Response of Trichogramma spp. (Hymenoptera: Trichogrammatidae) to Insecticides at Concentrations Sublethal to Cnaphalocrocis medinalis (Lepidoptera: Pyralidae)

Author:

Yang Yajun1,Wang Caiyun12,Xu Hongxing1,Tian Junce1,Lu Zhongxian1

Affiliation:

1. State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China

2. College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, China

Abstract

Abstract Trichogramma japonicum Ashmead (Hymenoptera: Trichogrammatidae) and Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae) are important parasitoids of Lepidopteran pests and are used for biological control in rice fields. In this study, the response of two of these parasitoids to four insecticides (chlorpyrifos, chlorantraniliprole, emamectin benzoate, and spinosad) were evaluated at target sublethal concentrations (TSC10 and TSC25, representing the LC10 and LC25 to the target pest) of the important rice pest, Cnaphalocrocis medinalis (Guenée). Each of the insecticides led to the mortality of adult T. japonicum and T. dendrolimi at TSC10 and TSC25, whereas no significant differences in the mortality of T. japonicum between TSC10 of chlorantraniliprole and control groups occurred. The parasitic capacity increased at F0 of T. japonicum at the two TSCs of spinosad treated host eggs, whereas the TSC10 was lower for emamectin benzoate at F1 for T. japonicum. The TSCs of chlorpyrifos treated host eggs negatively influenced the emergence rates of T. japonicum at F1. Emamectin benzoate with TSC10 reduced the female ratio of T. japonicum at F1. For T. dendrolimi, the TSCs of chlorpyrifos treated host eggs negatively influenced the emergence rates at F1. These findings indicate that T. japonicum and T. dendrolimi are affected by insecticides at TSCs, and among the four insecticides, chlorantraniliprole had the lowest mortality rates for T. japonicum and T. dendrolimi at TSCs.

Funder

National Key Research and Development Program of China

China Agriculture Research System

Publisher

Oxford University Press (OUP)

Subject

Insect Science,Ecology,General Medicine

Reference49 articles.

1. The rice Cnaphalocrocis and Marasmia (Lepidoptera: Pyralidae) leaffolder complex in the Philippines: taxonomy, bionomics, and control;Barrion;Phillipines Entomol,1991

2. Field evaluation of the egg parasitoid, Trichogramma japonicum Ash. (Hym. Trichogrammatidae) against the rice leaf folder, Cnaphalocrocis medinalis (Guen.) (Lep. Pyralidae) in India;Bentur,2010

3. Effect of different insecticides on adult emergence of Trichogramma chilonis (Ishii);Bhargavi;Int. J. Plant Prot,2017

4. Effects of different insecticides on parasitism of host eggs by Trichogramma pretiosum Riley;Bull;Southwest. Entomol,1983

5. Insect-resistant genetically modified rice in China: from research to commercialization;Chen;Annu. Rev. Entomol,2011

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3