The toxicity of aqueous extracts from some local plants to Biomphalaria pfeifferi snails

الملخص EN

Aqueous extracts of twenty plant specics weie rested for their toxicity to Biomphalaria pfeifferi.

Tephrosia sp.

gave ؛'؟00؛ mortality at all concentrations tested.

Xanthium hrasiiium, ’ ' chrisli, Cyperus rotundas, Ipomea aquatica and Kicinus communis inflicted high mortality on B.

pfeifferi snails.

The rest of the tested plants showed either poor ©١٦٥ •١ toxicity to B.

pfeifferi.