Starvation is an important factor affecting the growth and development, disease prevention ability and repro-ductive habits of Antheraea pernyi. In order to explore the starvation tolerance of tussah, tussah varieties Liaocan 527, 9906, Kangda and Jiqing were used as experimental materials to test the starvation tolerance of newly-hatched larvae at low temperature (6℃). The results showed that Liaocan 527 had the strongest starvation tolerance, followed by Jiqing, and the varieties with the worst starvation tolerance were 9906 and Kangda. The average duration and total duration of starvation tolerance of Liaocan 527 were 10. 26 d and 18 d, which were 1. 93 d and 6 d longer than Kangda respectively. The average starvation mortality of Liaocan 527 was 9. 51％, which was 3. 59 percentage points lower than that of Kang-da at a significance level. The highest starvation mortality of Liaocan 527 appeared the latest ( the 10th day) , which was 1 d, 2 d and 3 d later than Jiqing, Kangda and 9906, respectively, and the peak death rate was also the lowest. The LT50 and LT95 of Liaocan 527 were 9. 22 d and 15. 43 d, respectively, which were significantly longer than those of the other three varieties. The results also showed that the starvation resistance of the newly-hatched larvae was not related to the egg weight. Our results showed that the newly-hatched larvaes of Liaocan 527 had the strongest starvation tolerance among the four varieties. It is possible to screen out the newly-hatched larvae with strong starva-tion resistance through low-temperature starvation, which provides a basis for the selection and breeding of stress resistant varieties.
维普
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