title: Investigation into the participation of male pheromones of Rhipicephalus evertsi evertsi during infestation.
abstract: It was shown in this study that Rhipicephalus evertsi evertsi males emit pheromones in the preparasitic as well as in the parasitic phases. Conspecific unengorged male and female images exhibited a high response to water-soluble volatiles collected from unengorged males. A vigorous assembly of unfed female R. evertsi evertsi occurred on filter paper discs which had been in contact with either unfed or 5- and 9-day fed males. Progressively increasing percentages of conspecific unengorged males reacted to organic soluble volatiles obtained from 5- and 9-day fed males as well as to hexane washings of intact males which had fed for 9 days. It is concluded that R. evertsi evertsi males participate not only as pheromone receptive, but also as pheromone emitting, partners in the intraspecific communication of this tick species.
mesh_terms: D000818:Animals; D005260:Female; D006790:Host-Parasite Interactions; D008297:Male; D010675:Pheromones / Q000378:metabolism*; D012724:Sex Attractants / Q000378:metabolism*; D012737:Sex Factors; D013987:Ticks / Q000502:physiology*
chemical_list: D010675:Pheromones; D012724:Sex Attractants