Isolation, identification and prevalence of parasites on Oreochromis niloticus from three selected river systems
The prevailence of protozoan and helminthic parasite species occurring on and in the internal organs of Oreochromis niloticus were studied. Twenty samples of a mixture of adult and juvenile individuals of Oreochromis niloticus were randomly obtained from fishermen landing at the jetties of Epe water side, Ikorodu (Odoguyan) river and a brackish water (makoko), between September and and October, 2009, during a period of low rainfall. Samples were eviscerated and the parasites were excised, identified and each specie of parasites was counted. Most of the parasites encountered were of the Protozoa, manogenea, Digenea, Cestoda and Nematoda groups. The infestation was predominantly by Nematoda species and followed by protozoan species. Protozoan parasites like Trichodina sp and Ichyobodo sp were found to be prevalent, in varying magnitude, in most of the fish samples without clear age discrimination. The study reveals that the prevailence of parasites infestation increases with increasing length, size and age of the fish host and different pars of the fish.
| Main Authors: | , , |
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| Format: | conference_item biblioteca |
| Language: | English |
| Published: |
FISON
2010
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| Subjects: | Ecology, Fisheries, Oreochromis niloticus, Nigeria, Epe, Ikorodu, Ogun R., freshwater environment, Parasites, Identification, |
| Online Access: | http://hdl.handle.net/1834/38150 |
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