Behavioral response of Panonychus citri (McGregor) (Acari: Tetranychidae) to synthetic chemicals and oils

PeerJ

article

Muhammad Asif Qayyoum¹  Zi-Wei Song¹  Bao-Xin Zhang¹  Dun-Song Li¹  Bilal Saeed Khan³ 

[1] Guangdong Provincial Key Laboratory of High Technology for Plant Protection/Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences;Department of Plant Protection, Ghazi University;Department of Entomology, University of Agriculture Faisalabad, Faisalabad

关键词: Leaf surfaces;    Lethal concentration;    Sub-lethal concentration;    Dispersal pattern;    Colonization;   

DOI  :  10.7717/peerj.10899

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Background Panonychus citri (McGregor) (Acari: Tetranychidae) population outbreaks after the citrus plantation’s chemical application is a common observation. Dispersal behavior is an essential tool to understand the secondary outbreak of P. citri population. Therefore, in the current study, the dispersal activity of P. citri was observed on the leaf surfaces of Citrus reticulata (Rutaceae) treated with SYP-9625, abamectin, vegetable oil, and EnSpray 99. Method Mites were released on the first (apex) leaf of the plant (adaxial surface) and data were recorded after 24 h. The treated, untreated, and half-treated data were analyzed by combining the leaf surfaces (adaxial right, adaxial left, abaxial right, and abaxial left). All experiments were performed in open-air environmental conditions. Results The maximum number of mites was captured on the un-treated or half-treated surfaces due to chemicals repellency. Chemical bioassays of the free-choice test showed that all treatments significantly increased the mortality of P. citri depending on application method and concentration. A significant number of mites repelled away from treated surfaces and within treated surfaces except adaxial left and abaxial right surfaces at LC30. In the no-choice test, SYP-9625 gave maximum mortality and dispersal by oils than others. No significant differences were observed within the adaxial and abaxial except abaxial surface at LC30. Therefore, the presence of tested acaricides interferes with P. citri dispersal within leaf surfaces of plantations depending on the mites released point and a preferred site for feeding.

【 授权许可】

CC BY