Temporal variations in the feeding of the endangered Neotropical fish Brycon orthotaenia (Characiformes: Bryconidae) in the middle São Francisco River |
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| Authors: | Bruno Eleres Soares Renata Bartolette Daniela Cristina Oliveira Rosa Danielle Antunes Beserra Miriam Pilz Albrecht Marcelo Fulgêncio Guedes Brito |
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| Institution: | 1. Laboratório de Ecologia de Peixes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil;2. Programa de Pós-Gradua??o em Ecologia (PPGE), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazilsoares.e.bruno@gmail.com;4. Laboratório de Ictiologia, Universidade Federal de Sergipe (UFS), S?o Cristóv?o, Brazil;5. Programa de Pós-Gradua??o em Ecologia (PPGE), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil;6. Programa de Pós-Gradua??o em Ecologia (PGECOL), Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, Brazil;7. Programa de Pós-Gradua??o em Ecologia e Conserva??o (PPEC), Universidade Federal de Sergipe (UFS), S?o Cristóv?o, Brazil |
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| Abstract: | We analyzed the diet and seasonal variation in diet composition of Brycon orthotaenia, an endangered and endemic species of the São Francisco River Basin, in the middle stretch of the São Francisco River. Brycon orthotaenia had an herbivorous diet, with occasional consumption of animals, mainly in the dry season. Variation among dry and wet seasons in diet composition may be related to the species’ reproduction and energy allocation, since some items (e.g. insects, fishes) may support gonadal development. |
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| Keywords: | Diet Characiformes endemic herbivorous São Francisco basin |
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