N.F. Kouadio
Laboratoire dHydrobiologie, U.F.R. Biosciences, Universite de Cocody,
22 B. F. 582 Abidjan 22, Cote dIvoire
E.P. Kouamelan
Laboratoire dHydrobiologie, U.F.R. Biosciences, Universite de Cocody,
22 B. F. 582 Abidjan 22, Cote dIvoire
V. N` Douba
Laboratoire dHydrobiologie, U.F.R. Biosciences, Universite de Cocody,
22 B. F. 582 Abidjan 22, Cote dIvoire
T. Kone
Laboratoire dHydrobiologie, U.F.R. Biosciences, Universite de Cocody,
22 B. F. 582 Abidjan 22, Cote dIvoire
J. Snoecks
Royal Museum for Central Africa, Ichthyology Laboratory, B-3080 Tervuren, Belgium
F. Ollevier
Laboratory for Comparative Anatomy and Biodiversity, Katholieke Universiteit Leuven, Ch De Beriotstraat 32, B-3000 Leuven, Belgium
ABSTRACT
Fish community structure in relation with environmental variables was studied in the Mé River (Ivory Coast, West Africa). Fifty-four freshwater fish species belonging to 35 genera and 20 families were listed. Eight of these species were reported for the first time in this river, whereas fifteen species reported earlier were not found in the present sampling campaign. Fourteen species are found exclusively in the upstream versus three species for the lower stream. Thirty-seven species are common to both sampling areas. The present findings are opposed to the tendency for species composition to increase from the source to the mouth of the river, which is probably due to a major human activity: the exploitation of a gravel pit. Among fish families sampled, Cyprinidae and Alestidae are more abundant, respectively in the upper and lower courses. Significant correlation between species distribution and environmental variables was found. Aquatic plants, canopy closure, conductivity, dissolved oxygen, mixed deadwoods-leaves-rocks, temperature and width are the main environmental variables influencing fish distribution in the Mé River.
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How to cite this article
N.F. Kouadio, E.P. Kouamelan, V. N` Douba, T. Kone, J. Snoecks and F. Ollevier, 2006. Update of Fish Biodiversity and Impact of Human Activities on the Community Structure, Mé River (Ivory Coast). Journal of Biological Sciences, 6: 805-814.
DOI: 10.3923/jbs.2006.805.814
URL: https://scialert.net/abstract/?doi=jbs.2006.805.814
DOI: 10.3923/jbs.2006.805.814
URL: https://scialert.net/abstract/?doi=jbs.2006.805.814
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