Activity of the insect growth regulator fenoxycarb (RO-13-5223) on Triatoma infestans (Hemiptera).
1. Fenoxycarb (RO-13-5223) exhibits a strong juvenile hormone type of activity against Triatoma infestans. 2. Topical treatment of last-stadium nymph with the juvenoid caused the formation of superlarvae, adult-larvae intermediates and adultoids. The ED50 was 0.02 microgram/insect. 3. Taking into account abnormalities in oceli, head, thorax, legs, wings, abdomen, conexivo and external genitalia, a scoring system to evaluate the retention of juvenile characters after moulting was developed. 4. Intermediate dose of the juvenoid produced the prolongation of the last instar nymph. 5. Abnormal individuals formed composite cuticles possessing both nymph and adult morphological features.
D000818:Animals; D002219:Carbamates / Q000494:pharmacology*; D014355:Chagas Disease / Q000517:prevention & control / Q000635:transmission; D004199:Disease Vectors; D006430:Hemiptera / Q000254:growth & development*; D008675:Metamorphosis, Biological / Q000187:drug effects; D048448:Phenylcarbamates
D002219:Carbamates; D048448:Phenylcarbamates; C052034:fenoxycarb