Migração vertical nictemeral das larvas de Macrobrachium amazonicum num lago de várzea na Amazônia Central, Ilha do Careiro, Brasil

Abstract

Prawn larvae of Macrobrachium amazonicurn have been collected during six diel cycles in the epilimnion (surface and 2 m) from three different habitats of the Lago do Rei, Careiro Island. The larva1 distribution showed a singificant incrrase in density at 22 hours regardless of season or habitat, which suggests a diel vertical migration pattem.