Production and specific diversity of fish at the level of the Taabo dam lake (Ivory Coast, West Africa)

Abstract

The management of fishery resources is a concern for managers of the fishing sector. The insufficiency of statistics in this sector is an obstacle to the sustainable management of fish. This study aimed at determining the fishing techniques, production and biological indices that characterize fishing in Taabo Lake. Data was collected from July 2019 to June 2020 in the Taabo-village station from surveys and analysis of fishermen's catches. Each identified specimen was weighed. The results of the study indicate seven fishing gears including conical fishing basket, castnets and gillnets with meshes smaller than the regulatory mesh. Purse seines and bamboo traps were specifically more selective (1 species). The seines have the annual catches (23,140 kg); CPUE (14.51 kg / exit); highest utilization (29%) and performance (46%) rates. An annual effort of 5501 fishing / trips for 50334.3 kg of fish caught characterized the fishing on Taabo Lake. This production is made up of 44 species belonging to 18 families. The Claroteidae family (47%) and the species Chrysichthys nigrodigitatus (46%) dominate the fish population of Taabo lake. This study provides our governments informations in their quest for the sustainable management of fishery resources.