5种恒定温度下桃粉蚜实验种群的研究

[目的]对新疆绿洲荒漠区桃粉蚜(Hyalopterus amygdali (Blanchard))在室内恒定温度下生长与繁殖规律进行了研究.[方法]通过对桃粉蚜在不同恒定温度下生长与繁殖的观察与统计,组建在5种恒温下的实验种群生命表,并对其实验种群参数进行计算分析.[结果]在18～ 28℃,温度越高,桃粉蚜的发育速率加快；其净增殖率(Ro)、内禀增长率(rm)和周限增长率(λ)在18 ～24℃也随着温度的升高而提高,在24℃时最高.[结论]说明桃粉蚜的最适温度为24℃.在5种恒定温度下观察了桃粉蚜的生长发育速率,分别确定了无翅蚜各龄若蚜及全若期的发育起点温度和有效积温.

Study on Laboratory Population of Hyalopterus amygdali at Five Constant Temperatures

【Objective】The development and reproduction of the Hyalopterus amygdali on Xinjiang oases desert were evaluated at interior constant temperature in laboratory.【Method】Based on the results of growth and reproduction of Hyalopterus amygdale,life tables of laboratory population at five constant temperatures were constructed,and the life table parameters were analyzed at the same time.【Result】The results showed that the developmental rate increased with the rise of temperature from 18℃ to 28℃;Parameters of Hyalopterus amygdali,such as innate capacity(rm),net reproduction rate(Ro) increased within the range of 18-24℃ and presented a mzximum value at 24℃.【Conclusion】 The most suitable temperature for the Hyalopterus amygdali is 24℃.