Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds
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...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09594965_v7_n2_p505_Reboreda |
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todo:paper_09594965_v7_n2_p505_Reboreda2023-10-03T15:53:01Z Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds Reboreda, J.C. Clayton, N.S. Kacelnik, A. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09594965_v7_n2_p505_Reboreda |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Reboreda, J.C. Clayton, N.S. Kacelnik, A. Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Reboreda, J.C. Clayton, N.S. Kacelnik, A. |
| author_facet |
Reboreda, J.C. Clayton, N.S. Kacelnik, A. |
| author_sort |
Reboreda, J.C. |
| title |
Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| title_short |
Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| title_full |
Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| title_fullStr |
Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| title_full_unstemmed |
Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| title_sort |
species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
| url |
http://hdl.handle.net/20.500.12110/paper_09594965_v7_n2_p505_Reboreda |
| work_keys_str_mv |
AT reboredajc speciesandsexdifferencesinhippocampussizeinparasiticandnonparasiticcowbirds AT claytonns speciesandsexdifferencesinhippocampussizeinparasiticandnonparasiticcowbirds AT kacelnika speciesandsexdifferencesinhippocampussizeinparasiticandnonparasiticcowbirds |
| _version_ |
1807316021353119744 |