Seed predators insects of Cassia leptophylla and the relation between the periods pre and post-dispersive
This study determined which species of insects prey on the seeds of Cassia leptophylla during the pre and post-dispersive period, in a conservation area located in the Reserve of Iguaçu, Paraná, Brazil. Parameters of abundance and seasonality, and seed predation were evaluated with two hypothe- ses...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | Brasil |
| Institución: | Universidade Federal de Goiás (UFG) |
| Repositorio: | Revista de Biologia Neotropical (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.revistas.ufg.br:article/28302 |
| Acceso en línea: | https://revistas.ufg.br/RBN/article/view/28302 |
| Access Level: | acceso abierto |
| Palabra clave: | Bruchinae insect-plant interactions seasonality Tortricidae interação inseto-planta sazonalidade Interação inseto-planta junto a predação de sementes |
| Sumario: | This study determined which species of insects prey on the seeds of Cassia leptophylla during the pre and post-dispersive period, in a conservation area located in the Reserve of Iguaçu, Paraná, Brazil. Parameters of abundance and seasonality, and seed predation were evaluated with two hypothe- ses being presented: the seed predation by insects is continuous during both dispersive periods; the same guild of insects performs predation. Three species were found preying on seeds of C. leptophylla; pre-dispersion Pygiopachymerus lineola, Sennius leptophyllicola and Cydia tonosticha. There was the exception of the presence of S. leptophyllicola from post-dispersal. The result shows the importance of food resource provided by the seed, for predatory insects, which preyed on 42 % of the viable seeds at the end of a cycle of fruiting plant. The differences in the abundance of individuals between the disper- sive periods probably relate to bionomic intrinsic and ecological characteristics, with the possibility to emphasize greater specialization of species with respect to the ability to exploit different niches. |
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