title: Semiochemicals of the Scarabaeinae: VI. Identification of EAD-active constituents of abdominal secretion of male dung beetle, Kheper nigroaeneus.
abstract: Using gas chromatography with flame ionization detection (FID) and electroantennographic detection (EAD) in parallel, and employing chiral and achiral capillary columns, three constituents of the abdominal sex-attracting secretion of male Kheper nigroaeneus dung beetles were found to elicit reproducible EAD responses in male and female K. nigroaeneus antennae. One of these constituents is present in the secretion in such a small quantity that it could not be detected by FID, and it was not identified. The other constituents were identified as 3-methylindole (skatole) and (R)-(+)-3-methylheptanoic acid.
authors.affiliation: Laboratory for Ecological Chemistry, Department of Chemistry, University of Stellenbosch, South Africa. lecus@maties.sun.ac.za
authors.forename: B V
authors.initials: BV
authors.lastname: Burger
authors.forename: W G B
authors.initials: WG
authors.lastname: Petersen
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D001517:Coleoptera / Q000502:physiology*; D004594:Electrophysiology; D005260:Female; D006538:Heptanoic Acids / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D008297:Male; D012724:Sex Attractants / Q000737:chemistry* / Q000494:pharmacology*; D012862:Skatole / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D006538:Heptanoic Acids; D012724:Sex Attractants; D012862:Skatole