EAG and olfactory responses of <em>Cylas formicarius</em> (Coleoptera: Curculionidae) to volatiles from plants of different sweetpotato cultivars</br>  
昆虫学报
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ACTA ENTOMOLOGICA SINICA  2017, Vol. 60 Issue (11): 1285-1291    DOI: 10.16380/j.kcxb.2017.11.006
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EAG and olfactory responses of Cylas formicarius (Coleoptera: Curculionidae) to volatiles from plants of different sweetpotato cultivars
 
JIA Xiao-Jian, MA Juan, GAO Bo, LI Xiu-Hua, ZHANG Tao, CHEN Shu-Long, WANG Rong-Yan*
 (Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Integrated Pest Management Centre of Hebei Province, Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding, Hebei 071000, China)
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Abstract 【Aim】 This study aims to screen plant volatiles attracting Cylas formicarius. 【Methods】 Plant volatiles of five sweetpotato cultivars were collected by headspace adsorption device and then identified and quantified on GC-MS. EAG response and taxis of C. formicarius adults to candidate volatiles from the sweetpotato plants were assayed. And the olfactory responses of C. formicarius adults to volatiles emanating from stems and leaves of five sweetpotato cultivars were measured by using a Y-tube olfactometer. 【Results】 The GC-MS results showed that the types and contents of volatiles collected from the five sweetpotato cultivars were different. Seven candidate volatiles (ocimene, limonene, nonanal, β-caryophyllene, humulene, farnesene, and (Z)-3-hexen-1-olacetate) elicited EAG responses in both male and female adults of C. formicarius. The EAG responses of female adults of C. formicarius to limonene, nonanal and β-caryophyllene were significantly higher than to the other chemicals tested, while those of males to ocimene, limonene and humulene were significantly higher than to other chemicals tested. In taxis assay, limonene and nonanal attracted male adults, and humulene and limonene attracted females. The response rates of C. formicarius adults to volatiles from stems and leaves of the five sweetpotato cultivars were 40.90%~65.21%, and the volatiles emitted from sweetpotato stems and leaves of the five cultivars had no significant attractivity to all adults (P>0.05). 【Conclusion】 Male and female adults of C. formicarius show different EAG and olfactory behavioral responses to the volatiles from the sweetpotato, and the volatile limonene is closely related to the preference of C. formicarius.
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JIA Xiao-Jian
MA Juan
GAO Bo
LI Xiu-Hua
ZHANG Tao
CHEN Shu-Long
WANG Rong-Yan
Key wordsCylas formicarius; host plant   sweetpotato   plant volatile   EAG response   olfactory response     
Cite this article:   
JIA Xiao-Jian,MA Juan,GAO Bo et al. EAG and olfactory responses of Cylas formicarius (Coleoptera: Curculionidae) to volatiles from plants of different sweetpotato cultivars
 [J]. ACTA ENTOMOLOGICA SINICA, 2017, 60(11): 1285-1291.
URL:  
http://www.insect.org.cn/EN/10.16380/j.kcxb.2017.11.006      or     http://www.insect.org.cn/EN/Y2017/V60/I11/1285
 
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