Infections of Oreochromis Niloticus from an Impoundment in Kano Metropolis

Abstract

Infections of Oreochromis niloticus was studied in an impoundment in the Kano Metropolis in 2012 for period of 3 months to better understand the parasite fauna occurrence, distribution and diversity. A total of 165 fish species of Oreochromis niloticus were collected at the site, using routine bacteriological and parasitological techniques. Histopathological change in fish tissue was investigated due to bacteria and parasite. The survey yielded 72 (43.63%) Flavobacterium spp., & 19 (11.52%) comprising of ecto and endo parasites trematodes (Digenean); Clinostomum both adult and encysted (metacercariae) in the body cavity and leeches. The Bacteria isolated from gills showed typical necrosis and the presence of brown to yellowish-brown colour on the gills’ filament. The isolated Bacterium is suspected to be opportunistic causing secondary infection. It could be finally concluded that about 91 (55.15%) Oreochromis niloticus of Dan Agundi impoundment were infected by trematodes, leeches and Flavobacterium. This calls for raising awareness in fish health management among potential farmers/fishers, consumers, service providers and researchers.

DOI: 10.5901/ajis.2014.v3n5p73