Atividade de forrageamento de Triportheus spp. (Characidae, Triportheinae) utilizada como ferramenta de amostragem da entomofauna, na área do reservatório de Manso, MT

RESUMO

Fishes are very good exploiter of the aquatic environment that have, sometimes, unavailable organisms to sampling gears. Considering that the fishes feed on the most abundant and available items, the purpose of this work was to verify the abundance and the seasonal variations of thedifferent insect taxons in the area of the Manso Reservoir, MT, through the diet of Triportheus nematurus (n=96) and Triportheus paranensis (n=190). We recorded 11 orders represented by adults and larval stages of aquatic and terrestrial insects, mainly of the orders Diptera, Hymenoptera, Coleoptera, Hemiptera and Isoptera. In despite of the small sample size, it was possible to verify ahigh diversity of insects in the Manso Reservoirs area and to highlight the importance of this group as food for the fish community.