Discrimination of Conspecific Individuals via Cuticular Pheromones by Males of the Cricket Gryllus bimaculatus(Behavior Biology)
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概要
- 論文の詳細を見る
Cuticular substances on the nody surface of crickets serve as pheromones that elicit a variety of different behaviors in male crickets. Antennal contact between males and females resulted in courtship behavior, and that between two males realted in aggressive displays. As a first step in elucidating how crickets recognize and discriminate individuals, behavioral responses of male individuals to cuticular substances of conspecific male or females were investigated. The behavioral responses of males to antennal or palpal stimulation with female antennae, the majority of males responded with courtship behavior; to stimulation with male antennae, males responded with aggressive displays. To gain insight into the chemical nature of the behaviorally relevant components, isolated antennae were washed in either nhexane, acetone or ethanol before behavior assays. Washed antennae no longer elicited courship or aggressive responses in males. Next, polypropylene fibers were smeared with substances from the body surface of females and used for antennal stimulation. This experiment showed that the quality and quantity of cuticular substances appear to be highly age-dependent. Significantly more males responded with courtship behavior to cuticular substances from younger females. Isolated males generally showed higher levels of aggression than males reared in froups. Grouped males also were more likely to display courtship behavior towards antennae from younger females, and aggressive behavior towards antennae from older females. These results suggest that male discrimination of mating partners depends on the nature of female culticular substances.
- 社団法人日本動物学会の論文
- 2005-10-25
著者
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Aonuma Hitoshi
Laboratory Of Neuro-cybernatics Research Institute For Electronic Science Hokkaido University
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Hisada Mituhiko
Hokkaido Institute Of Rehabilitation Techonology
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Nagamoto Jun
Department of Zoology, Faculty of Science, Hokkaido University
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Nagamoto Jun
Department Of Zoology Faculty Of Science Hokkaido University
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