Abstract
Phytotherapy of chlorophyllin formulations against Fasciola gigantica infected Lymnaea acuminata under sunlight exposure was highly toxic against redia and cercaria larvae. Binary combinations (1:1 ratio) of chlorophyllin (CHL)+freeze dried cow urine (FCU) were more toxic against cercariae (8h LC50: 9.6mgL−1) than single treatment with chlorophyllin (8h LC50: 12.6mgL−1) in sunlight. The larvicidal activity of sunlight exposed CHL against rediae (8h LC50: 13.5mgL−1) and cercariae (8h LC50: 12.6mgL−1) was more pronounced than laboratory conditions CHL treatment (rediae- 8h LC50: 305.9mgL−1; cercariae- 8h LC50: 765.4mgL−1). Larvicidal activity of FCU was less than CHL and CHL+FCU against both redia and cercaria. Chlorophyllin and its formulations were more toxic against redia and cercaria larvae in sunlight than laboratory conditions. CHL and its different formulations may be used as potent larvicides against Fasciola gigantica larvae. Chlorophyllin formulations will be economical, ecologically sounder and their use in aquatic environment will be safe.
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