山西农业大学学报（自然科学版）2026，Vol.46Issue(4)：127-135,9.DOI:10.13842/j.cnki.issn1671-8151.202601029
明小花蝽对番茄潜叶蛾卵及低龄幼虫的捕食能力评价
Evaluation of the predatory ability of Orius nagaii against the eggs and young larvae of Tuta absoluta
摘要
Abstract
[Objective]The tomato leafminer,Tuta absoluta(Meyrick)(Lepidoptera:Gelechiidae),is a devastating invasive pest of solanaceous crops that poses a severe threat to tomato industry in China.To advance green control strategies against T.absoluta and screen for highly effective predatory natural enemies,this study systematically evaluated the predatory and biocon-trol capacities of Orius nagaii.[Method]Under laboratory conditions,using caged tomato seedlings as the host plant,we mea-sured the functional responses of 4th-5th instar nymphs and adult females and males of O.nagaii preying upon the eggs and 1st-2nd instar larvae of T.absoluta across varying prey densities.The intraspecific interference effect of O.nagaii was also evaluated.Furthermore,using T.absoluta eggs,Bemisia tabaci,Aphis glycines,and Frankliniella occidentalis as target preys,we tested the feeding preference of this natural enemy under multi-prey coexistence scenarios.[Result]The predatory functional response of O.nagaii to T.absoluta eggs fitted the Holling type Ⅲ model,while its response to 1st-2nd instar lar-vae fitted the Holling type Ⅱ model.Female adults exhibited the highest instantaneous attack rate(0.287 5)and the shortest handling time(0.015 d)on eggs,with a theoretical maximum daily predation capacity of 13.47 eggs.As the density of O.na-gaii increased,the total predation rate rose while individual predation declined,indicating a distinct intraspecific interference ef-fect.In multi-prey choice tests,O.nagaii showed a significant feeding preference for T.absoluta eggs.[Conclusion]O.na-gaii exhibited strong predatory capability,a significant feeding preference,and excellent prey adaptability toward the eggs and young larvae of T.absoluta,making it is a highly promising native natural enemy resource for green control of this pest in Chi-na.This study provided a theoretical basis for field release and application of O.nagaii.We recommended prioritizing the re-lease of adults or late-instar nymphs during the egg to early-instar larval stages of T.absoluta,alongside properly managing re-lease densities to fully optimize their pest control efficacy.关键词
明小花蝽/番茄潜叶蛾/捕食功能反应/干扰效应/取食偏好/生物防治Key words
Orius nagaii/Tuta absoluta/Predatory functional response/Interference effect/Predation preference/Biological control分类
农业科技引用本文复制引用
黄艺博,范阿宁,周海航,王瀚樟,张礼生,李先伟..明小花蝽对番茄潜叶蛾卵及低龄幼虫的捕食能力评价[J].山西农业大学学报（自然科学版）,2026,46(4):127-135,9.基金项目
东方英才项目(T2024107) （T2024107）
国家重点研发计划项目(2023YFE0123000) （2023YFE0123000）
山西省科技创新人才团队(领军)专项计划(202304051001006) （领军）
中国农科院创新工程 （）
