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Insect Sci

Title:		Electroantennogram and behavioral responses of Cotesia plutellae to plant volatiles
Author(s):		Yang G; Zhang YN; Gurr GM; Vasseur L; You MS;
Address:		"Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou, China. Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fujian Agriculture and Forestry University, Fuzhou, China. Key Laboratory of Integrated Pest Management of Fujian and Taiwan, China Ministry Agriculture, Fuzhou, China. Provincial Key Laboratory of Insect Ecology, Fuzhou, China. Putian Institute of Agricultural Sciences, Putian, China. Graham Centre, Charles Sturt University & NSW Department of Primary Industries, Orange, New South Wales, Australia. Department of Biological Sciences, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada"
Journal Title:		Insect Sci
Year:		2016
Volume:		20160218
Issue:		2
Page Number:		245 - 252
DOI:		10.1111/1744-7917.12308
ISSN/ISBN:		1744-7917 (Electronic) 1672-9609 (Linking)
Abstract:		"Plant volatiles have been demonstrated to play an important role in regulating the behavior of Cotesia plutellae, a major larval parasitoid of the diamondback moth (DBM), Plutella xylostella, but little is currently known about the function of each volatile and their mixtures. We selected 13 volatiles of the DBM host plant, a cruciferous vegetable, to study the electroantennogram (EAG) and behavioral responses of C. plutellae. EAG responses to each of the compounds generally increased with concentration. Strong EAG responses were to 100 muL/mL of trans-2-hexenal, benzaldehyde, nonanal and cis-3-hexenol, and 10 muL/mL of trans-2-hexenal and benzaldehyde with the strongest response provoked by trans-2-hexenal at 100 muL/mL. In the Y-tube olfactometer, C. plutellae, was significantly attracted by 1 muL/mL of trans-2-hexenal and benzaldehyde. beta-caryophyllene, cis-3-hexenol or trans-2-hexenal significantly attracted C. plutellae at 10 muL/mL, while nonanal, benzyl alcohol, cis-3-hexenol or benzyl cyanide at 100 muL/mL significantly attracted C. plutellae. Trans-2-hexenal significantly repelled C. plutellae at 100 muL/mL. EAG of C. plutellae showed strong responses to all mixtures made of five various compounds with mixtures 3 (trans-2-hexenal, benzaldehyde, nonanal, cis-3-hexenol, benzyl cyanide, farnesene, eucalyptol) and 4 (trans-2-hexenal, benzaldehyde, benzyl alcohol, (R)-(+)-limonene, beta-ionone, farnesene, eucalyptol) significantly attracting C. plutellae. These findings demonstrate that the behavior of C. plutellae can be affected either by individual compounds or mixtures of plant volatiles, suggesting a potential of using plant volatiles to improve the efficiency of this parasitoid for biocontrol of P. xylostella"
Keywords:		"Animals Arthropod Antennae/*physiology Electrophysiological Phenomena Host-Parasite Interactions Hymenoptera/*physiology Larva/growth & development/parasitology Moths/parasitology Pest Control, Biological Plants Volatile Organic Compounds/*metabolism Cote;"
Notes:		"MedlineYang, Guang Zhang, You-Nan Gurr, Geoff M Vasseur, Liette You, Min-Sheng eng Research Support, Non-U.S. Gov't Australia 2015/12/30 Insect Sci. 2016 Apr; 23(2):245-52. doi: 10.1111/1744-7917.12308. Epub 2016 Feb 18"