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dc.contributor.author
Gloag, Ros
dc.contributor.author
Fiorini, Vanina Dafne
dc.contributor.author
Reboreda, Juan Carlos
dc.contributor.author
Kacelnik, Alex
dc.date.available
2017-07-06T17:28:54Z
dc.date.issued
2014-04
dc.identifier.citation
Gloag, Ros; Fiorini, Vanina Dafne; Reboreda, Juan Carlos; Kacelnik, Alex; Shiny cowbirds share foster mothers but not true mothers in multiply parasitized mockingbird nests; Springer; Behavioral Ecology And Sociobiology; 68; 4; 4-2014; 681-689
dc.identifier.issn
0340-5443
dc.identifier.uri
http://hdl.handle.net/11336/19740
dc.description.abstract
Obligate brood parasitic birds, such as cowbirds, evade parental care duties by laying their eggs in the nests of other species. Cowbirds are assumed to avoid laying repeatedly in the same nest so as to prevent intrabrood competition between their offspring. However, because searching for host nests requires time and energy, laying more than one egg per nest might be favoured where hosts are large and can readily rear multiple parasites per brood. Such ‘repeat parasitism’ by females would have important consequences for parasite evolution because young parasites would then incur indirect fitness costs from behaving selfishly. We investigated shiny cowbird (Molothrus bonariensis) parasitism of a large host, the chalk-browed mockingbird (Mimus saturninus), in a population where over 70 % of the parasitized mockingbird nests receive multiple cowbird eggs. We assessed egg maternity directly, using cameras at nests to film the laying of individually-marked females. We also supplemented video data with evidence from egg morphology, after confirming that each female lays eggs of a consistent appearance. From 133 eggs laid, we found that less than 5 % were followed by the same female visiting the nest to lay again or to puncture eggs. Multiple eggs in mockingbird nests were instead the result of different females, with up to eight individuals parasitizing a single brood. Thus, while cowbird chicks regularly share mockingbird nests with conspecifics, these are unlikely to be their maternal siblings. Our results are consistent with shiny cowbird females following a one-egg-per-nest rule, even where hosts can rear multiple parasitic young.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Brood Parasitism
dc.subject
Egg Morphology
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Mimus Saturninus
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Molothrus Bonariensis
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Zoología, Ornitología, Entomología, Etología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Shiny cowbirds share foster mothers but not true mothers in multiply parasitized mockingbird nests
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-05T15:02:23Z
dc.identifier.eissn
1432-0762
dc.journal.volume
68
dc.journal.number
4
dc.journal.pagination
681-689
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Gloag, Ros. University of Oxford; Reino Unido
dc.description.fil
Fil: Fiorini, Vanina Dafne. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
dc.description.fil
Fil: Reboreda, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
dc.description.fil
Fil: Kacelnik, Alex. University of Oxford; Reino Unido
dc.journal.title
Behavioral Ecology And Sociobiology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00265-014-1682-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00265-014-1682-2
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