| 杨 帅 #, 张龙喜 #, 赵 旭, 霍梁宵, 周金成 *, 董 辉 *.夜蛾黑卵蜂雌雄蜂鉴别方法及雌蜂寄生草地贪夜蛾卵的行为特征[J].植物保护,2020,46(1):55-58. |
| 夜蛾黑卵蜂雌雄蜂鉴别方法及雌蜂寄生草地贪夜蛾卵的行为特征 |
| A method for sex identification of Telenomus remus wasps and its parasitic behavioral characteristics against Spodoptera frugiperda eggs |
| 投稿时间：2019-09-17 修订日期：2019-09-26 |
| DOI：DOI:10.16688/j.zwbh.2019496 |
| 中文关键词: 草地贪夜蛾 夜蛾黑卵蜂 寄生行为 卵寄生蜂 生物防治 |
| 英文关键词:Spodoptera frugiperda Telenomus remus parasitic behavior egg parasitoid wasp biological control |
| 基金项目:国家重点研发计划（2017YFD0201805） |
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| 中文摘要: |
| 夜蛾黑卵蜂 Telenomus remus 被认为是草地贪夜蛾 Spodoptera frugiperda 卵期的高效寄生蜂。明确夜蛾黑卵蜂基本生物学特征将为其繁育及应用提供重要参考。本研究对雌、雄蜂外部形态及雌蜂寄生行为进行了观察。结果显示,1)除雌蜂产卵器和雄蜂外生殖器等第一性征外,夜蛾黑卵蜂雌、雄蜂个体还具备一些典型的第二性征,可通过触角环节数量、触角棒节和柄节形态以及足和触角的颜色进行区分。2)在同一卵块上,雄蜂先于雌蜂羽化,并撕咬寄主卵壳协助雌蜂羽化;雌蜂羽化后雄蜂会立即求偶并与其交配。3)夜蛾黑卵蜂雌蜂通过利用寄主卵表鳞毛空隙、主动清理鳞毛和移动表层卵粒3种行为策略实现对大部分草地贪夜蛾卵的寄生。本研究建立了夜蛾黑卵蜂雌、雄蜂的鉴别方法,并明确了雌蜂应对夜蛾黑卵蜂卵表结构防御的行为策略。 |
| 英文摘要: |
| Telenomus remus has been considered as an effective biological control agent against Spodoptera frugiperda eggs. The investigation of basic biological characteristics of T. remus will supply reference for the mass rearing and application of T. remus . In this study, we described the characteristics of parasitic behavior of T. remus females and the morphological difference between female and male T. remus . The results showed as follows: 1) Except primary sexual characteristics, the sex of T. remus wasps could be determined by secondary sexual characteristics including the number of antennal segments, morphology of antennal club and scape, color of leg and antenna. 2) Male wasps emerged earlier than female wasps in the same egg mass, and could help the emergence of female wasps by biting the shell of host eggs. Males could mate with females rapidly once females emerged. 3) Female wasps could parasite S. frugiperda eggs through three typical behavior strategies including seeking and using gaps among scale hair scales, cleaning the scale hair, and moving host eggs on the surface. In this study, we established a method for sex identification of T. remus wasps and revealed the behavioral strategy of T. remus females handling the morphological defense of S. frugiperda eggs. |
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