Partilha de Recursos Alimentares em Peixes em um Riacho de Serra do Sudeste do Brasil
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Data
1997-12-01
Autores
Uieda, Virginia Sanches [UNESP]
Buzzato, Patricia [UNESP]
Kikuchi, Regina Mayumi [UNESP]
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Resumo
We studied the diet and food resources partitioning by fishes from the Itaúna stream, municipality of Itatinga, Southeastern Brazil. Eighteen species of fish were collected, being Microlepidogaster sp., Hypostomus sp., Astyanax sp., Phalloceros caudimaculatus and Heptapterus sp. the most frequent and abundant ones. Regarding diet, the majority of the species were observed to be insectivorous (61%), while insectivorous-herbivorous and periphyton feeders ranked 22 and 17%, respectively. The food overlap analysis revealed many cases of similarity between the diets. For most cases, however, a detailed analysis of food items and spatial distribution of the species showed differences between the couples under analysis which points toward a reduction in competition for food.
Descrição
Palavras-chave
Diet overlap, Fish community, Food habits, Lotic habitat
Como citar
Anais da Academia Brasileira de Ciencias, v. 69, n. 2, p. 242-252, 1997.