BIOEFFICACY OF ALLIUM SATIVUM EXTRACT IN THE CONTROL OF TRICHODINA AND EPISTYLIS SPP OF CLARIAS GARIEPINUS IN GWAGWALADA TOWN FCT, ABUJA
Abstract
Parasitological examination was carried out in one hundred and forty-five naturally collected
Clarias gariepinus from Usuma River in Gwagwalada. It revealed skin and gill infestation with
ectoparasitic protozoan Trichodina and Epistylis and monogenean Tetrahymena spp. with
average 20, 15 and 25%, respectively. The average total ectoparasitic infestation in the
examined catfish was 60%.The significance of herbal control measures using A. sativum as a
new method to eradicate such parasites, was evaluated. A bioassay of 96 hours LC50 of A.
sativum emphasized that its value was 192mg/L. The herbal control with A. sativum was safe and
effective to treat the ectoparasitic protozoa Trichodina and Epistylis spp. at dose 20mg/L, but not
suitable for treating the monogenean Tetrahymena spp.
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