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为评价豆柄瘤蚜茧蜂Lysiphlebus fabarum对豆蚜Aphis craccivora的控害潜能,在实验室条件下,通过对豆蚜及其寄生蜂豆柄瘤蚜茧蜂的发育历期、繁殖力、寿命等生物学特性进行观察描述,组建其实验种群生命表,并对2种供试昆虫的生命表参数净生殖力R0、世代平均周期T、内禀增长率rm和周限增长率λ进行了分析。结果表明:豆蚜和豆柄瘤蚜茧蜂的生命表参数R0、T、rm和λ分别为:72.136、23.370 d、0.183、1.201和150.925、10.607 d、0.473、1.605。其中豆柄瘤蚜茧蜂rm和R0值均明显大于豆蚜,且豆蚜繁殖1个世代豆柄瘤蚜茧蜂可以繁殖2个世代,表明豆柄瘤蚜茧蜂对豆蚜的寄生能力强,繁殖速率高,对豆蚜种群有较强的控制潜能。
In order to evaluate the control potential of Lysiphlebus fabarum against Aphis craccivora, aphid Braconidae, the developmental history, fecundity, life span and so on of Aphidium aphidus and its parasitic isthmus beetle were studied under laboratory conditions Biological characteristics were observed and described. The life table of experimental population was set up. The net life span (R0), average life cycle (T), intrinsic growth rate (rm) and weekly growth rate (λ) of life table parameters of two tested insects were analyzed. The results showed that the life table parameters R0, T, rm and λ of the aphid and legume beetle were 72.136,23.370d, 0.183,1.201 and 150.925,10.607d, 0.473,1.605, respectively. Among them, the rm and R0 values of the beetle Aphididae were significantly greater than that of the Aphis gossypii, and the Aphididae propagated for one generation could be multiplied for two generations, indicating that the Aphidius rubrum possesses strong parasitism on the Aphis gossypii , High reproduction rate, aphid populations have strong control potential.