温度对桃蚜、萝卜蚜体重及种群参数的影响

桃蚜Myrus perslcae、萝卜蚜Lipaphis crystml在能正常产仔的整个恒温范围内，成蚜和新产仔蚜体重随温度的变化都符合二次抛物线，但体重最高值出现较低的温度下．即体重变化主要表现为随温度升高而下降的趋势．在组建蚜虫的生命生殖力表时，以新产仔蚜体重对其在各温度下的生殖事进行校正。并未对计算所得的内禀增长能力rm值及其随温度的变化情况产生明显的影响，不仅没有提供新的信息。相反。这一方法使计算所得rm的值含义模糊。故建议不予采用。

THE INFLUENCE OF TEMPERATURE ON THE BODY WEIGHT AND POPULATION PARAMETERS OF MYZUS PERSICAE AND LIPAPHIS ERYSIMI

In Myzus persicae and Lipaphis erysimi,the change of body weight of both adult and young in the whole temperature range allowing normal reproduction followed the pattern of a parabola given by a quadratic equation.The maximum weight occurred,however,under relatively low temperature in the range,which means that in most of the temperature range body weight decreased with rise in temperature. When the fertility rates of the aphids under different temperatures were compiled with numbers of young weighted by the weight at birth,the values of the intrinsic rates of increase and their change pattern were not significantly affected,and compared with the traditional method no new information was obtained.On the contrary,the significance of the intrinsic rates of increase calculated from the modified life and fertility tables became somewhat am- biguous,and thus the use of the modified method should be discontinued.