Control effect and field application of four predatory Orius species on Megalurothrips usitatus (Thysanoptera: Thripidae)

Author:

Dai Xiaoyan123ORCID,Wang Ruijuan123,Liu Yan123,Su Long123,Yin Zhenjuan4,Wu Mingfei5,Chen Hao123,Zheng Li123,Zhai Yifan123ORCID

Affiliation:

1. Institute of Plant Protection, Shandong Academy of Agricultural Sciences , Jinan 250100 , China

2. Key Laboratory of Natural Enemies Insects, Ministry of Agriculture and Rural Affairs , Jinan 250100 , China

3. MARA-CABI Joint Laboratory for Bio-Safety Shandong Sub-Center , Jinan 250100 , China

4. Institute of Entomology, Guizhou University , Guiyang 550025 , China

5. Dezhou Academy of Agricultural Sciences , Dezhou 253000 , China

Abstract

Abstract Megalurothrips usitatus (Bagrall) is one of the most important pests of cowpea, Vigna unguiculata (Linn.) Walp in South China. Four Orius species, including Orius minutus (L.), Orius nagaii (Yasunaga), Orius sauteri (Poppius), and Orius strigicollis (Poppius), have been commercially produced and widely used as natural enemies of pests in China. In this study, we evaluated the control efficiency of these Orius species on M. usitatus in tropical Hainan Province, China, by recording the survival rates, developmental times, and predation effects in laboratory and semi-field conditions. Laboratory experiments showed that all these 4 Orius species preyed on M. usitatus under the experimental temperatures (25, 30, and 35 °C), and O. strigicollis exhibited the highest survival rate and predation effect. Semi-field cage experiments showed that the control effect of 4 Orius species on M. usitatus was significantly higher than that under normal chemical control, with O. strigicollis having the highest effect. Greenhouse experiments in Hainan Province, China, confirmed that O. strigicollis had a significant control effect on M. usitatus. Our study indicated that O. strigicollis has a significant potential for the control of M. usitatus in cowpea fields in southern China.

Funder

National Key R&D Program of China

Shandong Provincial Natural Science Foundation

Shandong Provincial Agriculture Research System

Taishan Scholars program of Shandong Province

Shandong Provincial Key R&D Program

Publisher

Oxford University Press (OUP)

Reference29 articles.

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2. Immune-related genes of Megalurothrips usitatus (Bagrall) against Beauveria brongniartii and Akanthomyces attenuatus identified using RNA sequencing;Chen,2021

3. Insecticide susceptibility and detoxification enzyme activity of Frankliniella occidentalis under three habitat conditions;Fan,2023

4. Detection of putative mutation I873S in the sodium channel of Megalurothrips usitatus (Bagnall) which may be associated with pyrethroid resistance;Gao,2023

5. Functional response of Orius albidipennis (Hemiptera: Anthocoridae) to Megalurothrips sjostedti (Thysanoptera: Thripidae);Gitonga,2002

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