Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata

The Yellow Cardinal Gubernatrix cristata is a globally endangered passerine endemic to southern South America. Although the conservation status of this species is alarming, there is no information about factors that affect its reproductive success. We studied the breeding biology of a Yellow Cardina...

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Autores principales:	Dominguez, Marisol, Reboreda, Juan Carlos, Mahler, Bettina
Publicado:	2015
Materias:	brood parasitism clutch size conservation status endangered species endemic species passerine reproductive biology reproductive success species conservation survival Argentina Corrientes Cardinalis Gubernatrix cristata Molothrus bonariensis Oestridae Passeriformes Philornis
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v25_n3_p294_Dominguez http://hdl.handle.net/20.500.12110/paper_09592709_v25_n3_p294_Dominguez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09592709_v25_n3_p294_Dominguez
record_format	dspace
spelling	paper:paper_09592709_v25_n3_p294_Dominguez2023-06-08T15:56:47Z Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata Dominguez, Marisol Reboreda, Juan Carlos Mahler, Bettina brood parasitism clutch size conservation status endangered species endemic species passerine reproductive biology reproductive success species conservation survival Argentina Corrientes Cardinalis Gubernatrix cristata Molothrus bonariensis Oestridae Passeriformes Philornis The Yellow Cardinal Gubernatrix cristata is a globally endangered passerine endemic to southern South America. Although the conservation status of this species is alarming, there is no information about factors that affect its reproductive success. We studied the breeding biology of a Yellow Cardinal population in Corrientes province in north-east Argentina and report reproductive parameters, such as timing of breeding, clutch size, hatching success and chick survival and analyse factors influencing nest survival. The breeding season lasted from October to December with most nesting attempts occurring during the second half of November. Re-nesting after nest failure occurred in approximately 35% of pairs but we did not observe re-nesting after successful attempts. Modal clutch size was three eggs and successful nests fledged on average 1.6 chicks. We observed brood parasitism by Shiny Cowbirds Molothrus bonariensis in 33% of the nests. The main cost of brood parasitism was the puncture of cardinal eggs by cowbird females, which very often resulted in nest abandonment. Another factor reducing reproductive success was parasitism by botflies Philornis sp., which occurred in 22% of the nests and reduced chick survival. We determined daily nest survival rate with MARK software and found that during the egg stage, it decreased with time of breeding and brood parasitism by Shiny Cowbirds. Our results indicate that Shiny Cowbird and botfly parasitism represent a threat for Yellow Cardinals. Conservation actions to protect the remaining populations of Yellow Cardinals should consider the impact of Shiny Cowbird parasitism. Copyright © BirdLife International 2014. Fil:Domínguez, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Reboreda, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mahler, B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v25_n3_p294_Dominguez http://hdl.handle.net/20.500.12110/paper_09592709_v25_n3_p294_Dominguez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	brood parasitism clutch size conservation status endangered species endemic species passerine reproductive biology reproductive success species conservation survival Argentina Corrientes Cardinalis Gubernatrix cristata Molothrus bonariensis Oestridae Passeriformes Philornis
spellingShingle	brood parasitism clutch size conservation status endangered species endemic species passerine reproductive biology reproductive success species conservation survival Argentina Corrientes Cardinalis Gubernatrix cristata Molothrus bonariensis Oestridae Passeriformes Philornis Dominguez, Marisol Reboreda, Juan Carlos Mahler, Bettina Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata
topic_facet	brood parasitism clutch size conservation status endangered species endemic species passerine reproductive biology reproductive success species conservation survival Argentina Corrientes Cardinalis Gubernatrix cristata Molothrus bonariensis Oestridae Passeriformes Philornis
description	The Yellow Cardinal Gubernatrix cristata is a globally endangered passerine endemic to southern South America. Although the conservation status of this species is alarming, there is no information about factors that affect its reproductive success. We studied the breeding biology of a Yellow Cardinal population in Corrientes province in north-east Argentina and report reproductive parameters, such as timing of breeding, clutch size, hatching success and chick survival and analyse factors influencing nest survival. The breeding season lasted from October to December with most nesting attempts occurring during the second half of November. Re-nesting after nest failure occurred in approximately 35% of pairs but we did not observe re-nesting after successful attempts. Modal clutch size was three eggs and successful nests fledged on average 1.6 chicks. We observed brood parasitism by Shiny Cowbirds Molothrus bonariensis in 33% of the nests. The main cost of brood parasitism was the puncture of cardinal eggs by cowbird females, which very often resulted in nest abandonment. Another factor reducing reproductive success was parasitism by botflies Philornis sp., which occurred in 22% of the nests and reduced chick survival. We determined daily nest survival rate with MARK software and found that during the egg stage, it decreased with time of breeding and brood parasitism by Shiny Cowbirds. Our results indicate that Shiny Cowbird and botfly parasitism represent a threat for Yellow Cardinals. Conservation actions to protect the remaining populations of Yellow Cardinals should consider the impact of Shiny Cowbird parasitism. Copyright © BirdLife International 2014.
author	Dominguez, Marisol Reboreda, Juan Carlos Mahler, Bettina
author_facet	Dominguez, Marisol Reboreda, Juan Carlos Mahler, Bettina
author_sort	Dominguez, Marisol
title	Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata
title_short	Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata
title_full	Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata
title_fullStr	Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata
title_full_unstemmed	Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata
title_sort	impact of shiny cowbird and botfly parasitism on the reproductive success of the globally endangered yellow cardinal gubernatrix cristata
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v25_n3_p294_Dominguez http://hdl.handle.net/20.500.12110/paper_09592709_v25_n3_p294_Dominguez
work_keys_str_mv	AT dominguezmarisol impactofshinycowbirdandbotflyparasitismonthereproductivesuccessofthegloballyendangeredyellowcardinalgubernatrixcristata AT reboredajuancarlos impactofshinycowbirdandbotflyparasitismonthereproductivesuccessofthegloballyendangeredyellowcardinalgubernatrixcristata AT mahlerbettina impactofshinycowbirdandbotflyparasitismonthereproductivesuccessofthegloballyendangeredyellowcardinalgubernatrixcristata
_version_	1768544189012770816

Impact of Shiny Cowbird and botfly parasitism on the reproductive success of the globally endangered Yellow Cardinal Gubernatrix cristata

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