Plankton Diversity in a Tropical Traditional Fish Farming “Whedos” in the Oueme River (Benin, West Africa) During an Experience of Compensatory Overeating Essay on Clarias gariepinus and Oreochromis niloticus

Abstract

The objective of this study is to assess the diversity of plankton community in a tropical traditional aquaculture system "whedos" in the Oueme river delta during experiences of compensatory overeating essay on Clarias gariepinus and Oreochromis niloticus. During this study, Planktonic organisms were collected between 16: 00 and 18: 30 on 12, 19 and 26 August 2014 in experimental and witness whedos. A total of 28 taxa of phytoplankton belonging to 4 phylums and 17 families were recorded during this study. Phytoplankton community recorded was marked by numerical dominance of Bacillariophyta and Chlorophyta, respectively 53.57% and 39.28% of total diversity. For the zooplankton, 29 taxa were registered, with numerical dominance of rotifer (15 taxa, 52% of zooplankton total diversity). Brachionidae family presented the highest diversity, with nine species belonging to three genera (Brachionus, Epiphanes and Keratella). Brachionus presents the most important diversity with six species, followed by Keratella (two taxa). Our study reveals that in plankton community, highest diversity was registered in whedo of compensatory overeating essay on Clarias gariepinus and Oreochromis niloticus while control whedo presented the lowest diversity