title: Chemical investigations of volatile kairomones produced by Hyphantria cunea (Drury), a host of the parasitoid Chouioia cunea Yang.
abstract: In tritrophic 'plants-herbivores-natural enemies' systems, there are relatively few reports concerning the role(s) of kairomones in pupal parasitism. Chouioia cunea Yang (Hymenoptera: Eulophidae), an endoparasitic chalcid wasp, parasitizes pupae of the fall webworm (Hyphantria cunea Drury). The role of host-related kairomones was investigated using electroantennogram (EAG) and behavioral techniques. Chemicals from some host stages (pupae) and host by-products (frass), induced arrestment behavior of female parasitoids, while chemicals from prepupae, were inactive. Gas chromatography-mass spectrometry analysis of volatiles collected from pupae, frass and prepupae using solid-phase microextration revealed seven compounds with carbon chain lengths ranging from C4 to C20. All of the chemicals elicited significant EAG responses in C. cunea. Y-tube olfactometer bioassays demonstrated a significant positive response of mated female C. cunea to 1-dodecene. These data provide a better understanding of the host location mechanisms of pupal parasitoid.
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: G
authors.initials: G
authors.lastname: Zhu
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: L
authors.initials: L
authors.lastname: Pan
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: F
authors.initials: F
authors.lastname: Wang
authors.affiliation: Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University,Tianjin 300387,China.
authors.forename: Y
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: W
authors.initials: W
authors.lastname: Fan
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: Q
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Natural Enemy Breeding Center of Luohe Central South Forestry,Henan 462000,China.
authors.forename: S
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China.
authors.forename: M
authors.initials: M
authors.lastname: Li
mesh_terms: D000818:Animals; D002633:Chemotaxis; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D007814:Larva / Q000469:parasitology / Q000502:physiology; D009036:Moths / Q000187:drug effects / Q000469:parasitology* / Q000502:physiology*; D010675:Pheromones / Q000378:metabolism*; D011679:Pupa / Q000469:parasitology / Q000502:physiology; D055549:Volatile Organic Compounds / Q000378:metabolism; D014863:Wasps / Q000502:physiology*
chemical_list: D010675:Pheromones; D055549:Volatile Organic Compounds
keywords: 
                 Chouioia cunea
              ; 
                 Hyphantria cunea
              ; Kairomones; pupae parasitoid