Molluscicidal activity of six pesticides against the two land snails, Monacha cantiana and Eobania vermiculata (Gastropoda: Helicidae) under laboratory conditions [electronic resource].

Includes references.

The following six pesticides namely. bensultap. chlorpyrifos-ethyL deltamethnn. dlazonlxy. lambda-cyhalothrin and methomyl were laboratory tested for their moUuscicldal activity agamst the two land snails. Mon8cha can/iana (Montagu) and Eobania venn;culala (Muller) as poisonous baits at a constant concentration of 2% Results revealed the toxic effect. of all tested pesticide baits with mortality percentage increasing with an increase in the period of exposure. It was evident that deltamethrin belonging to pyrethroid group exceeded other pesticides and showed high initial toxicity of 70.0% and 93.3% against M. can/iana and E. vermicuJata. respectively after three days of exposure However, methomyl belonging to carbamate group surpassed other pesticides and gave 100.0% mortality after seven and 12 days for the two land snails. M. cantian8 and E. venniculata. respectively. On the other hand. chlorpyrifos-ethyl exhibited the lowest mortality percentages against the tested land snails, Obviously, methomyl proved to be the most effective pesticides followed by deltamethrin, bensultap, lambda-cyhalothrin, diazonlxy then chlorpyrifos-ethyl against the two land snails. Moreover, the brown garden snail. E. vermicu/ata showed more sensitivity to the tested pesticides especially methomyl and deltamethrin than the clover snail. M. cantiana.

Summary in Arabic.

1