【摘要】 试验在人工气侯室内进行 ,设置 6个温度处理湿地松粉蚧成虫 ,9个温度处理卵 ,结果表明 :温度对湿地松粉蚧越冬代成虫死亡率、产卵量、繁殖力有着显著的影响 ;该蚧卵的发育起点温度为 6 .6 4℃ ,有效积温为 1 5 3.31日度 ,发育的最适温度在 2 9℃左右 ;在 1 9～ 32℃时 ,卵的孵化率均在 90 %以上 ,差异不显著 ,但在 35～ 37℃时 ,卵几乎不孵化 ,用线性日度模型、王氏模型与Logistic模型对卵的发育速率进行拟合 ,均有较好的相关性和拟合度 试验结果与野外实验得出的结论是基本一致的 ,高温是新侵入区湿地松粉蚧夏季种群数量显著凋落的主要原因之一更多还原

【Abstract】 The effects of constant temperatures to the experimental population of Oracella acuta were studied in artificial weather house. The adults of O. acuta were treated with 6 different temperatures while the eggs were treated with 9 different temperatures. The results indicated that the temperature significantly affected the mortality, the egg number laid by per females and the fecundity of adult; The effective accumulative temperature and the low development thresholds of the egg was 153.31day-degrees and 6.64 ℃ respectively, and the most optimal temperature was 29 ℃.It also showed that the hatch rate of eggs had no difference, but the egg did not hatch in a very high temperature treats (35～37 ℃). The results from experiment and investigation in forest were the same that the high temperature was the most important factor affecting the population of O. acuta to significant decrease quickly in summer.更多还原