Response of German Cockroaches to a Dispersant and Other Substances Secreted by Crowded Adults and Nymphs (Blattodea: Blattellidae)

摘要

The responses of adult male German cockroaches to filter papers conditioned by crowded adult males and by large nymphs is compared to their response to female-conditioned papers. Males were repelled only from the latter papers. The lack of repellency to papers conditioned by males and large nymphs may be attributed to insufficient amounts of a dispersant pheromone to counteract the response to aggregation pheromone.