Open AccessFeeding ecology of the catfish Ictalurus punctatus (Siluriformes: Ictaluridae) in a reservoir in Northeast Mexico
Author(s) -
Gabriel Fernando Cardoza Martínez,
Cristo A. Bojórquez-Moreno,
Alexander Czaja,
Jorge Luis Becerra-López,
Miguel Ángel Garza-Martínez,
Josué Raymundo EstradaArellano,
Julián CeranoParedes,
José Luís Estrada-Rodríguez,
Fernando Alonzo-Rojo
Publication year - 2021
Publication title -
agro productividad
Language(s) - English
Resource type - Journals
ISSN - 2594-0252
DOI - 10.32854/agrop.v14i6.1931
Subject(s) - catfish , ictalurus , biology , trophic level , generalist and specialist species , ecology , significant difference , zoology , ictaluridae , fishery , fish <actinopterygii> , habitat , statistics , mathematics
Objective: Determine the main food components of the catfish, their seasonal variability and according to the sex of the organism. Methodology: In total, 143 stomachs of catfish were examined. In the analysis of the stomach content, the detected organisms were determined until the taxonomic order rank. It was analyzed the seasonal and sex feeding variability. Results: The total annual trophic spectrum for catfish consisted of 13 items, of which only the order Ephemeroptera reached the category as a frequent food. In the winter season the catfish consumed significantly more food compared to the other seasons and there was no difference in the amount consumed by females and males (p>0.05). Implications: This information is relevant to highlight the importance of the biological integrity of the terrestrial site surrounds the reservoir, which is a source of food for the catfish. Conclusions: Catfish channel in the Venustiano Carranza Dam is a generalist species (13 alimentary items). There was a difference in the amount of food consumed between the seasons of the year; however there was no difference between the sexes.