摘要
本文组建并分析了在５级恒温条件下黄古毒蛾Ｏｒｇｙｉａ ｄｕｂｉａ （Ｔａｕｓｃｈｅｒ）的种群生长和生命表。结果表朗，该虫的世代存活率及成虫繁殖力均以２６℃时为最高。种群增长指数可用下述方程表示：ｙ＝－３６６．７０３２＋３１．９２０５ｘ－０．６３５５ｘ２。在最适温度（２５．１１℃），繁殖一代，种群数量约增加３４倍；在１７．８９℃或３２．３３℃时，种群世代数量基本保持稳定。
The present paper reports the life tables of the Tussock moth (Orgyia dubia) at five different constant temperatures ranging from 18℃to 34℃. The highest survival percentage of one generation and the highest rate of the reproduction occur at 26℃.Indices of population trend (Y ) of this species within the range of temperatures (X )studied can be expressed as follows:Y=-366. 7032 + 31. 9205X - 0. 6355X2Calculated with this equation, the favourable temperature for the population growth is 25. 11℃, at which the number of the Tussock moth (Orgyia dubia ) will increase about 34 times after one generation cycle.
关键词
黄古毒娥
温度
生命表
繁殖
害虫
Orgyia dubia (tauscher)
temperature
life table
