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Abstract:

To test the hypothesis that selection for spatial abilities which require birds to locate and to return accurately to host nests has produced an enlarged hippocampus in brood parasites, three species of cowbird were compared. In shiny cowbirds, females search for host nests without the assistance of the male; in screaming cowbirds, males and females inspect hosts' nests together; in bay-winged cowbirds, neither sex searches because this species is not a brood parasite. As predicted, the two parasitic species had a relatively larger hippocampus than the non-parasitic species. There were no sex differences in relative hippocampus size in screaming or bay-winged cowbirds, but female shiny cowbirds had a larger hippocampus than the male.

Registro:

Documento: Artículo
Título:Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds
Autor:Reboreda, J.C.; Clayton, N.S.; Kacelnik, A.
Filiación:Instituto de Biologia y Medicina Experimental-CONICET, Obligado 2490, 1428 Buenos Aires, Argentina
Edward Grey Institute of Field Ornithology, Department of Zoology, University of Oxford, Oxford OXI 3PS, United Kingdom
Section of Neurobiology, Physiology and Behavior, Briggs Hall, University of California, Davis, CA 95616, United States
Palabras clave:brood parasitism; cowbirds; hippocampus; sex differences; spatial memory; animal experiment; animal tissue; article; bird; controlled study; female; hippocampus; histology; male; morphometrics; nonhuman; priority journal; sex difference; spatial memory
Año:1996
Volumen:7
Número:2
Página de inicio:505
Página de fin:508
DOI: http://dx.doi.org/10.1097/00001756-199601310-00031
Título revista:NeuroReport
Título revista abreviado:NEUROREPORT
ISSN:09594965
CODEN:NERPE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09594965_v7_n2_p505_Reboreda

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Citas:

---------- APA ----------
Reboreda, J.C., Clayton, N.S. & Kacelnik, A. (1996) . Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds. NeuroReport, 7(2), 505-508.
http://dx.doi.org/10.1097/00001756-199601310-00031
---------- CHICAGO ----------
Reboreda, J.C., Clayton, N.S., Kacelnik, A. "Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds" . NeuroReport 7, no. 2 (1996) : 505-508.
http://dx.doi.org/10.1097/00001756-199601310-00031
---------- MLA ----------
Reboreda, J.C., Clayton, N.S., Kacelnik, A. "Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds" . NeuroReport, vol. 7, no. 2, 1996, pp. 505-508.
http://dx.doi.org/10.1097/00001756-199601310-00031
---------- VANCOUVER ----------
Reboreda, J.C., Clayton, N.S., Kacelnik, A. Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds. NEUROREPORT. 1996;7(2):505-508.
http://dx.doi.org/10.1097/00001756-199601310-00031