Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird

The vocalizations of some young brood-parasitic birds closely resemble those of their host's young. Such similarities might arise because hosts bestow the greatest parental care in response to their own species' call type. We used a playback experiment to assess the effectiveness of the ne...

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Detalles Bibliográficos
Autores principales:	Ursino, C.A., Gloag, R., Reboreda, J.C., De Mársico, M.C.
Formato:	JOUR
Materias:	begging call brood parasitism cowbird mimicry Molothrus parental care Aves Molothrus bonariensis Molothrus rufoaxillaris
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_10452249_v29_n2_p328_Ursino
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_10452249_v29_n2_p328_Ursino
record_format	dspace
spelling	todo:paper_10452249_v29_n2_p328_Ursino2023-10-03T15:58:21Z Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird Ursino, C.A. Gloag, R. Reboreda, J.C. De Mársico, M.C. begging call brood parasitism cowbird mimicry Molothrus parental care Aves Molothrus Molothrus bonariensis Molothrus rufoaxillaris The vocalizations of some young brood-parasitic birds closely resemble those of their host's young. Such similarities might arise because hosts bestow the greatest parental care in response to their own species' call type. We used a playback experiment to assess the effectiveness of the nestling call structures of 2 brood parasites, the specialist screaming cowbird (Molothrus rufoaxillaris) and the generalist shiny cowbird (M. bonariensis), in stimulating parental provisioning in a shared host, the baywing (Agelaioides badius). Screaming cowbird begging calls closely resemble those of baywing young and thus should best exploit any bias for species-specific cues. Shiny cowbird calls, in contrast, are unlike baywings but can instead exploit nonspecific sensory biases for long call duration and syllable repetition. We found that playback of screaming cowbird's mimetic calls elicited increases in feeding rates equivalent to those of playback of the host's own young, whereas shiny cowbird calls failed to increase provisioning rates above those of no-broadcast control sessions. These results indicate that baywings discriminate between nestling call structures in favor of their own species calls when adjusting parental investment and support the view that selection for optimal host provisioning can favor vocal mimicry by parasitic offspring. © The Author(s) 2017. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. 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_10452249_v29_n2_p328_Ursino
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	begging call brood parasitism cowbird mimicry Molothrus parental care Aves Molothrus Molothrus bonariensis Molothrus rufoaxillaris
spellingShingle	begging call brood parasitism cowbird mimicry Molothrus parental care Aves Molothrus Molothrus bonariensis Molothrus rufoaxillaris Ursino, C.A. Gloag, R. Reboreda, J.C. De Mársico, M.C. Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
topic_facet	begging call brood parasitism cowbird mimicry Molothrus parental care Aves Molothrus Molothrus bonariensis Molothrus rufoaxillaris
description	The vocalizations of some young brood-parasitic birds closely resemble those of their host's young. Such similarities might arise because hosts bestow the greatest parental care in response to their own species' call type. We used a playback experiment to assess the effectiveness of the nestling call structures of 2 brood parasites, the specialist screaming cowbird (Molothrus rufoaxillaris) and the generalist shiny cowbird (M. bonariensis), in stimulating parental provisioning in a shared host, the baywing (Agelaioides badius). Screaming cowbird begging calls closely resemble those of baywing young and thus should best exploit any bias for species-specific cues. Shiny cowbird calls, in contrast, are unlike baywings but can instead exploit nonspecific sensory biases for long call duration and syllable repetition. We found that playback of screaming cowbird's mimetic calls elicited increases in feeding rates equivalent to those of playback of the host's own young, whereas shiny cowbird calls failed to increase provisioning rates above those of no-broadcast control sessions. These results indicate that baywings discriminate between nestling call structures in favor of their own species calls when adjusting parental investment and support the view that selection for optimal host provisioning can favor vocal mimicry by parasitic offspring. © The Author(s) 2017. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. All rights reserved.
format	JOUR
author	Ursino, C.A. Gloag, R. Reboreda, J.C. De Mársico, M.C.
author_facet	Ursino, C.A. Gloag, R. Reboreda, J.C. De Mársico, M.C.
author_sort	Ursino, C.A.
title	Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
title_short	Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
title_full	Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
title_fullStr	Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
title_full_unstemmed	Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
title_sort	host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird
url	http://hdl.handle.net/20.500.12110/paper_10452249_v29_n2_p328_Ursino
work_keys_str_mv	AT ursinoca hostprovisioningbehaviorfavorsmimeticbeggingcallsinabroodparasiticcowbird AT gloagr hostprovisioningbehaviorfavorsmimeticbeggingcallsinabroodparasiticcowbird AT reboredajc hostprovisioningbehaviorfavorsmimeticbeggingcallsinabroodparasiticcowbird AT demarsicomc hostprovisioningbehaviorfavorsmimeticbeggingcallsinabroodparasiticcowbird
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Host provisioning behavior favors mimetic begging calls in a brood-parasitic cowbird

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