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J Chem Ecol

Title:		Identification and synthesis of a male-produced sex pheromone from the stink bug Chlorochroa sayi
Author(s):		Ho HY; Millar JG;
Address:		"Department of Entomology, University of California, Riverside 92521, USA"
Journal Title:		J Chem Ecol
Year:		2001
Volume:		27
Issue:		6
Page Number:		1177 - 1201
DOI:		10.1023/a:1010368013235
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"The reproductive behavior of the stink bug Chlorochroa sayi was studied in the laboratory. There was a sexual maturation period of about 10 days before bugs began mating. Sexually mature adult bugs engaged in courtship consisting of antennation and head-butting of the female by the male, before the female adopted a receptive posture and copulation occurred. Both sexes mated multiple times during their life-spans, with the mean duration of copulations of virgin bugs (42.3 +/- 19.6 min) and experienced bugs (37.3 +/- 28.4 min) being similar. Most matings were initiated in the late afternoon or evening, when pheromone production by males was greatest. Males transferred sperm and nutrients constituting about 17% of their body weight to females during mating. Three male-specific components, methyl geranate, methyl citronellate, and methyl (E)-6-2,3-dihydrofarnesoate in a ratio of 100:0.45:1.6, were first detected in volatiles collected from male bugs on green beans about 9-12 days after the final molt to the adult stage. In vertical Y-tube bioassays, females were attracted to odors from mature male bugs, and to a blend of the three male-produced components. Low numbers of females also were attracted in field trials with the three-component blend. The relatively weak attraction may be a result of other, as yet unknown cues being required in addition to the pheromone, such as visual or substrate-borne vibrational cues"
Keywords:		"Animals *Chemotaxis Circadian Rhythm Copulation Female Heteroptera/*physiology Male Molting Plants Posture Sex Attractants/*chemical synthesis/*isolation & purification/pharmacology *Sexual Behavior, Animal Sexual Maturation;"
Notes:		"MedlineHo, H Y Millar, J G eng Research Support, Non-U.S. Gov't 2001/08/16 J Chem Ecol. 2001 Jun; 27(6):1177-201. doi: 10.1023/a:1010368013235"