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ABSTRACT
The limnetic and littoral zooplankton of Ikpoba River, one of the major freshwater bodies in Edo State, Nigeria was investigated at four stations for four months (April, June, July and August 2023) using the qualitative method of zooplankton collection technique. A total of 360 individuals comprising seven taxa were recorded, and the highest density was observed at Station 4 littoral zone (19.4%) followed by Station 4 limnetic zone (16.6%) while Station 3 littoral zone at the lowest density (7.7%) Stations 2 (25.0%). Copepoda represented by the family Cyclopoidae. Daphnidae and Bosminidae contributed 54.16% of the total density. The dominant species was the Alona spp. The Rotifers the least dominant group (8.3% of the population) was represented majorly by one taxon Lecane spp (90% of the rotifer population) which was represented in all the stations. The zooplankton assemblage was cosmopolitan and dominated by the cladocerans in terms of the number of species and overall abundance. The overall species composition of zooplankton in the littoral and limnetic zone was similar with no significant difference.