Maseno University Repository

Some pathological changes in Nile Tilapia and Nile Perch from Lake Victoria.

Show simple item record

dc.contributor.author PW Kamundia, RH Byarugaba, RO Otieno
dc.date.accessioned 2020-11-19T05:55:22Z
dc.date.available 2020-11-19T05:55:22Z
dc.date.issued 2010
dc.identifier.uri https://repository.maseno.ac.ke/handle/123456789/2841
dc.description.abstract Gross and microscopic lesions especially those associated with pollutants were investigated in Nile tilapia (Oreochromis niloticus) and Nile perch (Lates niloticus) from Lake Victoria. A total of 104 live fish were bought from fishermen from Homa Bay and Suba districts. During post mortem examination, lesions observed were recorded; and kidney, gills, liver, spleen, heart, stomach, intestine and gonadal tissues taken and preserved in 10% buffered formalin for histological processing. Gross lesions observed were hyperemia, hemorrhages in various tissues; skin ulcers, eye opacity; cooked liver appearance, fibrosis, gray spots and bile imbibitions; atrophied and cystic gonads; and fish skeletal deformity. Histological lesions were gill aneurysms, kidney tubular lumen occlusions, increased melanomacrophage aggregation in the liver, kidney and spleen; liver sinusoidal hemorrhages, fatty degeneration, hepatocytes‟ vacuolations, necrosis, bile stasis and granulomas; kidney granulomas; testicular and ovarian degeneration and cysts; myocarditis and myositis. The liver had majority lesions that were severe in both fish species. These lesions can be caused by variable aetiologies, including pollutants. In all, 63% of the Oreochromis niloticus and 58% Lates niloticus had histological lesions. Further studies are required to establish the cause of the lesions. en_US
dc.publisher University of Nairobi, Kenya en_US
dc.title Some pathological changes in Nile Tilapia and Nile Perch from Lake Victoria. en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search Maseno University Repository


Browse

My Account