Host plant volatiles responsible for the invasion of Stenotus rubrovittatus (Heteroptera: Miridae) into paddy fields

M. Hori, M. Namatame

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    We investigated the attractiveness of synthetic volatile blends or individual volatiles of flowering rice panicles or flowering Scirpus juncoides spikelets to the sorghum plant bug Stenotus rubrovittatus (Matsumura). None of the individual chemicals tested attracted either sex of the bug. Synthetic volatile blends of flowering rice panicles composed of geranyl acetone, β-caryophyllene, n-decanal, methyl salicylate, β-elemene and n-tridecene attracted females. The synthetic blend of volatiles was just as attractive as natural flowering rice panicles to females. Other synthetic blends did not attract the bug. We sampled headspace volatiles from flowering S. juncoides spikelets with solid-phase microextraction and analysed them using gas chromatography-mass spectrometry. The main volatile emitted from S. juncoides was β-caryophyllene, one of the major volatile components of flowering rice panicles. β-Elemene was a common volatile found in flowering rice panicles and flowering S. juncoides spikelets. Therefore, we investigated the attractiveness of synthetic blends of flowering rice panicles and S. juncoides spikelets composed of β-caryophyllene and β-elemene. The synthetic blend of flowering S. juncoides spikelets significantly attracted males but not females. The synthetic blend of flowering rice panicles composed of β-caryophyllene and β-elemene did not attract either sex. These results suggest that β-caryophyllene and β-elemene are common active compounds responsible for attractiveness of flowering rice panicles and S. juncoides spikelets although some of the other volatile components act synergistically with these two compounds in natural plant odours.

    Original languageEnglish
    Pages (from-to)340-346
    Number of pages7
    JournalJournal of Applied Entomology
    Volume137
    Issue number5
    DOIs
    Publication statusPublished - 2013 Jun

    Keywords

    • Attractant
    • Oryza sativa
    • Pecky rice
    • Rice-ear bug
    • Scirpus juncoides
    • Sorghum plant bug
    • Synthetic volatile blend

    ASJC Scopus subject areas

    • Agronomy and Crop Science
    • Insect Science

    Fingerprint

    Dive into the research topics of 'Host plant volatiles responsible for the invasion of Stenotus rubrovittatus (Heteroptera: Miridae) into paddy fields'. Together they form a unique fingerprint.

    Cite this