首页|A mite parasitoid,Pyemotes zhonghuajia,negatively impacts the fitness traits and immune response of the fall armyworm,Spodoptera frugiperda

A mite parasitoid,Pyemotes zhonghuajia,negatively impacts the fitness traits and immune response of the fall armyworm,Spodoptera frugiperda

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Parasitoids are key regulators in ecological communities and widely used as agents in biocontrol programmes.The fall armyworm,Spodoptera frugiperda,recently invaded multiple continents and caused substantial economic losses in agriculture.Pyemotes zhonghuajia,a newly identified mite parasitoid,has shown potential for controlling various agricultural insect pests.Therefore,this study tested the performance of P.zhonghuajia in parasitising S.frugiperda.We also investigated the sublethal effects of parasitism by P.zhonghuajia on host fitness traits,transgenerational impacts,and cellular and humoral immunity.Our result showed that the fifth-instar larvae of S.frugiperda parasitised by 40 P.zhonghuajia were all dead(i.e.,a lethal effect),while parasitism by 5 or 10 P.zhonghuajia was considered sublethal since many S.frugiperda survived to adulthood and produced offspring after mating.The sublethal influences from parasitism by P.zhonghuajia resulted in reduced pupal weight,adult emergence rate and fecundity,but increased developmental time and longevity.Parasitism at both lethal(40 mites)and sublethal(10 mites)levels impaired the cellular and humoral immunity of S.frugiperda.This study presents the first empirical evidence that mite parasitoids can negatively influence host immunity.Moreover,it provides insights into the biocontrol potential of mite parasitoids and their interactions with hosts.

Pyemotes zhonghuajiaSpodoptera frugiperdaimmunityparasitically-induced influencebiocontrolparasitoid

Yanfei Song、Tai'an Tian、Yichai Chen、Keshi Zhang、Maofa Yang、Jianfeng Liu

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Institute of Entomology,Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region,Guizhou University/Scientific Observing and Experiment Station of Crop Pests in Guiyang,Ministry of Agriculture and Rural Affairs,Guiyang 550025,China

Administration of Guizhou Fanjingshan National Nature Reserve,Jiangkou 554400,China

Centre for Biodiversity and Biosecurity,School of Biological Sciences,The University of Auckland,Auckland 1072,New Zealand

College of Tobacco Science,Guizhou University,Guiyang 550025,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHighlevel Talent Innovation and Entrepreneurship Funding Project in Guizhou Province,ChinaGuizhou Provincial Science and Technology Innovation Talent Team Project,ChinaSystematic and Applied Acarology Society International Joint Project,EnglandGrowth Project of Youth Talent in Ordinary Universities in Guizhou Province,ChinaNatural Science Special Project in Guizhou University,China

3206063732260708202101Qian Ke He Pingtai Rencai-CXTD20210042022012021079202002

2024

10.1016/j.jia.2023.05.022

农业科学学报(英文)
中国农业科学院农业信息研究所

农业科学学报(英文)

CSTPCD
影响因子：0.576
ISSN：2095-3119
年,卷(期)：2024.23(1)
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