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在利用白蜡吉丁肿腿蜂Sclerodermus pupariae防治世代周期长、发育整齐的害虫栗山天牛Massicus raddei中,我们发现该天敌只在寄主1-3龄幼虫时具有良好的寄生效果,而对3龄以上的中老龄幼虫基本不寄生。为了了解释放白蜡吉丁肿腿蜂后其种群能否在栎树林间延续下去,达到持续控制靶标害虫的效果,我们调查了其在栎树林间的转主寄主。结果表明:白蜡吉丁肿腿蜂除了寄生栗山天牛外,还能寄生双簇天牛Moechotypa diphysis、四点象天牛Mesosamyops和栎块斑吉丁Lamprodila virgata幼虫。白蜡吉丁肿腿蜂寄生不同转主寄主幼虫的成功率差异显著,对栎块斑吉丁和双簇天牛幼虫的寄生率最高,分别为76.67%和73.33%。寄生上述4种寄主时,其雌蜂在不同寄主上的产卵前期、产卵量及第2代雌蜂出蜂量、出蜂率、体长和寿命等差异不显著,只有幼虫期和蛹期历期及第2代雌蜂有翅率和雌雄性比略有差异。室内模拟林间寄生试验表明,白蜡吉丁肿腿蜂对双簇天牛和四点象天牛幼虫的寄生率较高。对双簇天牛和四点象天牛野外生活史研究发现,这2种天牛幼虫在白蜡吉丁肿腿蜂不适宜寄生的栗山天牛中老龄幼虫期、蛹期和成虫期均大量存在,表明双簇天牛和四点象天牛是白蜡吉丁肿腿蜂在栎树林中的主要转主寄主。本研究说明,在利用白蜡吉丁肿腿蜂生物防治栗山天牛中,白蜡吉丁肿腿蜂在林间寄生栗山天牛的1-3龄幼虫后,可转移寄生双簇天牛等转主寄主,以延续其种群,待下一代栗山天牛幼龄幼虫出现时再转移寄生栗山天牛,达到持续控制栗山天牛的防治效果。
In the use of Sclerodermus pupariae to control the long-term, well-developed pest Massicus raddei, we found that the natural enemies have good parasitism only in host 1-3 instar larvae. However, The middle-aged larvae basically do not parasitism. In order to understand whether the population of C. albiflorus could survive in the oak forest and achieve the goal of controlling the target pest continuously, we investigated its host of hosts in the oak forest. The results showed that, in addition to the parasitic chestnut Tian Beetle, the parasitoid could also parasitize Moechotypa diphysis, four-point larvae such as Mesosamyops and Lamprodila virgata. There was significant difference in the success rate of parasitism between different beetles with parasitism of main parasitoid larvae of Brachydanin beetle, and the parasitism rates were the highest at 76.67% and 73.33% respectively. Parasitism of the four hosts, their females on different hosts in the pre-oviposition, fecundity and the second generation of female bees were the number of bees, the bee rate, body length and life expectancy was no significant difference, only larvae and pupae Periods and the second generation of female bee had a slight difference in the rate of winged and female than male. The indoor simulation of inter-forest parasitic tests showed that the parasitism rate of beeswax beetles on the parasitism of the two-cluster celastrus and the four-point larvae were higher. The study on the field life history of double-cluster celastrus and four-point celastrus showed that the larvae of these two kinds of celastrus were abundant in middle-aged larva, pupa and adult stages of L. crassifolia , Indicating that the double-cluster celastrus and the four-point celestial beetle are the main translocators in the oak forest. This study shows that in the use of the white beetle Gibberella bee biological control chestnut beetle, white wax giganticum leg beetle parasitism chestnut Tian Bei 1-3 larvae, the transfer of parasitized double turtles and other transposable host Host to continue its population until the next generation of chestnut Tian beetle young larvae appear again when the transfer of parasitic chestnut day beetle to achieve sustained control of the chestnut day beetle control effect.