小菜蛾蛹期寄生蜂-颈双缘姬蜂地理种群间对温度反应的比较研究  

Comparative study on response to temperature of two geographic populations of Diadromus collaris (Gravenhors) (Hym.: Ichneumonidae), a pupal parasitoid of Plutella xylostella (L.) (Lep.: Plutellidae).

作　　者：施祖华[1] 刘树生[1] GEBREMESKEL Fisseha B. 

机构地区：[1]浙江大学应用昆虫学研究所,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》2002年第5期480-484,共5页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：澳大利亚国际农业研究中心资助项目 (ACIAR CS2 / 1998/ 0 89)

摘　　要：在室内以小菜蛾蛹作为寄主 ,比较浙江杭州和台湾梨山 2地的颈双缘姬蜂在 13～ 35℃范围内7个温度下的生长发育、存活、子代性比及内禀增长率 .在 13和 35℃下 ,2个种群均不能育出后代成虫 .在 15、2 5、30、32和 33.5℃下 ,发育历期、成虫寿命和每雌寄生的寄主蛹数在 2种群间无显著差异 ,但幼虫至成虫阶段的存活率在 32和 33.5℃下 ,杭州种群均高于梨山种群 ,其中 32℃下差异达到了显著水平 .子代性比除 33.5℃下 2种群间无显著差异外 ,15、2 5、30和 32℃下杭州种群均显著或极显著高于梨山种群 .杭州种群的内禀增长率在 15～ 33.5℃范围均高于梨山种群 ,在 30和 32℃下 ,这种差异更为明显 .推测在高温区段种群间存活率的差异是由于各种群对当地气候条件的长期适应所造成的 。The development, survival, sex ratio of progeny and the intrinsic rate of increase were compared in laboratory under seven temperatures ranging 13 ℃ to 35 ℃ between two geographic Diadromus collaris populations, one originated from Hangzhou, Zhejiang and the other from Lishan, Taiwan, China, with the pupae of Plutella xylostella as host throughout the experiment No adult progeny were produced at 13 ℃ and 35 ℃ in each population No differences on the development time, adult longevity and number of host pupae parasitized per female were detected under 15 ℃, 25 ℃, 30 ℃, 32 ℃ and 33 5 ℃ between the two populations However, the survival rates of the larva adult stage in Hangzhou population were higher than those in Lishan population under 32 ℃ and 33 5 ℃, and under the late temperature significantly difference was detected With the exception at 33 5 ℃, sex ratios of progeny in Hangzhou population were significantly higher than those in Lishan population The intrinsic rates of increase were also higher in Hangzhou population than those in Lishan population and the differences between the two populations were more obvious at 30 ℃ and 32 ℃ It was speculated that the difference on survival rate under high temperature regime between the two populations was due to their long term adaptation to local climates, and that the intraspecific variations on survival rate and sex ratio of progeny would be the most valuable biological characteristics to be considered at further studying and using geographic populations of the parasitoid in the biological control of P xylostella

关 键 词：蛹期寄生蜂 小菜蛾 颈双缘姬蜂 地理种群 温度反应 种间变异 生物防治 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治] S476.3[农业科学—植物保护]