Olfactory receptor responses of the nymphal American cockroach to sex pheromones and their mimics.
1. EAG responses to highly purified sex pheromones (periplanone-A and -B), sex pheromone mimics [germacrene-D, (+)-verbanyl acetate and (+)-trans-verbenyl acetate] and general odor (camphor) were recorded from both sexes of adult and three nymphal stages (7, 10 and 11th instars) of the American cockroach. 2. The M/F ratios were evaluated for each stage by stimulation with the above chemicals. 3. The ratio values indicated undeveloped sex pheromone receptor on the antennae of 7th male instar and females of all the stages. On the other hand, precursory development of the receptor was expected on the antennae of males of the old-aged nymphal instars and full development on the adult male antennae.
D000818:Animals; D002628:Chemoreceptor Cells; D003058:Cockroaches; D005260:Female; D008297:Male; D009758:Nymph; D010675:Pheromones / Q000494:pharmacology*; D012724:Sex Attractants / Q000494:pharmacology*; D012737:Sex Factors
D010675:Pheromones; D012724:Sex Attractants