Electroantennographic and behavioral responses of adults of raspberry weevil Aegorhinus superciliosus (Coleoptera: Curculionidae) to odors released from conspecific females.

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  • Additional Information
    • Source:
      Publisher: Oxford University Press Country of Publication: England NLM ID: 7502320 Publication Model: Print Cited Medium: Internet ISSN: 1938-2936 (Electronic) Linking ISSN: 0046225X NLM ISO Abbreviation: Environ Entomol Subsets: MEDLINE
    • Publication Information:
      Publication: Oxford : Oxford University Press
      Original Publication: College Park, Md., Entomological Society of America.
    • Subject Terms:
      Sexual Behavior, Animal*; Arthropod Antennae/*physiology ; Sex Attractants/*isolation & purification ; Weevils/*physiology; Animals ; Female ; Male ; Odorants ; Volatile Organic Compounds/chemistry ; Weevils/chemistry
    • Abstract:
      The raspberry weevil, Aegorhinus superciliosus (Guérin) (Coleoptera: Curculionidae), is the most important pest in blueberry and raspberry fields in the south of Chile. In this study, we investigated the electroantennographic and behavioral responses of A. superciliosus to semiochemicals released from conspecific individual adults, with particular attention to male attraction to females. Odors released from females significantly attracted males in a Y-tube olfactometer. Gas chromatographic and mass spectral analysis of female volatile extracts revealed the presence of limonene and α-pinene. Electroantennogram recordings from both sexes indicated that males of A. superciliosus possess olfactory sensitivity for the R isomer of limonene and α-pinene, whereas females only perceived R-limonene. Behavioral assays using synthetic compounds showed that only R-limonene elicited an attraction response from male weevils. Field experiments confirmed the laboratory results, showing that R-limonene was attractive to weevils. This is the first report of intraspecific chemical communication in this weevil. We discuss the origin of these compounds, their possible role in the sexual behavior of this species, and their potential use in a pest control strategy.
    • Accession Number:
      0 (Sex Attractants)
      0 (Volatile Organic Compounds)
    • Publication Date:
      Date Created: 20111201 Date Completed: 20120209 Latest Revision: 20161125
    • Publication Date:
      20231215
    • Accession Number:
      10.1603/EN10009
    • Accession Number:
      22127178