Trophic ecology of fish ocurring in aquatic macrophytes stands in the bay Caiçara, Pantanal Mato-Grossense, Brazil

Abstract

The present research characterized the diet of fish and determined the trophic guilds of ichthyofauna residence of aquatic macrophytes stands. The sampling were carried out through a trap with mesh size of 3mm under stands of aquatic macrophytes of two portions of bay Caiçara, Pantanal Mato-Grossense. Species diet was determined through analysis of stomach contents, using frequency of occurrence and volumetric methods, being expressed by the Alimentary Index (IAi). Only eighteen fish species, of the sixty five captured, have their diet characterized. Five species were considered herbivorous, four insectivorous, four omnivorous, three carnivorous and two detritivorous.