Dependence of Antheraea pernyi ontogenesis on the influence some ecdysone agonists
The biological activity of R-209, R-210 and R-211ecdysone agonists are determined by the developmental stage and species of host plant. Caterpillars and chrysalises were the most sensitive to substances influence; the most stable were eggs and imago. The influence degree of preparations depends on the kind of substance, its concentration and way of influence. The biological activity of ecdysone agonists is more appreciable in the feeding of caterpillars by the lives of birch, then by the lives of oak.