The Juvenile Hormones in Blood of Larvae and Adults of Manduca sexta (Joh.)

Autor: Peter, Martin G., Dahm, Karl H., Roller, Herbert
Zdroj: Zeitschrift für Naturforschung C; April 1976, Vol. 31 Issue: 3-4 p129-131, 3p
Abstrakt: Juvenile Hormone, Manduca sexta The juvenile hormones (JH) in extracts of M anduca sexta blood were converted to 10-(2,4-di-chlorobenzoyloxy)-11-methoxy derivatives and quantitatively determined by gas chromatography with electron capture detection. Early IVth instar larvae contained 0.62 ng JH-I, 1.1 ng JH-II and 0.07 ng JH -III per ml blood. Early Vth instar larvae, and adult of both sexes contained the hormones in concentrations 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 ≦ 0.003 ng/ml blood.
Databáze: Supplemental Index