Abstract
Newly ecdysed 4th instar larvae of some tetramolter strains having different genotypes on the sex-linked maturing genes, Lme and +Lm, were subjected to high temperature of 38°C for 24hr, and effects of the treatment on induction of the trimolter and hormonal secretion of the corpora allata were examined. The results are as follows:
1. When the larvae being controlled by the gene of Lme were treated with high temperature, they often became trimolter due to the decrease of hormonal secretion in corpora allata controlled by the brain.
2. The inductivity of trimolter with high temperature treatment was affected by the rearing temperature after the treatment, being lower in 20°C than in 25°C.
