دراسات حول المجموعة الحيوانية المتطفلة على أسمال الكارب في مزرعة أسمال الفرات، العراق

الملخص EN

A series of experiments were conducted for the first time in Iraq to evaluate the efficacy of five plant leaves extracts (Ibicella lutea, Nerium oleander, Clerodendron inerme, Allium cepa and Eucalyptus spp.) in treating the common carp (Cyprinus carpio) infected with monogenetic trematodes of genera Dactylogyru and Gyrodactylus.

Five different concentrations of such extracts were used to bath fishes for 5, 10, 15, 20 and 25 minutes.

A concentration of 15% onion leaves, A.

cepa for 25 minutes of bath exposure was effective in trematode eradication.

Extracts of both Eucalyptus and N.

oleander at a concentration of 10 % each were also effective for ten minutes exposure.

Extracts of false yasmine leaves, C.

inerme had no any effect on such parasites.

On the other hand, extracts of I.

lutea caused a serious damage to treated fishes when used at different concentrations and at different periods of exposure.