【摘要】 通过野外调查的方法,对吉林省延边地区舞毒蛾的生活史及幼虫孵化率进行了研究。结果表明,舞毒蛾在延边地区1年发生1代,以完成胚胎发育的"卵内幼虫"越冬。翌年5月上旬;杨树将要萌芽时幼虫开始孵化出壳。幼虫孵化始盛期为5月中旬,高峰期为5月下旬,末期为6月上旬;幼虫在7月上旬开始老熟化蛹,化蛹始盛期为7月中旬,高峰期为7月下旬,末期为8月上旬;成虫在7月中旬开始羽化,羽化始盛期为7月下旬,高峰期为8月中下旬,末期为8月底至9月初;产卵始盛期在7月中旬,高峰期为8月中下旬,末期在8月底至9月初;卵在8月底开始发育成较为完全的幼虫胚胎,随之进入滞育状态。根据舞毒蛾幼虫孵化率与日均温值的相关性,建立线性回归模型Y₁=12.074 2X₁-139.190 8来测报舞毒蛾幼虫的当日孵化率,并进行了回测验证。更多还原

【Abstract】 The field survey studied the life history of Lymantria dispar and larvae hatching rate in Yanbian of Jilin. The results showed that Lymantria dispar in Yanbian bred a generation every year to complete the overwintering of "larvae in eggs"with embryonic development. In early May next year,the budding poplar accompanied with the hatching of larvae. The hatching of larvae was prime in mid-May,climax in late May,and terminal in early June. Larvae aged to pupation in early July,which was prime in mid-July,climax in late July,terminal in early August. Adult insects began to eclosion in mid-July with the prime period in late July,the peak in mid-to-end August and the terminal period from late August to early September. The spawning period was prime in mid-July,climax in mid-to-end August,and terminal in late August to early September. In the end of August,eggs developed into complete larvae embryos and entered a diapause state. Based on the relevance of the hatching rate of Lymantria dispar larvae and the daily average temperature,the linear regression model Y₁= 12. 074 2X₁-139. 190 8 was established to predict the hatching rate of Lymantria dispar larvae that day,which was proved with the actual data.更多还原