蝇蛹金小蜂对黑腹果蝇蛹的寄生习性  

Parasitic Behavior of Pachycrepoideus vindemmiae Rondani to Fruit Fly Pupae

作　　者：段毕升[1] 郑金土 方磊[1] 胡好远[1] 张同心 周和锋[3] 陆艇 

机构地区：[1]安徽省高校生物环境与生态安全省级重点实验室安徽师范大学生命科学学院,安徽芜湖241000 [2]浙江省宁波市林特科技推广中心,浙江宁波315012 [3]慈溪市林特技术推广中心,浙江慈溪315300 [4]余姚市杨梅研究开发中心,浙江余姚315410

出　　处：《热带作物学报》2012年第6期1111-1115,共5页Chinese Journal of Tropical Crops

基　　金：国家自然科学基金(No.31172145);安徽师范大学创新基金(No.2010cxjj13);重要生物资源保护和利用研究安徽省重点实验室基金;宁波市重大(重点)科技攻关择优委托项目(No.2009C10004)

摘　　要：黑腹果蝇是杨梅果实的主要害虫之一,蝇蛹金小蜂是黑腹果蝇蛹期寄生蜂。通过在杨梅园使用果蝇蛹进行诱集,获得蝇蛹金小蜂;并探讨蝇蛹金小蜂对果蝇蛹日龄的选择策略、产卵期和后代产量及寄主大小对寄生蜂后代大小和性比的影响。结果表明:蝇蛹金小蜂可利用1～3日龄的果蝇蛹;寄生蜂产卵期为(3.41±2.62)d,单个雌蜂后代雌雄蜂分别为(8.33±5.22)和(3.50±3.42)头,后代性比偏雌,雄性百分比为(0.28±0.20);随寄生蜂产卵期的延长,寄生蜂后代数量显著降低。后代寄生蜂的胫节长度与寄主的蛹长度间存在显著的正相关;在较大的寄主上,寄生蜂倾向于产出更多的雌性后代。Drosophila melanogaster is an important pest insect to waxberry. Pachycrepoideus vindemmiae is one of the species parasitizing pupae of fruit flies. In this article, by collecting parasitoid wasps with fruit fly pupae in waxberry garden, the parasitoid wasp was got, and the selective strategies to ages of fruit fly pupae, oviposition dUration and offspring number of P. vindemmiae, and the effects of host size on parasitoid offspring size and sex ratio were studied. The results showed that the parasitoid wasp could parasitize pupae of all ages in our experiments. Oviposition duration of the parasitoid was （3.41±2.62）d, female and male offspring reached（8.33± 5.22）and（3.50±3.42）per female. Offspring sex ratio of the parasitoid wasp was female biased and male proportion reached （0.28±0.20）. With the increasing of oviposition duration, less offspring were laid. The tibia length of parasitoid wasp offspring was positively correlated with the length of fruit fly pupae. More female offspring were laid in the larger hosts.

关 键 词：蝇蛹金小蜂 果蝇 杨梅 性比 寄主质量 

分 类 号：Q968.9[生物学—昆虫学]