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Feeding ecology of the Ruivaco Achondrostoma oligolepis, a Portuguese endemic cyprinid fish

 

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Opened Access Feeding ecology of the Ruivaco Achondrostoma oligolepis, a Portuguese endemic cyprinid fish
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Author: Santos, J. M.
Encina Encina, Lourdes
Oliveira, João M.
Teixeira, Amílcar
Department: Universidad de Sevilla. Departamento de Biología Vegetal y Ecología
Date: 2013
Published in: Limnetica, 32 (1), 27-38.
Document type: Article
Abstract: This study assessed the feeding ecology of the ruivaco Achondrostoma oligolepis, a Portuguese endemic resident cyprinid fish whose dietary habits are virtually unknown. Samples were taken seasonally in three medium-sized rivers representing a gradient of temporality. The stomach contents of 97 individuals (42-126 mm total length, TL) were analysed. Although there was no significant overall variation in diet composition between rivers, differences were found among seasons. A broad range of food categories was identified, although a smaller subset of primarily detritus (77.6 %) and plant material (18.4 %) constituted the base diet. Of the animal prey, Coleoptera and Diptera were the most prevalent, occurring in 13.2 % and 9.8 % of the fish, respectively, and were consumed mainly in the spring. Based on the observed diet composition and feeding strategy, the ruivaco could be considered a generalist, foraging on the most abundant and available prey Este estudio evaluó la ecología alimentaria del ruivaco (Achondrostoma oligolepis), un ciprínido endémico de Portugal cuyos hábitos alimenticios son prácticamente desconocidos. Las muestras fueron recogidas estacionalmente, en tres ríos medianos r...
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Cite: Santos, J.M., Encina Encina, L., Oliveira, J.M. y Teixeira, A. (2013). Feeding ecology of the Ruivaco Achondrostoma oligolepis, a Portuguese endemic cyprinid fish. Limnetica, 32 (1), 27-38.
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URI: http://hdl.handle.net/11441/43569

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