INFLUENCE OF TRICALCIUM PHOSPHATE ON POPULATION DEVELOPMENT IN THE KHAPRA BEETLE, TROGODERMA GRANARlUM EVERTS'"
نویسندگان
چکیده
The effect of n 2.5% concentration by weight of lricalcium phosphate in a wheat genn diet on the demographic parameters (life table) of the khapra beetle, Trogoderma grallarium Everts, was investigated. This sublethal concent.ration of tricalcium phosphate, a known insect population suppressant for many slored-product insect and mite species. caused no significant changes in either the intrinsic rale (r) or finite ratc of natural increase ().,.). The lack of significance appears to be caused by a combination of a significantly longer generation lime ('I') and a larger number or eggs laid (GRR).
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