| Autor: |
Nurkomar, Ihsan, Pudjianto, Manuwoto, Syafrida, Buchori, Damayanti, Matsuyama, Shigeru, Taylor, DeMar, Kainoh, Yooichi |
| Předmět: |
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| Zdroj: |
Biocontrol Science & Technology; Jan2018, Vol. 28 Issue 1, p34-48, 15p |
| Abstrakt: |
In tritrophic interactions between cucumber plants, the cucumber mothDiaphania indicaSaunders (Lepidoptera: Crambidae) and a larval parasitoidApanteles taragamaeViereck (Hymenoptera: Braconidae), femaleA. taragamaemay use herbivore-induced plant volatiles (HIPVs) to locate their host. However, the specific compound or blend of chemicals attractingA. taragamaeremains unknown.In this study, differences in volatiles released from uninfested, mechanically damaged and host-infested cucumber plants were examined by the headspace volatile collection method. Responses of the larval parasitoidA. taragamaeto the volatile extracts were examined in a four-arm olfactometer. We also investigated the attraction of femaleA. taragamaeto a single compound identified as an HIPV from host-infested cucumber plants. Parasitoids discriminated between the volatiles from uninfested, host-infested and mechanically damaged plants. Chemical analysis of headspace volatiles from host-infested cucumber plants showed that (E,E)-α-farnesene was released as a major component (73.1%). When (E,E)-α-farnesene was tested alone in the range of 1.7–170 ng, female parasitoids responded to 17 ng only. Therefore, tritrophic interactions betweenA. taragamaeandD. indicaappear to be partly mediated by (E,E)-α-farnesene. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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