Abstract
The total effective temperature for the pupal stage of Antheraea pernyi was measured under room temperature (21-23°C) and natural condition.
1) The total effective temperature for the hibernated pupae is 240-260 degree days when the pupae are kept under the temperatures of 21-23°C.
2) The total effective temperature for the pupae of 1st generation is 240-270 degree days under natural condition.
3) The threshold of 2nd emergence lies just intermediate between the both periods in which the total effective temperature reach to 240 degree days in daily average temperature and in daily maximum ones.
