaptation in response to host discrimination against odd-looking young, but evidence supporting this idea is scarce. Here, we examined this hypothesis by comparing the survival rates of young screaming cowbirds and non-mimetic shiny cowbirds (Molothrus bonariensis) cross-fostered to baywing nests and quantifying the similarity in plumage colour and begging calls between host and cowbird fledglings. Shiny cowbirds suffered higher post-fledging mortality rates (83%) than screaming cowbirds (0%) owing to host rejection. Visual modelling revealed that screaming cowbirds, but not shiny cowbirds, were indistinguishable from host young in plumage colour. Similarly, screaming cowbirds matched baywings' begging calls more closely than shiny cowbirds. Our results strongly support the occurrence of host fledgling mimicry in screaming cowbirds and suggest a role of visual and vocal cues in fledgling discrimination by baywings.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
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/11336/68172
de Marsico, Maria Cecilia; Gantchoff, Mariela G.; Reboreda, Juan Carlos; Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 279; 1742; 5-2012; 3401-3408
0962-8452
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68172
identifier_str_mv de Marsico, Maria Cecilia; Gantchoff, Mariela G.; Reboreda, Juan Carlos; Host-parasite coevolution beyond the nestling stage?: Mimicry of host fledglings by the specialist screaming cowbird; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 279; 1742; 5-2012; 3401-3408
0962-8452
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2012.0612
info:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/full/10.1098/rspb.2012.0612
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3396896/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv The Royal Society
publisher.none.fl_str_mv The Royal Society
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 13.070432

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