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本文报道胡瓜钝绥螨AmblyseiuscucumerisOudemans在 2 5℃条件下以毛竹 4种害螨南京裂爪螨chizotetranychusnanjingensisMa&Yuan、竹裂爪螨S .bambusaeReck、竹缺爪螨AponychuscorpuzaeRimando、竹刺瘿螨AculusbambusaeKuang为猎物的实验种群生命表 ,并进行比较结果表明 :①胡瓜钝绥螨能取食上述 4种害螨 ,其世代存活率依次为 90 4%、77 5 5 %、 87 93%、 81 63% ;②每雌总产卵量依次为 38 1 2粒、 45 77粒、 35 5 9粒、 30 76;③胡瓜钝绥螨以南京裂爪螨为猎物其净增殖率R0 =1 6 74低于南京裂爪螨 (R0 =2 0 84) ,但是内禀增长率rm=0 1 5 4是猎物的 1 73倍 (rm=0 0 89) ,世代周期T =1 8 31和种群倍增时间t=4 5 0 88均低于南京裂爪螨 (T =33 35 ,t=7 70 4 ) ,因此在林间当南京裂爪螨离巢、破巢或大量迁移时能有效地控制其种群增长 ;④胡瓜钝绥螨以竹裂爪螨为猎物其净增殖率R0 =2 5 81 ,内禀增长率rm=0 1 5 2 ,周限增长率λ =1 1 64均低于竹裂爪螨 (R0 =39 2 8、rm=0 1 92、λ =1 2 1 2 ) ,而世代周期T =2 1 35种群倍增时间t=4 5 5 2均高于竹裂爪螨 (T =1 9 0 8,t=3 60 3)因此必须在竹裂爪螨处于低密度时释放胡瓜犯绥螨才能有效地控制其种群密度的增长 ;⑤胡瓜钝绥螨以竹裂爪螨为猎物时 ,其
This paper reports the AmblyseiuscucumerisOudemans cucumber AmblyseiuscucumerisOudemans at 25 ℃ under the conditions of bamboo mosquitoes Nanjing mosquito mites zizotetranychusnanjingensisMa & Yuan, bamboo crack mites S. bambusaeReck, bamboo mites Aponychus corpuzaeRimando, bamboo mites AculusbambusaeKuang as the experimental population life The results showed that: (1) Amblyseius cucumeris can feed on the four kinds of pest mites mentioned above, and their survival rates of generations are 90.4%, 77.55%, 87.93% and 81.63% respectively; The numbers of eggs were 38 1 2, 45 77, 35 5 9 and 30 76 respectively. ③ The net reproduction rate of Cucumber Amblyseius spp. Prey in Nanjing was 91.67% lower than that of R0 = 2 0 84). However, the intrinsic rate of increase rm = 0 1 54 was 1 73 times that of the prey (rm = 0 0 89), and the generational cycle T = 1 8 31 and the population doubling time t 4 5 0 88 were both low (T = 3335, t = 7704) in Nanjing, therefore, it could effectively control its population growth in the forest when the Noctuid-disseminated mites from nest, nest or migrate in large quantities. ④ Cucumber Amblyseius cucumeris The rate of net increase of Rt = 2581, the intrinsic rate of increase rm = 0 1 5 2, the rate of increase of the period λ = 1 1 64 were lower than that of bamboo (R0 = 39 2 8, rm = 0 1 92, λ = 1 2 1 2), while the population doubling time of T = 2135 was more than that of bamboo Therefore, it is necessary to release Cucumber mites in response to Curtis mites in order to control their population density effectively. (5) Cucumber mite (Culex pipiens) Crack mites as prey, its