title: Electroantennographic and behavioral responses of adults of raspberry weevil Aegorhinus superciliosus (Coleoptera: Curculionidae) to odors released from conspecific females.
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.
authors: Doctorado y magister en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile.
authors: Ana
authors: A
authors: Mutis
authors: Leonardo
authors: L
authors: Parra
authors: Loreto
authors: L
authors: Manosalva
authors: Rubén
authors: R
authors: Palma
authors: Oscar
authors: O
authors: Candia
authors: Marcelo
authors: M
authors: Lizama
authors: Fernando
authors: F
authors: Pardo
authors: Fernando
authors: F
authors: Perich
authors: Andrés
authors: A
authors: Quiroz
mesh_terms: D000818:Animals; D057506:Arthropod Antennae / Q000502:physiology*; D005260:Female; D008297:Male; D009812:Odorants; D012724:Sex Attractants / Q000302:isolation & purification*; D012726:Sexual Behavior, Animal; D055549:Volatile Organic Compounds / Q000737:chemistry; D048889:Weevils / Q000737:chemistry / Q000502:physiology*
chemical_list: D012724:Sex Attractants; D055549:Volatile Organic Compounds