摘要
桃蚜 Myzus persicae、萝卜蚜 Lipaphis rysimi 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率进行校正,并未对计算所得的内禀增长能力 r_m 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的 r_m 值含义模糊,故建议不予采用.
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.
出处
《华东昆虫学报》
1992年第2期21-26,共6页
Entomological Journal of East China
基金
霍英东教育基金会
国家自然科学基金
