title: EAG and behavioral responses of Helicoverpa armigera males to volatiles from poplar leaves and their combinations with sex pheromone.
abstract: Electroantennogram (EAG) evaluation of selected compounds from wilted leaves of black poplar, Populus nigra, showed that phenyl acetaldehyde, methyl salicylate, (E)-2-hexenal elicited strong responses from male antennae of Helicoverpa armigera. When mixed with sex pheromone (Ph), some volatiles, e.g. phenyl acetaldehyde, benzyl alcohol, phenylethanol, methylsalicylate, linalool, benzaldehyde, (Z)-3-hexenol, (Z)-3-hexenylacetate, (Z)-6-nonenol, cineole, (E)-2-hexenal, and geraniol elicited stronger responses from male antennae than Ph alone. Wind tunnel bioassay demonstrated that various volatiles could either enhance or inhibit the effect of synthetic sex pheromone. (E)-2-hexenal, (Z)-3-hexenol and linalool in combination with Ph could not induce any male to land on source at all, whereas phenyl acetaldehyde, benzaldehyde, (Z)-6-nonenol and salicylaldehyde combined with Ph enhanced male response rates by 58.63%, 50.33%, 51.85% and 127.78%, respectively, compared to Ph alone. These results suggested that some volatiles should modify sex pheromone caused behavior and that some of them could possibly be used as a tool for disrupting mating or for enhancing the effect of synthetic sex pheromone in the field.
authors.affiliation: Institute of Plant Physiology and Ecology, Shanghai Institute of Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China. jydeng70@hotmail.com
authors.forename: Jian-Yu
authors.initials: JY
authors.lastname: Deng
authors.forename: Yong-Ping
authors.initials: YP
authors.lastname: Huang
authors.forename: Hong-Yi
authors.initials: HY
authors.lastname: Wei
authors.forename: Jia-Wei
authors.initials: JW
authors.lastname: Du
mesh_terms: D000818:Animals; D002633:Chemotaxis / Q000187:drug effects / Q000502:physiology; D004305:Dose-Response Relationship, Drug; D004338:Drug Combinations; D005426:Flight, Animal / Q000502:physiology; D007915:Lepidoptera / Q000187:drug effects* / Q000502:physiology*; D008297:Male; D009812:Odorants; D009930:Organic Chemicals / Q000494:pharmacology*; D010936:Plant Extracts / Q000378:metabolism; D018515:Plant Leaves / Q000378:metabolism*; D032107:Populus / Q000378:metabolism*; D012724:Sex Attractants / Q000494:pharmacology*; D012726:Sexual Behavior, Animal / Q000187:drug effects* / Q000502:physiology; D014835:Volatilization
chemical_list: D004338:Drug Combinations; D009930:Organic Chemicals; D010936:Plant Extracts; D012724:Sex Attractants