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2012年49 No.5
The effect of low temperatures on the over-wintering pupae of Hyphantria cunea
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Key Words: low temperature,Hyphantria cunea,survive
Abstract:
- The survival rate of Hyphantria cunea Drury pupae was found to reduce with increased time at lowtemperatures. Most pupae did not survive 30 hours at-10℃,3 hours at-15℃ or 25 minutes at-20℃. The survival rate of over-wintering pupae increased with prolonged exposure to 0℃ up to a maximum time of 150 minutes,after whichthere was no further significant increase