Artículo

Hauber, M.E.; Kacelnik, A.; DeVoogd, T.J.; Clayton, N.S.; Reboreda, J.C. "Sexual dimorphism and species differences in HVC volumes of cowbirds" (1999) Behavioral Neuroscience. 113(5):1095-1099
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Abstract:

Cowbirds exhibit extensive variation in their social, territorial, and reproductive behaviors. Nissl-stained brain sections of specimens from a previous study (J. C. Reboreda, N. S. Clayton, and A. Kacelnik, 1996) were used to study the gross anatomy of a song control nucleus in 3 South American cowbirds (bay-winged, Molothrus badius; shiny, M. bonariensis; and screaming, M. rufoaxillaris). Cowbird high vocal center (HVC) volumes were consistently higher in males than in females in all 3 species. The largest HVC size of females found in bay-winged cowbirds is consistent with observations that females of this species, but not of the other 2 species, occasionally sing. The extent of the sexual dimorphism of relative HVC size was highest for the sexually dichromatic and promiscuous shiny cowbirds and smaller for the monochromatic and monogamous bay-winged and screaming cowbirds, suggesting that selection pressures associated with morphological traits and social systems are reflected in brain architecture.

Registro:

Documento: Artículo
Título:Sexual dimorphism and species differences in HVC volumes of cowbirds
Autor:Hauber, M.E.; Kacelnik, A.; DeVoogd, T.J.; Clayton, N.S.; Reboreda, J.C.
Filiación:University of California, Davis, CA, United States
Sect. Neurbio., Physiol., and Behav., University of California, Davis, CA, United States
Department of Zoology, University of Oxford, Oxford, United Kingdom
Departamento de Ciencias Biologicas, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Field of Neurobiology and Behavior, S. G. Mudd Hall, Cornell University, Ithaca, NY 14853-2702, United States
Palabras clave:animal tissue; article; behavior; bird; brain region; brain size; female; male; mating; nonhuman; sex difference; singing; species difference
Año:1999
Volumen:113
Número:5
Página de inicio:1095
Página de fin:1099
DOI: http://dx.doi.org/10.1037/0735-7044.113.5.1095
Título revista:Behavioral Neuroscience
Título revista abreviado:Behav. Neurosci.
ISSN:07357044
CODEN:BENED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07357044_v113_n5_p1095_Hauber

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Citas:

---------- APA ----------
Hauber, M.E., Kacelnik, A., DeVoogd, T.J., Clayton, N.S. & Reboreda, J.C. (1999) . Sexual dimorphism and species differences in HVC volumes of cowbirds. Behavioral Neuroscience, 113(5), 1095-1099.
http://dx.doi.org/10.1037/0735-7044.113.5.1095
---------- CHICAGO ----------
Hauber, M.E., Kacelnik, A., DeVoogd, T.J., Clayton, N.S., Reboreda, J.C. "Sexual dimorphism and species differences in HVC volumes of cowbirds" . Behavioral Neuroscience 113, no. 5 (1999) : 1095-1099.
http://dx.doi.org/10.1037/0735-7044.113.5.1095
---------- MLA ----------
Hauber, M.E., Kacelnik, A., DeVoogd, T.J., Clayton, N.S., Reboreda, J.C. "Sexual dimorphism and species differences in HVC volumes of cowbirds" . Behavioral Neuroscience, vol. 113, no. 5, 1999, pp. 1095-1099.
http://dx.doi.org/10.1037/0735-7044.113.5.1095
---------- VANCOUVER ----------
Hauber, M.E., Kacelnik, A., DeVoogd, T.J., Clayton, N.S., Reboreda, J.C. Sexual dimorphism and species differences in HVC volumes of cowbirds. Behav. Neurosci. 1999;113(5):1095-1099.
http://dx.doi.org/10.1037/0735-7044.113.5.1095