中红侧沟茧蜂滞育临界光周期和敏感光照虫态的测定  

Critical photoperiod and sensitive stage of diapause induction in Microplitis mediator (Haliday) (Hymenoptera:Braconidae)

作　　者：李文香[1,2] 李建成[1] 路子云[1] 刘小侠[2] 张青文[2] 

机构地区：[1]河北省农林科学院植物保护研究所,河北省农业有害生物综合防治工程技术研究中心,河北保定071000 [2]中国农业大学农学与生物技术学院昆虫学系,北京100094

出　　处：《昆虫学报》2008年第6期635-639,共5页Acta Entomologica Sinica

基　　金：国家科技支撑计划(2006BAD08A02);河北省自然科学基金项目(C2006000751)

摘　　要：室内对中红侧沟茧蜂Microplitis mediator滞育诱导的光周期反应及敏感光照虫态进行了研究。结果表明：在16℃和18℃温度下,当光周期为10L∶14D时,中红侧沟茧蜂的滞育率最高为98%和87.8%;其次是光周期为8L∶16D时,滞育率为78.7%和73%;光周期为12L∶12D时,滞育率为55.8%和50.8%;而在全光照LL,光周期22L∶2D,20L∶4D,18L∶6D,16L∶8D,14L∶10D,2L∶22D和全黑暗DD时的滞育率均为0。中红侧沟茧蜂属于典型的长日照发育型,在16℃时诱导滞育的临界光周期是7.03L∶16.97D和12.21L∶11.79D;在18℃时是6.75L∶17.25D和12.03L∶11.97D。16℃时中红侧沟茧蜂对光照反应最敏感时期为2龄幼虫第5-8天,2龄幼虫第1-4,9-12和13-16天及3龄期次之,卵期和1龄幼虫不敏感。Photoperiod response of diapause induction and the sensitive stage to photoperiod was investigated in the solitary endoparasitoid Microplitis mediator （Haliday） under 16℃ and 18℃ in the laboratory. The photoperiodic response curves in M, mediator showed that this endoparasitoid is a typical long-day species with a critical day length of 12.21 h at 16℃ and 12.03 h at 18℃. The short day length of 10 h resulted in the highest rate of diapause （98.0% at 16℃ and 87.7% at 18℃ ）. The percentage of diapause was 0 when light length ≥ 14 h or ≤2 h. The sensitive stage to short light of 10 h at 16℃ was the 2nd instar （Day 5 - 8）, while the 2nd instar （Day 1 - 4, Day 9 - 12, and Day 13 - 16） and the 3rd instar were the less sensitive stages, and the egg stage and the 1st instar were the insensitive stages to short light.

关 键 词：中红侧沟茧蜂 滞育 光周期 敏感虫期 长日照发育型 

分 类 号：Q968[生物学—昆虫学]