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Male cockroaches of the species Periplaneta americana rely on a female-produced airborne pheromone to initiate courting behavior, The male responds to the presence of the pheromone with rapid, oriented locomotion. Contact with the female (or other males or larvae) elicits wing-raising and other responses characteristic of male courtship behavior. Males of(More)
  • R Schafer
  • The Journal of experimental zoology
  • 1977
The antennae of male Periplaneta americana acquire a large number of olfactory receptors at the adult stage. Electrophysiological methods (single unit and electroantennogram recording) show that a portion of the receptors added at the adult ecdysis are sex attractant receptors. Sex attractant receptors are not present in large numbers on larval and adult(More)
Although the exact mechanisms by which superantigens may contribute to the pathogenesis of diseases are unknown, it seems increasingly likely that they have a role in the induction and pathogenesis of disease. The studies described here demonstrate that in several different diseases either bacterial or viral superantigens can be isolated from patients.(More)
Sexual dimorphism of antennal sense organs appears only at the adult stage during normal development of the cockroach, Periplaneta arnericana. Adult males acquire approximately twice as many olfactory sensilla as females at the terminal ecdysis. When terminal instar larvae are subjected to unilateral antennectomy, most ecdyse to supernumerary larvae rather(More)
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