Botelho M L L A, Gomiero L M, Braga F M S
Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, 13506-900, Brazil.
Braz J Biol. 2007 Nov;67(4):741-8. doi: 10.1590/s1519-69842007000400022.
We describe the diet of Oligosarcus hepsetus, in the Santa Virgínia Unit of the Serra do Mar State Park. The Paraibuna and Grande rivers in the basin of the Paraíba do Sul River were sampled monthly from January to December 2004. The Alimentary Preference Degree and the frequency of occurrence indices were used to analyze the food items. The diets of Oligosarcus hepsetus in the two localities sampled were very similar, and reinforced the importance of the streamside forests in establishing and maintaining biotic and abiotic conditions in these environments. The species had a carnivorous diet that differed with ontogeny: smaller individuals were principally insectivorous and larger ones ichthyophagous.
我们描述了在马拉山国家公园圣维吉尼亚单元的赫氏低线脂鲤的食性。2004年1月至12月，每月对南帕拉伊巴河流域的帕拉伊布纳河和格兰德河进行采样。采用食物偏好度和出现频率指数来分析食物种类。在两个采样地点的赫氏低线脂鲤的食性非常相似，这强化了溪边森林在这些环境中建立和维持生物及非生物条件方面的重要性。该物种为肉食性，其食性随个体发育而不同：较小个体主要以昆虫为食，较大个体则以鱼类为食。
