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J Chem Ecol

Title:		Alpha-acaridial a female sex pheromone from an alarm pheromone emilting mite Rhizoglyphus robini
Author(s):		Mizoguchi A; Mori N; Nishida R; Kuwahara Y;
Address:		"Laboratory of Chemical Ecology, Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan"
Journal Title:		J Chem Ecol
Year:		2003
Volume:		29
Issue:		7
Page Number:		1681 - 1690
DOI:		10.1023/a:1024235100289
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"The female sex pheromone of Rhizoglyphus robini Claparede (Astigmata: Acaridae) was identified as alpha-acaridial [2(E)-(4-methyl-3-pentenyl)-butenedial], which stimulated males sexually and enhanced the frequency of male mounting behavior. Although a hexane extract of females manifested alarm pheromone activity against tested males due to the presence of the alarm pheromone neryl formate, silica gel column fractions containing alpha-acaridial evoked increased mounting behavior by males at a dose of 0.1 female equivalent. Synthetic alpha-acaridial at a dose of 10 ng showed a peak of activity as a sex pheromone, with a convex dose-response relationship. Its content was determined to be 388 +/- 244 ng per female and 163 +/- 97 ng per male by GC. This is the first time that two pheromones (the alarm pheromone neryl formate, and the sex pheromone alpha-acaridial) have been demonstrated to be components of the same opisthonotal gland secretion in astigmatid mites. A mechanism for the appropriate expression of the two pheromones by the mites under different conditions is proposed"
Keywords:		"Aldehydes/isolation & purification/*pharmacology Animals Dose-Response Relationship, Drug Exocrine Glands/chemistry Female Formates/pharmacology Male Mites/*chemistry Sex Attractants/*isolation & purification/*pharmacology *Sexual Behavior, Animal;"
Notes:		"MedlineMizoguchi, Atsuko Mori, Naoki Nishida, Ritsuo Kuwahara, Yasumasa eng 2003/08/19 J Chem Ecol. 2003 Jul; 29(7):1681-90. doi: 10.1023/a:1024235100289"