SURVEY OF HELMINTH PARASITES OF FISH IN EBONYI RIVER AT EHA- AMUFU, ENUGU STATE, NIGERIA

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Keywords: Gastrointestinal helminth, Labeo senegalensis, Auchenoglaris occidentalis, Synodontis clarias, Ebonyi River

Abstract

Gastrointestinal helminth parasites fauna of fish from Ebonyi River was investigated from
February to July 2016. Fish caught from the river were sacrificed and gastrointestinal
parasites isolated. A total of 121 fish comprising (and number examined, n) Distichodus
engycephalus (n = 28), Labeo senegalensis (n = 34), Auchenoglaris occidentalis (n = 14)
and Synodontis clarias (n = 45) were examined out of which 78(65.0%) were infected. S.
clarias had the highest prevalence of infection 37(82.2 %), followed by L. senegalensis
21(61.8 %) and D. engycephalus 14(50.0 %). The lowest prevalence of infection was
observed in A. occidentalis 6(42.9 %). Prevalence of infection was significantly different
between the fish species (χ 2 = 11.713, p = 0.008). The parasites isolated were of three
species, Camallanus sp., Neoechinorhynchus africanus and Acanthocephalus sp. Overall,
prevalence of the three parasites were in the range 30 – 35 %. Overall, Camallanus sp.
had the highest mean intensity [4.41 (3.95 – 4.89, 95% CI)]. Mean intensities of N.
africanus and Acanthocephalus sp., were only slightly lower: [3.17 (2.81 – 3.48, 95%
CI)] and [3.21 (2.79 – 3.66, 95% CI)] respectively. Infection was not significantly
dependent on sex of fish or season of sampling (p>0.05). Helminth parasite infection
prevalence is high in some fish species of Ebonyi River, Enugu State, Nigeria. This high
prevalence of helminths infection may compromise productivity of the fish species
infected.

Published
2019-01-07