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平腹小蜂滞育诱导研究 预览

The Study on Diapause Induction in Anastatus japonicus Ashmead
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摘要 平腹小蜂是果树蝽类害虫的优势天敌,对重要果树蝽类害虫具有较强的控制作用,商品化生产的平腹小蜂已广泛应用于多种果树蝽类害虫的生物防治。为精确控制平腹小蜂的羽化时间和提高防控效果,本文对室内不同温度条件下不同龄期平腹小蜂的滞育诱导进行了初步研究。结果表明:平腹小蜂的滞育虫态为预蛹,从卵期开始至预蛹前期,对其进行低温和短光照刺激均可以诱导其进入滞育。短光照(6L:18D),17℃条件下,处于卵期、1~2龄期和2~3龄期的平腹小蜂发育至预蛹期,滞育率分别为76.37%、81.51%和60.28%,其中卵期开始诱导和1~2龄开始诱导的处理之间,滞育率无显著性差异,且卵期处理组和1~2龄处理组的滞育率显著高于2~3龄处理组的滞育率;短光照条件下,当温度降低到11℃和14℃,对1~2龄和2~3龄期的平腹小蜂诱导滞育,滞育率显著下降到20%以下。综合而言,短光照条件下,温度在诱导平腹小蜂进入滞育中起着至关重要的作用。不同龄期平腹小蜂在17℃持续处理后,预蛹的滞育率不同。在本研究中,17℃结合短光照,对卵期和1~2龄期的平腹小蜂进行诱导,可获得较高的滞育率。 As the major natural enemy of stink bugs,A.japonicus is very effective in suppressing stink bugs populations,and has been commercially used in biological control of stink bugs.In order to accurately control the adult emergence of A.japonicus and improve its control efficacy,the research on the diapause induction of A.japonicus were performed in this study under different temperatures and development stages.The results indicated that A.japonicas diapause as pre-pupa.Low temperature and short day length could induce diapausein A.japonicus from egg to 3rd instar larva.When the egg,1—2 instar and 2—3 instar larva of A.japonicus were exposed to a photoperiod of 6 L:18 D at 17℃,they would enter into diapause as pre-pupa,the incidence of diapause were 76.37%,81.51%and 60.28%,respectively.There was no significant difference in the diapause incidence between treatment with egg and 1—2 instar larva,but their diapause incidence was significantly higher than treatment with 2—3 instar larva.When 1—2 instar and 2—3 instar larva of A.japonicus were exposed to 11℃or 14℃,the diapause incidence decreased to less than 20%.Temperature plays a crucial role in A.japonicus diapause induction.The diapause incidence is different when A.japonicus were exposed to 17℃with different development stage.In this study,the higher diapause incidence was achieved in treatment with egg and 1—2 instar larva of A.japonicus under photoperiod of 6 L:18 D at 17℃.
作者 赵灿 夏玥 郭义 李梅 张宝鑫 李敦松 ZHAO Can;XIA Yue;GUO Yi;LI Mei;ZHANG Baoxin;LI Dunsong(Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High Technology for Plant Protection,Guangzhou 510640,China;State Key Laboratory for Biology of Plant Diseases and Insect Pests,Beijing 100193,China;Xinyang City Academy of Agricultural Sciences,Xinyang 464000,China)
出处 《中国生物防治学报》 CSCD 北大核心 2019年第2期282-287,共6页 Chinese Journal of Biological Control
基金 国家重点研发计划(2017YFE0104900) 植物病虫害生物学国家重点实验室开放基金(SKLOF201814) 广东省农业科学院院长基金(201930) 广东省科技计划项目(2017B020202001).
关键词 平腹小蜂 滞育 温度 龄期 Anastatus japonicus diapause temperature development stage
作者简介 赵灿,博士,助理研究员,E-mail:zhaocan@gdaas.cn;通信作者:张宝鑫,硕士,副研究员,E-mail:zhangbx@gdppri.cn;通信作者:李敦松,研究员,E-mail:dsli@gdppri.cn。
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