These are substances, first discovered in plants, that damage the corpora allata thus preventing juvenile hormone (JH) from doing its normal job. Applied to early larval stages, precocenes induce premature or precocious metamorphosis (like that induced by the surgical removal of the corpora allata [View]).
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Insecticidess it turns out, JH is too unstable to be practical, but some synthetic JH mimics, e.g., methoprene (Altosid®) pyriproxyfen (Esteem®, Knack®, Distance®) diofenolan are now being used. Precocenes <span>These are substances, first discovered in plants, that damage the corpora allata thus preventing juvenile hormone (JH) from doing its normal job. Applied to early larval stages, precocenes induce premature or precocious metamorphosis (like that induced by the surgical removal of the corpora allata [View]). Not only does precocious metamorphosis cut short the destructive larval phase of the insect, but the adults are abnormal (besides being small). The females, for example, are sterile (be Summary
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