Artículo

De Mársico, M.C.; Mahler, B.; Chomnalez, M.; Di Giácomo, A.G.; Reboreda, J.C. "Host use by generalist and specialist brood-parasitic cowbirds at population and individual levels" (2010) Advances in the Study of Behavior. 42(C):83-121
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Abstract:

We analyzed host use at population and individual levels in the host-generalist shiny cowbird (Molothrus bonariensis) and in the host-specialist screaming cowbird (M. rufoaxillaris). At the population level, shiny cowbirds were less generalists than previously assumed and host use varied considerably among regions. There was, however, no clear preference for host species, since we found no associations between frequency of parasitism and host's body mass, type of nest, or genetic distance between host and parasite. Regarding screaming cowbirds, frequency and intensity of parasitism varied among host populations. Parasitic eggs and chicks were equally successful in the primary and secondary hosts, but they experienced high mortality rates when transferred to other suitable, but unused hosts. Screaming and shiny cowbirds overlapped little in host use and had no apparent effect on each other's success when reared together in a common host. At the individual level, there was an association between mtDNA haplotypes of shiny and screaming cowbird chicks and the hosts in whose nests they were found, indicating that nest choice by parasitic females is not random. We discuss how host imprinting by females can lead to the formation of host-specific races and how the occurrence of recognition errors and social learning can lead to the colonization of new hosts. © 2010 Elsevier Inc.

Registro:

Documento: Artículo
Título:Host use by generalist and specialist brood-parasitic cowbirds at population and individual levels
Autor:De Mársico, M.C.; Mahler, B.; Chomnalez, M.; Di Giácomo, A.G.; Reboreda, J.C.
Filiación:Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Departamento de Conservación, Aves Argentinas/Asociación Ornitológica del Plata, Buenos Aires, Argentina
Palabras clave:Brood parasitism; Cowbirds; Host imprinting; Host use; Molothrus
Año:2010
Volumen:42
Número:C
Página de inicio:83
Página de fin:121
DOI: http://dx.doi.org/10.1016/S0065-3454(10)42003-3
Título revista:Advances in the Study of Behavior
Título revista abreviado:Adv. Study Behav.
ISSN:00653454
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00653454_v42_nC_p83_DeMarsico

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Citas:

---------- APA ----------
De Mársico, M.C., Mahler, B., Chomnalez, M., Di Giácomo, A.G. & Reboreda, J.C. (2010) . Host use by generalist and specialist brood-parasitic cowbirds at population and individual levels. Advances in the Study of Behavior, 42(C), 83-121.
http://dx.doi.org/10.1016/S0065-3454(10)42003-3
---------- CHICAGO ----------
De Mársico, M.C., Mahler, B., Chomnalez, M., Di Giácomo, A.G., Reboreda, J.C. "Host use by generalist and specialist brood-parasitic cowbirds at population and individual levels" . Advances in the Study of Behavior 42, no. C (2010) : 83-121.
http://dx.doi.org/10.1016/S0065-3454(10)42003-3
---------- MLA ----------
De Mársico, M.C., Mahler, B., Chomnalez, M., Di Giácomo, A.G., Reboreda, J.C. "Host use by generalist and specialist brood-parasitic cowbirds at population and individual levels" . Advances in the Study of Behavior, vol. 42, no. C, 2010, pp. 83-121.
http://dx.doi.org/10.1016/S0065-3454(10)42003-3
---------- VANCOUVER ----------
De Mársico, M.C., Mahler, B., Chomnalez, M., Di Giácomo, A.G., Reboreda, J.C. Host use by generalist and specialist brood-parasitic cowbirds at population and individual levels. Adv. Study Behav. 2010;42(C):83-121.
http://dx.doi.org/10.1016/S0065-3454(10)42003-3