<b>Specific composition and abundance of the ichthyofauna from Padres’ river, Iguaçu river basin, Brazil</b> - DOI: 10.4025/actascibiolsci.v28i3.193

Abstract

The composition and structure of fish community can be considered ecological and environmental indicators. The present study aimed to survey information about the specific composition and abundance of the ichthyofauna from Padres’ River. Quarterly samplings were accomplished by the method of the electrofishing in two sample sites, one close to the headwater and another in the proximities of the mouth. The collections resulted in the capture of 7026 specimens belonging to 12 species, which, in turn, fit in seven different families. The headwater presented a high density in number of individuals and smaller values of diversity, evenness and richness of species in relation to the mouth. The raising of the specific composition and abundance of the ichthyofauna of a river is of great importance for supplying subsidy to future managements and accompaniment, as much of the aquatic community as of the environment.