Expression Patterns of Three Important Hormone Genes and Respiratory Metabolism in during Pupal Diapause under a Long Photoperiod.

The Chinese oak silkworm is commonly used in pupal diapause research. In this study, a long photoperiod was used to trigger pupal diapause termination. Genes encoding three hormones, namely prothoracicotropic hormone (PTTH), ecdysis triggering hormone (ETH), and eclosion hormone (EH), were studied.