| 斑痣悬茧蜂对斜纹夜蛾不同虫龄幼虫的选择及后代发育表现 |
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| 引用本文： | 陈雯,李保平,孟玲.斑痣悬茧蜂对斜纹夜蛾不同虫龄幼虫的选择及后代发育表现[J].生态学杂志,2011,30(7):1317. |
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| 作者姓名： | 陈雯 李保平 孟玲 |
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| 作者单位： | 南京农业大学植物保护学院,南京210095;农作物生物灾害综合治理教育部重点实验室,南京农业大学,南京210095 |
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| 基金项目： | 国家自然科学基金项目(30871670); 公益性行业(农业)科研专项(201103002)资助 |
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| 摘 要： | 为探究容性寄生蜂对不同龄期寄主幼虫的选择性及其子代蜂发育表现的关联,通过双选试验观察了斑痣悬茧蜂(Meteorus pulchricornis)对斜纹夜蛾(Spodoptera litura)不同虫龄幼虫的寄生选择,并观察了与子代蜂适合度相关的特性表现.结果表明:斑痣悬茧蜂在4龄与5龄之间未表现出偏好,在2龄和3龄、3龄和4龄之间显著偏好较低虫龄;结茧率在不同寄主虫龄间无显著差异,羽化率随寄主虫龄增大而减小,寄生2、3龄幼虫的子代蜂显著高于寄生5龄;寄生5龄幼虫的子代蜂死亡率比寄生2龄的高2.5倍,比寄生3龄的高5.4倍.寄生3龄幼虫的子代蜂发育历期最短(11.9 d),比寄生4龄幼虫的短6.8 d,比寄生2龄幼虫的短4.7 d;子代蜂体型大小在寄生的寄主虫龄间无显著差异.根据研究结果推测,斑痣悬茧蜂在寄生时可能不是根据寄主龄期来评价寄主品质,而是基于寄主体型大小进行评价.
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| 关 键 词： | 寄主偏好 子代表现 生活史策略 行为生态学 茧蜂科 |
Host selection and offspring developmental performances of Meteorus pulchricornis on Spodoptera litura larval instars |
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| CHEN Wen,LI Bao-ping,MENG Ling.Host selection and offspring developmental performances of Meteorus pulchricornis on Spodoptera litura larval instars[J].Chinese Journal of Ecology,2011,30(7):1317. |
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| Authors: | CHEN Wen LI Bao-ping MENG Ling |
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| Institution: | CHEN Wen1,2,LI Bao-ping1,MENG Ling1,2(1College of Plant Protection,Nanjing Agricultural University,Nanjing 210095,China,2Key Laboratory of Integrated Management of Crop Diseases and Pests,Ministry of Education,China) |
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| Abstract: | A dual-choice experiment was conducted to observe the host selection and offspring developmental performances of koinobiontic parasitoid Meteorus pulchricornis on Spodoptera litura larval instars(except the first and last instars).The parasitoid showed no preference for L4 and L5,but exhibited preference to lower instar larvae in L2 vs.L3 and L3 vs.L4.No significant difference was observed in the cocoon formation rate among the offspring parasitoids from different host instars at oviposition.The emergence r... |
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| Keywords: | host preference offspring performance life history strategy behavioral ecology Braconidae |
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