Tempo de passagem de sementes pelo trato digestório de aves frugívoras, uma primeira avaliação no Brasil
The transit time of seeds ingested by frugivorous animals has important implications for the spatial distribution of seeds and their dispersal distance. Nevertheless, this parameter is rarely included in seed dispersal studies. In this paper, we provide information about the transit time of seeds of...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Brasil |
| Recursos: | Universidade Estadual Paulista (UNESP) |
| Repositorio: | Repositório Institucional da UNESP |
| Idioma: | inglés portugués |
| OAI Identifier: | oai:repositorio.unesp.br:11449/73220 |
| Acesso em linha: | http://www.ararajuba.org.br/sbo/ararajuba/artigos/Volume201/volume201.htm http://hdl.handle.net/11449/73220 |
| Access Level: | acceso abierto |
| Palavra-chave: | Frugivory GPT Seed dispersal Seed size Turdidae assessment method bird developmental biology frugivory seed dispersal seed size spatial distribution species diversity Brazil Animalia Aves Saltator similis Stephanophorus diadematus Turdus Turdus albicollis Turdus amaurochalinus Turdus leucomelas Turdus rufiventris |
| Resumo: | The transit time of seeds ingested by frugivorous animals has important implications for the spatial distribution of seeds and their dispersal distance. Nevertheless, this parameter is rarely included in seed dispersal studies. In this paper, we provide information about the transit time of seeds of nine species of plants ingested by individuals of six species of captive birds (Turdus albicollis, T. amaurochalinus, T. leucomelas, T. rufiventris, Stephanophorus diadematus and Saltator similis). We found that (1) seeds are regurgitated quickly through the digestive tract of birds than defecated seeds, and (2) large seeds (e.g., > 5 mm in diameter for Turdus spp.) are regurgitated rather than defecated. These results corroborate other studies, but the relationship between seed size and transit time seems to be quite complex and variable, requiring more detailed studies on this important aspect of the ecology of seed dispersal and digestive physiology of frugivorous birds. |
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