Revue: | Anais da Academia Brasileira de Ciencias |
Base de datos: | PERIÓDICA |
Número de sistema: | 000372390 |
ISSN: | 0001-3765 |
Autores: | Nadia, Tarcila L1 Machado, Isabel C2 |
Instituciones: | 1Universidade Federal de Pernambuco, Centro Academico de Vitoria, Vitoria de Santo Antao, Pernambuco. Brasil 2Universidade Federal de Pernambuco, Centro de Ciencias Biologicas, Recife, Pernambuco. Brasil |
Año: | 2014 |
Periodo: | Mar |
Volumen: | 86 |
Número: | 1 |
Paginación: | 229-238 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Analítico, descriptivo |
Resumen en inglés | Rhizophora mangle is considered as a self-compatible mangrove, and is pollinated by wind and insects. However, there is no information about fruit production by autogamy and agamospermy and on the foraging behavior of its flower visitors. Hence, the present study analyzed the pollination and reproductive systems of R. mangle in a mangrove community in northern Pernambuco, Brazil. Floral morphology, sequence of anthesis, and behavior of flower visitors were described; the proportion of flowers that resulted in mature propagules was also recorded. Autogamy, agamospermy, and wind pollination tests were performed, and a new anemophily index is proposed. The flowers of R. mangle are hermaphrodite, protandric, and have high P/O rate. Flies were observed on flowers only during the male phase, probably feeding on mites that consume pollen. Rhizophora mangle is not agamospermic and its fruit production rate by spontaneous self-pollination is low (2.56%) compared to wind pollination (19.44%). The anemophily index was high 0.98, and thus it was considered as a good indicator. Only 13.79% of the flowers formed mature propagules. The early stages of fruit development are the most critical and susceptible to predation. Rhizophora mangle is, therefore, exclusively anemophilous in the study area and the propagule dispersal seems to be limited by herbivory |
Disciplinas: | Biología |
Palabras clave: | Angiospermas, Ecología, Reproducción y desarrollo, Indice de anemofilia, Autogamia, Entomofilia, Manglares, Mangle rojo |
Keyword: | Biology, Angiosperms, Ecology, Reproduction and development, Anemophily index, Autogamy, Entomophily, Mangrove, Red mangrove |
Texte intégral: | Texto completo (Ver PDF) |