Macrofauna associada a um cultivo semi-intensivo de Litopenaeus vannamei (Boone, 1931) no estuário da Lagoa dos Patos (sul do Brasil)

Abstract

2 ) compared to natural environment (6spp. and 40 ind./0.008m 2 ). However, the biomass values at sedimentary basin (mean = 0.06 g/0.008m 2 ) were twice higher than natural environment. At pond, low richness of macrofauna seems related to absence of previous pond preparation; while shrimp predation and/or disturbance resulting in low densities after begin of culture. Otherwise, the presence of a biota relatively abundant and with high biomass at sedimentary basin could contribute to increase effluent quality of the shrimp farm.