Journal
JOURNAL OF CHEMICAL ECOLOGY
Volume 28, Issue 3, Pages 501-513Publisher
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1014583826875
Keywords
Scarabaeinae; Kheper nigroaeneus; dung beetle; sex attractant; sex pheromone; insect semiochemicals; EAD; electroantennographic detection
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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.
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