Abstract
This study was conducted at Lake Small Abaya Ethiopia, to identify Clinostomum and Contracaecum parasites from a total of 384 O. niloticus species sampled during November 2013- April 2014. Of the 384 samples collected, 138 (35.9%) were infested with nematode of Contracaecum species and 72 (18.8%) were infected with trematode of Clinostomum species. The intensity of infestation by Contracaecum and Clinostomum was 1-19 worms per fish (mean intensity=4.47) and 1-12 worms per fish (mean intensity=3.56) respectively. There was no significant difference (p>0.05) in the prevalence of infestation among host sex, host size and host weight. There was no any statistically significant (p>0.05) correlation between the number of Clinostomum, Contracaecum and the mixed number of parasites and the fish’s condition. In conclusion, the study show that fish parasite are prevalent in Small Abaya lake .Hence, further studies and appropriate control measure are recommended to reduce their effect on the fishery industry and public health.
Highlights
Ethiopia has large water resources, with an estimated surface area of 733k km2 of major lakes and reservoirs, 275 km2 of small water bodies and 7285 km long rivers within the country [1]
As a result of these ecological variations, Ethiopia has been the home of highly diversified flora and fauna
More than 200 species of fish are known to occur in lakes, rivers and reservoirs in Ethiopia [2]
Summary
Ethiopia has large water resources, with an estimated surface area of 733k km of major lakes and reservoirs, 275 km of small water bodies and 7285 km long rivers within the country [1]. As a result of these ecological variations, Ethiopia has been the home of highly diversified flora and fauna. More than 200 species of fish are known to occur in lakes, rivers and reservoirs in Ethiopia [2]. The country depends on its inland water bodies for fish supply to its population. As a consequence of its natural occurrence plus its introduction into different water bodies, it is contributing about 40.9 % of the 13,253 tons of commercial fish catch in 2007/2008 [3]
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