DIET OF Ageneiosus ucayalensis (CASTELNAU, 1855) (OSTEICHTHYES: AUCHENIPTERIDAE) IN COARACY NUNES RESERVOIR, FERREIRA GOMES, AMAPÁ, BRAZIL

• Autor(a) principal: Sá-Oliveira, Júlio César
• Data de Publicação: 2014
• Outros Autores: Peixoto Maciel, Anaytatyana Góes, Araujo, Andrea Soares de, Isaac-Nahum, Victoria Judith
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biota Amazônia
• Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/963

The aim of this study was to analyze the diet of Ageneiosus ucayalensis from Reservoir Hydroelectric Plant Coaracy Nunes, in Ferreira Gomes / AP. Samples were collected bimonthly in three sampling stations in the reservoir between July / 2009 and July / 2010. Samplings were conducted using gillnets, organized in batteries each with seven networks and different distances between us. After capture, were performed specimens biometrics and their stomachs removed, fixed and stored for laboratory analysis. The sex ratio was performed in order to determine whether there was significant difference between the sexes. Food items of stomach contents were grouped into broad categories and analyzed by the methods of frequency of occurrence and volume, combined in Alimentary Index (IAI). The results showed that the sex ratio was 1: 1, with a slight predominance of females. As for food, the species proved to be carnivorous, with a diet based primarily on microcrustaceans, crustaceans, fish and unidentifiable material. Seasonal variations in diet were not clear and probably are related both to the availability of prey in the area as the manipulation of the water level of the reservoir by the control gates.Keywords: Feed; HPP; fish; Siluriformes; IAi.