Species and Occurrence of Parasitoids of Cnaphalocrocis medinalis in Nanning, Guangxi, China

• 作者: Li Jinfeng Qin Peisheng Ren Liyun Xian Zhenhua
• 来源期刊: Plant Diseases and Pests(植物病虫害研究：英文版)
• 学科: 农学
• 关键词: 广西壮族自治区 稻纵卷叶螟 寄生蜂 南宁 中国 姬小蜂科 化学农药 小蜂总科
• 年，卷（期）: 2015,（2）
• 页码范围: 9-11
• 页数: 3页
• 分类号: S435.112.1

摘要

[Objective]To specify the parasitoid species of Cnaphalocrocis medinalis in Nanning,Guangxi Zhuang Autonomous Region,and provide theoretic references for the reasonable utilization and using natural enemy.[Method]Field investigation and indoor rearing observation were adopted to figure out species and quantity of parasitoids of C.medinalisin Nanning in 2011-2013.[Result]There are 19 parasitoid species of C.medinalisin Nanning,belonging to Ichneamonoidea,Chalcidoidea.Of Ichneamonoidea,there are 11 species from Ichneumonidae and Braconidae.Of Chalcidoidea,there are 8 species from Chalcididae,Eulophidae,Elasmidae,Trichogrammatidae and Encyrtidae.Among these species,Stenomesius maculatus Liao and Apanteles cypris Nixon are dominant parasitoids in larval stage.In natural control conditions,S.maculatus Liao is most-widely distributed species with the most population,especially in the first half year,accounting for 89.7%of the total parasitoid quantity;in pesticide application field,the quantity of S.maculatus Liao accounts for 69.1%of the total parasitoid quantity,and in nonpesticide field,it accounts for 78.5%.[Conclusion]Application of chemical pesticide has serious impact on the natural populations of parasitoids,therefore,chemical pesticides should be applied reasonably to ensure the survival of parasitoids.