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Un releve parasitaire a ete realise en 2016 afin de mieux comprendre la presence, la repartition et la diversite de la faune parasitaire chez les especes piscicoles commerciales, Clarias gariepinus et Oreochromis niloticus provenant des whedos du delta superieur de l'Oueme au sud du Benin. L’echantillonnage a ete realise dans les trois communes du haut delta de l’Oueme (Bonou, Ouinhi, Zagnanado). Trente whedos artificiels ont ete selectionnes a raison de dix par commune. Un total de 757 poissons (417 C. gariepinus et 340 Oreochromis niloticus ) ont ete collectes durant les deux periodes de crue et de decrue du fleuve Oueme et ont ete examines pour des parasites en utilisant des techniques parasitologiques de routine. Onze (11) taxons parasites ont ete observes chez les deux especes hotes : 6 taxons sont presents chez Oreochromis niloticus et 7 chez Clarias gariepinus . Deux taxons, Clinostomum sp. et Gryporhynchidae, sont observes chez les deux especes hotes. La parasitofaune de O. niloticus est dominee par des taxons a transmission par stade libre, tandis que les parasites a transmission par stade libre et les parasites a transmission trophique sont egalement representes chez C. gariepinus . Les branchies sont tres faiblement parasitees, mais fortement par des monogenes. L'intestin est fortement parasite, principalement par les nematodes et les trematodes. En general, l'occurrence et la diversite des parasites chez ces especes de poissons mettent en evidence la probabilite d'une resurgence de pathologies dans les systemes aquacoles etudies. Ceci appelle a une sensibilisation des agriculteurs, des pisciculteurs, des fournisseurs de services et des chercheurs pour une meilleure gestion de la sante des poissons. © 2019 International Formulae Group. All rights reserved Mots cles: Metazoaires parasites, Clarias gariepinus , Oreochromis niloticus , Whedos, Sud Benin English Title:  Metazoan parasite fauna of Clarias gariepinus (Clariidae) and Oreochromis niloticus (Cichlidae), two fishes from whedos around the upper delta of Oueme river in southern Benin English Abstract An intensive parasite survey was conducted in 2016 to get more information the occurrence of parasite fauna, its distribution and diversity in the commercial cultured fish species, Clarias gariepinus and Oreochromis niloticus , from whedos of Oueme upper delta in south Benin. Sampling was carried out in the three communes of the upper delta of Oueme (Bonou, Ouinhi, Zagnanado). Thirty artificial whedos were selected at the rate of ten per commune. A total of 757 fish (417 C. gariepinus and 340 O. niloticus) were collected during flood and recession periods of Oueme river and were examined for parasites using routine parasitological technics.The survey yielded 11 parasite taxon: 6 from Oreochromis niloticus and seven from Clarias gariepinus . Two taxon, Clinostomum sp. and Gryporhynchidae, were both parasites of the two fish hosts. O. niloticus was dominated by free-living stage-transmitted parasites, whereas both trophically and free-living stage-transmitted parasites were represented in C. gariepinus in relatively high intensities. Gills were generally less parasitized, but heavily by monogeneans. The gut was highly parasitized principally by nematodes and trematodes. Generally, the occurrence and diversity of parasites in these fish species highlight the likelihood of disease outbreak in the proposed aquaculture systems. This calls up to raise awareness in fish health management among potential farmers, service providers and researchers. © 2019 International Formulae Group. All rights reserved Keywords: Metazoan parasites, Clarias gariepinus , Oreochromis niloticus , Whedos, southern Benin

international journal of biological and chemical sciences

Faune des métazoaires parasites de &lt;i&gt;Clarias gariepinus&lt;/i&gt; (Clariidae) et de &lt;i&gt;Oreochromis niloticus&lt;/i&gt; (Cichlidae), deux poissons des whédos du delta supérieur du fleuve Ouémé au sud du Bénin