Diversity and degree of organization of the Ichthyofauna of two branches of the Bandama river in the Marahoue region (Central West of Côte D’Ivoire)

Diversity and Degree of organization the ichthyological population two tributaries Bandama River in Marahoue region located center-west Côte d'Ivoire were studied. Indeed, that are White Rivers draining this subject to numerous disturbances, main one being gold panning. Data collection was conducted from September 2019 November 2020 experimental artisanal fisheries. The mesh sizes gillnets used for fishery varied 10 40 mm size. results showed a dominance order Siluriformes represented by 6 families 18 species against 4 13 River. Also, Shannon Index (H') values obtained (H' fluctuates 2.26 2.33 bits/ind) lower than those 3.02 3.14 bits/ind). Our also highlighted equitability. This index appeared relatively high (E varies 0.77 0.80) compared 0.5 0.57). Consequently, appears be more stable has good degree