期刊
BEHAVIOUR
卷 141, 期 -, 页码 297-311出版社
BRILL ACADEMIC PUBLISHERS
DOI: 10.1163/156853904322981860
关键词
-
Pursuit-deterrent signalling may account for several behaviors, often Subtle, that have no current satisfactory explanation. We conducted field observations and experiments to determine whether arm-waving by Bonaire whiptail lizards, Cnemidophorus murinus, is consistent with pursuit deterrent signalling. The hypotheses that lizards wave their arms to remove feet from hot Substrates and that arm-waving is solely a social signal were falsified. Lizards preferentially waved the arm closer to an investigator Simulating a predator, typically while looking directly at the predator. This strongly Suggests signalling and contradicts the hypothesis that arm-waving is merely a flight intention movement. Most individuals retreat, providing a margin of safety, and then wave. As expected for a pursuit-deterrent signal, arm-waving is related to risk. During direct approaches lizards waved when the predator drew within 3-6 m if approached slowly, but fled without signalling if approached rapidly. Lizards approached tangentially signalled frequently when the minimum bypass distance was 2-4 m, but rarely when it was 10 m. They arm-waved when predators approached, but rarely while they retreated. Arm-waving was rare where lizards were habituated to human presence, but frequent elsewhere. Collectively, the data strongly Suggest that arm-waving has a pursuit-deterrent function.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据