This study provides an updated list of parasite species and their respective hosts in the upper Paraná River floodplain. The list of parasites is structured by phylum, class, order and family, ...

The structure of the fish communities of a pool and a rapid in the ribeirão Santa Bárbara is described. This stream of 5th order is a direct tributary of the rio Tietê in the system of the upper rio ...

Fish communities on the island of Trinidad provide a forum for evaluating the life history consequences of the direct and indirect effects of predation. A killifish, Rivulus hartii, exhibits a greater ...