Mechanisms underlying the production of carapace vibrations and associated waterborne sounds in the American lobster, Homarus americanus
Mechanisms underlying the production of carapace vibrations and associated waterborne sounds in the American lobster, Homarus americanus
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DOI：
10.1242/jeb.01771
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发表时间：
2005-09-01
影响因子：
2.8
通讯作者：
Watson, WH
中科院分区：
文献类型：
--
作者：
Henninger, HP;Watson, WH
美洲龙虾通过同时收缩位于第二根天线底部的对抗性遥控器和促进器肌肉，产生甲壳振动，这也导致了水中的声音信号。这些振动的平均频率为183.1赫兹(范围87-261赫兹)，持续时间从68毫秒到1720ms(平均277.1毫秒)，并导致类似频率的水声。龙虾通常一次只用一对肌肉产生这些信号，当产生一系列振动时，它们会交替使用左右触角的肌肉。偶尔，它们会通过同时收缩两组肌肉来震动甲壳。虽然去除肌肉是产生甲壳振动所必需的，但促进器似乎扮演着次要的角色。电刺激去除器而不是启动子会产生振动，而破坏去除器而不是启动子会消除龙虾振动甲壳的能力。无论大小还是性别的龙虾，在受到惊吓、抓住或威胁时都会发出这些信号。然而，目前尚不清楚美洲龙虾振动和/或发声的行为意义。
American lobsters produce carapace vibrations, which also lead to waterborne acoustic signals, by simultaneously contracting the antagonistic remotor and promotor muscles located at the base of the second antenna. These vibrations have a mean frequency of 183.1 Hz (range 87-261 Hz), range in duration from 68 to 1720 ms (mean 277.1 ms) and lead to waterborne sounds of similar frequencies. Lobsters most often produce these signals using only one pair of muscles at a time and alternate between the muscles of the left and right antennae when making a series of vibrations. Occasionally, they vibrate their carapace by simultaneously contracting both sets of muscles. While the remotor muscle is required for producing carapace vibrations, the promotor appears to play a secondary role. Electrical stimulation of the remotor, but not the promotor, results in the production of vibrations, while lesions of the remotor, but not promotor, eliminate the ability of lobsters to vibrate their carapace. Lobsters of all sizes and both sexes produce these signals when startled, grasped or threatened. However, at this time, the behavioral significance of vibration and/or sound production by American lobsters is not known.