Hábito alimentar de espécies de peixes na área de influência do emissário oceânico de Fortaleza, Ceará, Brasil

Abstract

Knowledge of food is the first step in understanding the trophic relationships of species, but anthropic interference can cause changes in the behavior and diet of these individuals. This study aims to detect possible changes in the eating habits of fish in the area of ​​influence of the Oceanic Disposal System of Sanitary Sewers in Fortaleza - SDOES. The collection was carried out in January 1999, using bottom trawls. Food items were identified qualitatively (organic or inorganic matter and their state of conservation). Fifty specimens for this study were analyzed, predominantly juveniles, belonging to 18 species, 17 genera and 10 families, material is listed in the Ichthyological Collection of the Federal University of Ceará. Some species, such as Larimus breviceps, showed particularities in their stomach contents with all the specimens examined showing only crustacean eyes inserted in a digestive paste. In Conodon nobilis, ctenoid scales were the most abundant item. Among the animals analyzed, crustaceans were the main food item, followed by mineral compost, polychaetes and algae.