title: Enhanced attraction of Plutella xylostella (Lepidoptera: Plutellidae) to pheromone-baited traps with the addition of green leaf volatiles.
abstract: Diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), is one of the most serious pests of Brassicaceae crops worldwide. Electrophysiological and behavioral responses of P. xylostella to green leaf volatiles (GLVs) alone or together with its female sex pheromone were investigated in laboratory and field. GLVs 1-hexanol and (Z)-3-hexen-1-ol elicited strong electroantennographic responses from unmated male and female P. xylostella, whereas (Z)-3-hexenyl acetate only produced a relatively weak response. The behavioral responses of unmated moths to GLVs were further tested in Y-tube olfactometer experiments. (E)-2-Hexenal, (Z)-3-hexen-1-ol, and (Z)-3-hexenyl acetate induced attraction of males, reaching up to 50%, significantly higher than the response to the unbaited control arm. In field experiments conducted in 2008 and 2009, significantly more moths were captured in traps baited with synthetic sex pheromone with either (Z)-3-hexenyl acetate alone or a blend of (Z)-3-hexenyl acetate, (Z)-3-hexen-1-ol, and (E)-2-hexenal compared with sex pheromone alone and other blend mixtures. These results demonstrated that GLVs could be used to enhance the attraction of P. xylostella males to sex pheromone-baited traps.
authors.affiliation: Department of Entomology, China Agricultural University, Beijing 100193, China.
authors.forename: Pengyan
authors.initials: P
authors.lastname: Li
authors.forename: Junwei
authors.initials: J
authors.lastname: Zhu
authors.forename: Yuchuan
authors.initials: Y
authors.lastname: Qin
mesh_terms: D000818:Animals; D057506:Arthropod Antennae / Q000187:drug effects*; D001522:Behavior, Animal / Q000187:drug effects*; D005260:Female; D007300:Insect Control; D008297:Male; D009036:Moths / Q000187:drug effects*; D018515:Plant Leaves / Q000737:chemistry; D012724:Sex Attractants / Q000494:pharmacology*; D055549:Volatile Organic Compounds / Q000494:pharmacology*
chemical_list: D012724:Sex Attractants; D055549:Volatile Organic Compounds