温度对金银花尺蠖存活和繁殖的影响

Effect of temperatures on survival and fecundity of Heterolocha jinyinhuaphaga

在室内7个恒温(16、19、22、25、28、31和34℃)条件下研究了温度对金银花尺蠖Heterolocha jinyinhuaphaga Chu生长发育、存活、成虫寿命及繁殖等生物学特性的影响。结果表明,温度对其有显著的影响,金银花尺蠖各虫态的发育历期随温度升高而明显缩短,当温度继续升高到34℃,发育历期反而延长,各虫态发育历期同温度之间呈抛物线变化;25℃时金银花尺蠖各虫态的存活率最高,均达到90%以上,在高温和低温下,存活率则明显下降;低温条件下,金银花尺蠖的雌性比率大于雄性的比率,随着温度的升高,雌性比率在不断的下降;成虫寿命与温度成负相关,随着温度的升高而缩短;平均单雌产卵量在25℃时最高,为232.34粒,高温和低温下,则明显下降。

The effect of temperature on the development,survival,adult longevity and fecundity of Heterolocha jinyinhuaphaga Chu was studied at seven constant temperatures（16,19,22,25,28,31,34℃） in a laboratory.The developmental duration of every larval instar shortened with increasing temperature up to 34℃ at which temperature development was prolonged.This indicates a non-linear relationship between temperature and development.The survival of every larval instar was the highest（ 90%） at 25℃ and was obviously less at lower or higher temperatures.The proportion of females to males was higher at low temperatures and decreased with increasing temperature.Adult longevity was inversely correlated with temperature.The oviposition rate per female was the highest at 25℃（232.34） and significantly less at lower or higher temperatures.