期刊
JOURNAL OF EXPERIMENTAL BIOLOGY
卷 216, 期 12, 页码 2221-2228出版社
COMPANY OF BIOLOGISTS LTD
DOI: 10.1242/jeb.079400
关键词
insect; fighting; sensory information; antennectomy; cuticular substances
类别
资金
- Ministry of Education, Culture, Sports, Science and Technology in Japan (MEXT), Scientific Research on Priority Areas [454, 17075001]
- Japan Society for the Promotion of Science (JSPS) [20770052, 23300113]
- Akiyama Life Science Foundation
- Grants-in-Aid for Scientific Research [20770052, 17075001, 25440168, 23650102] Funding Source: KAKEN
Male crickets (Gryllus bimaculatus) exhibit intensively defensive aggressive behavior towards attacking males most often culminating in fighting. After the fight, the loser no longer exhibits aggressiveness in a second, separate encounter with another male; rather, the defeated male exhibits avoidance behavior. Here, we investigated the role of sensory input from the antennae in male defensive aggressive behavior. When we removed antennae from males (antennectomized males), we found that they showed little aggressiveness towards each other whereas they continued to exhibit typical fighting behavior towards an intact male. In addition, in a second encounter, antennectomized losers showed significantly higher aggressiveness towards another male than did intact losers. We further found that antennectomized crickets do not utilize visual or palpal sensory input to elicit aggressive behavior. In contrast, intact males showed aspects of aggressive behavior to male cuticular substances before and after winning a fight, and if they lost a fight they showed avoidance behavior. It thus appears that antennal sensory information is crucial in the mediation of aggressive and avoidance behaviors. However, sensory inputs from the antennae are not necessary to elicit defensive aggressive behavior but are necessary to discriminate conspecific males and initiate attacks against them.
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