Feeding ecology of the catfish Ictalurus punctatus (Siluriformes: Ictaluridae) in a reservoir in Northeast Mexico

Objective: Determine the main food components of catfish, their seasonal variability and according to sex organism. Methodology: In total, 143 stomachs catfish were examined. analysis stomach content, detected organisms determined until taxonomic order rank. It was analyzed feeding variability. Results: The total annual trophic spectrum for consisted 13 items, which only Ephemeroptera reached category as a frequent food. winter season consumed significantly more compared other seasons there no difference in amount by females males (p>0.05). Implications: This information is relevant highlight importance biological integrity terrestrial site surrounds reservoir, source catfish. Conclusions: Catfish channel Venustiano Carranza Dam generalist species (13 alimentary items). There between year; however sexes.