Comparative studies of the effect of thiourea and BHC on behaviour and mortality in adult snails of the species Lymnaea stagnalis and on their egg masses.


When adult Lymnaea stagnalis specimens were treated with aqueous thiourea and BHC solutions for up to 30 days, they displayed hyperirritability after 3 +/- 2 days, manifested in climbing behaviour at the surface of the water to avoid contact with the treated medium and to take in fresh air. They remained clinging to the wall of the container for long… (More)


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