金纹细蛾的发育起点温度和有效积温

Developmental threshold temperature and effective accumulated temperature of Lithocolletis ringoniella.

在自然变温条件下，研究金纹细蛾Lithocolletis ringoniella Matsumura各虫态发育历期。结果表明，成虫产卵前期、卵、幼虫、蛹及全世代的发育起点温度分别为7．5，5．2，10．4，11．3和7．1℃，有效积温分别为40．6，59．7，102．2，15．4和203．1日·度。根据有效积温法则，预测该虫在山东省1年发生4～6代，第1、2代成虫发生期分别为5月下旬和6月下旬。

The developmental durations of different stages of Lithocolletis ringoniella Matsumura were investigated at room temperatures. The results showed that the threshold temperatures of adult pre-oviposition, egg, larval, pupal stages and whole generation were 7.5,5.2,10.4,11.3 and 7.1 ℃ with effective accumulated temperature of 40.6,59.7, 102.2,15.4 and 203.1 degree-day respectively. It is predicated that there were 4 - 6 generations per year occurred in Shandong Province.The adults of 1st and 2nd generations emerged in late May and late June in Taian, Shandong Province.