Juvenile hormone activity in <i style="">Dysdercus cingulatus </i>Fabr by juvenile hormone esterase inhibitor, OTFP

Abstract

Application of juvenile hormone esterase inhibitor 3-octylthio-1,1,1- trifluropropan-2-one (OTFP) to 5^th instar nymphs and virgin females of <i style="">D. cingulatus</i> revealed the profound role played by juvenile hormone esterase (JHE) in metamorphosis and reproduction<i style="">.</i> The ability of OTFP to cause delay and the formation of malformed nymphs, suggests that inhibition of JHE <i style="">in vivo</i> maintains a higher than normal hemolymph JH titer. It is obvious that OTFP does inhibit <i style="">in vivo</i> JHE activity in late instar nymphs. Further, the application of JHE inhibitor, OTFP to virgin females demonstrates that substituted trifluropropanones can indirectly stimulate egg development by inhibiting JHE activity in virgin females.