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Author (up) Shimomura, K.; Nojima, S.; Yajima, S.; Ohsawa, K. url  doi
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  Title Homofarnesals: female sex attractant pheromone components of the southern cowpea weevil, Callosobruchus chinensis Type Journal Article
  Year 2008 Publication Journal of Chemical Ecology Abbreviated Journal J Chem Ecol  
  Volume 34 Issue 4 Pages 467-477  
  Keywords Animals; Chromatography, Gas; Chromatography, High Pressure Liquid; Farnesol/*analogs & derivatives/metabolism; Female; Humans; Male; Sex Attractants/*physiology; Weevils/*physiology  
  Abstract The southern cowpea weevil, Callosobruchus chinensis (Coleoptera: Bruchidae), is a major pest of stored legumes in warm temperate and tropical climates. The female sex attractant pheromone was extracted from filter-paper shelters taken from containers that housed virgin females. The extracts were purified by various chromatographic techniques, and the biologically active components in the fractions were screened by gas chromatographic-electroantennographic detection analysis with male antennae. Two compounds that elicited electrophysiological responses were isolated, and gas chromatography-mass spectrometry, nuclear magnetic resonance, and micro-chemical analyses suggested that the active compounds were homofarnesals, (2Z,6E)- and (2E,6E)-7-ethyl-3,11-dimethyl-2,6,10-dodecatrienals. Males of C. chinensis were significantly attracted to filter paper discs loaded with the synthetic compounds at 0.01-0.1 ng compared to solvent control in a Y-tube olfactometer assay. These pheromone components represent unique chemical structures within the genus Callosobruchus.  
  Address Department of Biosciences, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan. k3shimom@nodai.ac.jp  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0098-0331 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:18351422 Approved no  
  Call Number GGC @ adcosta @ Serial 36  
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