摘要
在21℃，24℃，27℃，30℃，33℃五种不同恒温条件下，观察了竹裂爪螨生长发育各个时期的存活情况及成螨的生殖力，进而构建了竹裂爪螨在五种恒温条件下的实验种群特定年龄生命表。分析结果表明，温度对卵的孵化影响不大，孵化率在27℃最高，为98．70％。幼螨、若螨的存活率以27℃最高，高温不利于幼螨、若螨的存活，33℃下仅为55．72％发育为成螨。在试验温度范围内（21℃－33℃）世代存活率、雌成螨平均产卵量、种群增长指数均呈抛物线趋势，可以用二次抛物线方程表示其随温度的变化情况。在最适温度条件下（26．96℃）繁殖一代科群数量增加约9．86倍。
Schizotetranychus bambusae Reck was reared at constant temperatures (21, 24, 27, 30, and 33℃) to study its survival in various development stages and the fecunity of its adults.A life table was established of the experimental population at these temperaures.The influence of temperature on the hatching of eggs seemed insignifican, the hatchability being highest at 27℃ (98. 70% ). The survival of the larvae and nymphs was highest at 27℃.Higher temperatures were unfavorable for their survival: at 33℃，only 55.72% developed into the adult stage.In the temperature range of the experiment(21 ~ 33℃), the survival percentage of whole generatio,the number of eggs laid per female and the index of population increase showed a general trend which can be described by parabolic equations.The population size is estimatal to increase by 9.86 times per genration at the thoeretical optimum temperature(26. 96℃).
出处
《西南农业大学学报（自然科学版）》
CSCD
1999年第6期556-566,共11页
Journal of Southwest Agricultural University
基金
四川省林业厅应用研究资助
关键词
竹裂爪螨
种群
生命表
温度
毛竹
Schizotetranychus bambusae Reck
populations
life table
temperature
