Adaptation to the low temperature of the membrane lipid of diapausing pupae of Helicoverpa armigera, and the loss caused by development to emergence

在本研究中，我们阐明了棉铃虫（Helicoverpa armigera, Hubner）在20℃（SD）短光周期和15℃（LT）长光周期诱导的滞育蛹通过冷驯化改变了磷脂组成和不饱和脂肪酸比例。这些结果表明，在低温条件下，棉铃虫的滞育蛹保持了膜的流动性。然而，终止滞育后，磷脂的组成恢复到初始水平。

In the present study, we clarify that both diapausing pupae induced by a short photoperiod at 20℃ (SD), and by a long photoperiod (LD 16:8h) at 15 °C (LT)of the cotton bollworm Helicoverpa armigera (Hubner) changed composition of phospholipid and that ratio of unsaturated fatty acid by cold acclimation. These results suggested that diapausing pupae of H. armigera maintained membrane fluidity under low temperature. However, after terminated diapause, composition of phospholipids was returned to the initial level.