Abstract :
Fasciolosis is one of the most serious food-borne parasitic diseases. These parasitic
infections are caused by Fasciola hepatica and F. gigantica among cattle and human populations. The
carrier of fascioliasis is a fresh water host snail, Lymnaea acuminata. The control of vector snails is a
major tool in reducing the incidences of fasciolosis. Synthetic molluscicide causes adverse effects in
the environment as well as on non target organisms. The present studies were designed for
evaluation of molluscicidal efficacy of medicinal plant Solanum surattense against L. acuminata.
The efficacy of S. surattense was concentration and time dependent. Toxicity experiment of dried
leaf powder of S. surattense and their different organic extracts and column purified was
continuously observed for 96h at different concentrations. Mortality was observed for 24, 48, 72 and
96h. Six aquariums were set up for each concentration. The control group animals were kept in the
equal volume of water under similar conditions without treatment. Mortality of snails was recorded
at intervals of 24h each up to 96h and lethal values were calculated. The 24h LC of dried leaf powder 50
of S. surattense was 157.33mg/l and at 96h 150.26 mg/l. Among all the organic extracts, the ethanol
extract of dried leaf powder of S. surattense was found more toxic. The present study revealed that
the product of S. surattense has potent molluscicidal phytochemicals, which may be used as potent
molluscicides for control of harmful snails.
Keyword :
Fasciolosis, Lymnaea acuminata, Molluscicides, Solanum surattense.