Diet of Lontra longicaudis em um sistema de pocoes na Floresta Atlantica do Estado de Minas Gerais, sudeste do Brasil
The present study aimed to investigate the feeding habits of Lontra longicaudis in a pool system within the Private Reserve of Natural Patrimony (RPPN) Usina Mauricio, located in Paraiba do Sul river basin, Atlantic Forest of southeastern Minas Gerais State. The diet composition was determined based...
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Veröffentlicht in: | Acta scientiarum. Biological sciences 2012-10, Vol.34 (4), p.407 |
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Sprache: | spa |
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Zusammenfassung: | The present study aimed to investigate the feeding habits of Lontra longicaudis in a pool system within the Private Reserve of Natural Patrimony (RPPN) Usina Mauricio, located in Paraiba do Sul river basin, Atlantic Forest of southeastern Minas Gerais State. The diet composition was determined based on the identification of items present in 212 scats sampled between July 2008 and October 2009 in a 4.1 km stretch of the pool system. The found items and its respective percentages of occurrence were: mollusks (0.5%), insects (16.5%), spiders (1.4%), crustaceans (3.3%), fish (96.7%), amphibians (0.9%), snakes (3.8%), birds (2.8%), mammals (8.5%) and fruits (0.5%). Among fish, the identified families and respective percentages of occurrence were: Loricariidae (65.4%), Pimelodidae (42.9%) Cichlidae (22%), Characidae (7.3%), Erythrinidae (3.9%), Synbranchidae (2.4%), Anostomidae (2%). Therefore fish make up the most consumed item in the study area, with the predominance of benthic siluriformes (families Loricariidae and Pimelodidae). Keywords: neotropical otter, feeding habits, Loricariidae, Pimelodidae, Zona da Mata. O presente estudo teve como objetivo investigar os habitos alimentares de Lontra longicaudis em um sistema de pocoes na Reserva Particular do Patrimonio Natural--RPPN Usina Mauricio, localizada na bacia do rio Paraiba do Sul, Mata Atlantica do Sudeste do Estado de Minas Gerais. A composicao da dieta foi determinada com base na identificacao de itens presentes em 212 amostras de fezes coletadas entre julho de 2008 e outubro de 2009 em um trecho de 4,1 km de um sistema de pocoes. Os itens alimentares encontrados e suas respectivas porcentagens de ocorrencia foram: moluscos (0,5%), insetos (16,5%), aranhas (1,4%), crustaceos (3,3%), peixes (96,7%), anfibios (0,9%), serpentes (3,8%), aves (2,8%), mamiferos (8,5%), frutos (0,5%). Dentre os peixes, familias identificadas e suas respectivas porcentagens de ocorrencia foram: Loricariidae (65,4%), Pimelodidae (42,9%) Cichlidae (22%), Characidae (7,3%), Erythrinidae (3,9%), Synbranchidae (2,4%), Anostomidae (2%). Os peixes, portanto, representaram o item mais consumido na area de estudo, com predominancia de siluriformes bentonicos (familias Loricariidae e Pimelodidae). Palavras-chave: lontra neotropical, habitos alimentares, Loricariidae, Pimelodidae, Zona da Mata. |
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ISSN: | 1679-9283 |
DOI: | 10.4025/actascibiolsci.v34i4.10332 |