title: The juvenile hormones in blood of larvae and adults of Manduca sexta (Joh.).
abstract: The juvenile hormones (JH) in extracts of Manduca sexta blood were converted to 10-(2,4-dichlorobenzoyloxy)-11-methoxy derivatives and quantitatively determined by gas chromatography with electron capture detection. Early IVth instar larvae contained 0.62 ng JH-I, 1.1ng JH-II and 0.07 ng JH-III per ml blood. Early Vth instar larvae, and adult of both sexes contained the hormones in concentration from 0 to 0.24 ng/ml blood. No hormone was detected in late Vth instar (wandering) larvae. The detection limit in our experiments was less than or equal to 0.003 ng/ml blood.
mesh_terms: D000367:Age Factors; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D006458:Hemolymph / Q000032:analysis; D007605:Juvenile Hormones / Q000097:blood*; D007814:Larva; D007915:Lepidoptera; D009036:Moths
chemical_list: D007605:Juvenile Hormones