Seasonal changes of hippocampus volume in parasitic cowbirds
Avian brain plasticity has been demonstrated by seasonal variations in neuroanatomy correlated with changes in singing and hoarding behaviour. We report a new instance of plasticity. Brood parasitism in South American cowbirds involves memory for location of hosts' nests, and is associated with...
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1997
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v41_n3_p237_Clayton http://hdl.handle.net/20.500.12110/paper_03766357_v41_n3_p237_Clayton |
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paper:paper_03766357_v41_n3_p237_Clayton2023-06-08T15:38:47Z Seasonal changes of hippocampus volume in parasitic cowbirds Brood parasitism Cowbirds Hippocampus Seasonal differences Spatial memory animal experiment article behavior bird brain size controlled study female hippocampus male nonhuman parasitism plasticity seasonal variation spatial memory Avian brain plasticity has been demonstrated by seasonal variations in neuroanatomy correlated with changes in singing and hoarding behaviour. We report a new instance of plasticity. Brood parasitism in South American cowbirds involves memory for location of hosts' nests, and is associated with an enlarged hippocampus relative to telencephalon size. This effect holds between sexes and species during the breeding season. We report that for two parasitic species, relative hippocampal volume is smaller during the non-breeding than the breeding season, and that sexual dimorphism present in summer in one of the species is not found in winter. These results support the hypothesis that the avian hippocampal formation shows neuroanatomical plasticity associated with seasonal changes in spatial memory demands. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v41_n3_p237_Clayton http://hdl.handle.net/20.500.12110/paper_03766357_v41_n3_p237_Clayton |
| 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 Cowbirds Hippocampus Seasonal differences Spatial memory animal experiment article behavior bird brain size controlled study female hippocampus male nonhuman parasitism plasticity seasonal variation spatial memory |
| spellingShingle |
Brood parasitism Cowbirds Hippocampus Seasonal differences Spatial memory animal experiment article behavior bird brain size controlled study female hippocampus male nonhuman parasitism plasticity seasonal variation spatial memory Seasonal changes of hippocampus volume in parasitic cowbirds |
| topic_facet |
Brood parasitism Cowbirds Hippocampus Seasonal differences Spatial memory animal experiment article behavior bird brain size controlled study female hippocampus male nonhuman parasitism plasticity seasonal variation spatial memory |
| description |
Avian brain plasticity has been demonstrated by seasonal variations in neuroanatomy correlated with changes in singing and hoarding behaviour. We report a new instance of plasticity. Brood parasitism in South American cowbirds involves memory for location of hosts' nests, and is associated with an enlarged hippocampus relative to telencephalon size. This effect holds between sexes and species during the breeding season. We report that for two parasitic species, relative hippocampal volume is smaller during the non-breeding than the breeding season, and that sexual dimorphism present in summer in one of the species is not found in winter. These results support the hypothesis that the avian hippocampal formation shows neuroanatomical plasticity associated with seasonal changes in spatial memory demands. |
| title |
Seasonal changes of hippocampus volume in parasitic cowbirds |
| title_short |
Seasonal changes of hippocampus volume in parasitic cowbirds |
| title_full |
Seasonal changes of hippocampus volume in parasitic cowbirds |
| title_fullStr |
Seasonal changes of hippocampus volume in parasitic cowbirds |
| title_full_unstemmed |
Seasonal changes of hippocampus volume in parasitic cowbirds |
| title_sort |
seasonal changes of hippocampus volume in parasitic cowbirds |
| publishDate |
1997 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v41_n3_p237_Clayton http://hdl.handle.net/20.500.12110/paper_03766357_v41_n3_p237_Clayton |
| _version_ |
1768543039443173376 |