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《Chinese Journal of Ecology》 2014-05
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Electroantennogram and behavioral responses of Tomicus minor(Hartig)(Coleoptera:Scolytidae) to plant volatiles

WANG Hong-wei;YANG Wei;YANG Hua;YANG Chun-ping;ZHU Xiao-qing;LIU Feng-jian;JIANG Li-hua;SHAN Chun-yan;Provincial Laboratory of Forest Conservation,Sichuan Agricultural University;Forestry Bureau of Luding County;  
In order to screen out the effective compounds for preparation of attractants to trap female and male Tomicus minor( Hartig),the electroantennogram( EAG) and behavioral responses of female and male adults of T. minor to volatiles of its plant host,Pinus yunnanensis Franchet were tested. The results showed that all the 9 tested plant volatiles could induce the EAG responses at 10 g·L- 1compared with the control,and the EAG responses of the antennas caused by the different volatiles had significant differences( P 0. 05). The female and male adults of T. minor exhibited strong EAG responses to( +)-α-pinene,( +)-limonene,( +)-3-carene,β-pinene and terpinolene; In the dose response tests,the EAG responses of female and male adults to( +)-α-pinene,( +)-limonene,( +)-3-carene and β-pinene intensified with the increasing concentration. When the concentration increased to 10 g·L- 1,the EAG response was the strongest; however,the females and males showed the strongest EAG responses to terpinolene at the concentration of 1 g·L- 1. Furthermore,T. minor showed no distinct directional behavior to the( +)-limonene; however,( +)-α-pinene,β-pinene,( +)-3-carene and terpinolene could obviously allure the females and males. The Duncan's multiple range test for the behavioral response of females and males to the five plant volatiles showed that( +)-α-pinene had the greatest attracting effect on females and males at 10 g·L- 1concentration. Our study provides a reference for developing attractive chemicals for T. minor in forests.
【Fund】: “211工程”双支计划项目;; 长江上游生态林业工程建设项目;; 四川农业大学研究生社会实践与科技服务团项目资助
【CateGory Index】: S763.38
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