part_of previtellogenic phase physiological process of malaria vector presence of juvenile hormone IDOMAL:0002295 IDOMAL:0002295 The juvenile hormone in females of Aedes aegypti increases markedly between 24 and 72h after emergence. Circumstancial evidence associating JH with onset of responsiveness to host cues was obtained with diapausing mosquitoes. Application of large doses of the JH analogue methoprene to diapausing females of Anopheles freeborni and Culex tarsalis hastened their diapause development, including responsiveness to vertebrate hosts. idomal_namespace presence of JH development of competence to respond to host cue