The Graduate Center, City University of New York, 365 Fifth Ave., New York, New York 10016, USA.
Department of Psychology, Manhattan College, 4513 Manhattan College Parkway, Riverdale, New York 10471, USA.
J Acoust Soc Am. 2020 Feb;147(2):EL80. doi: 10.1121/10.0000602.
Antillean manatees produce vocalizations reported to be important for communication, but their vocal behavior throughout their geographic range is poorly understood. A SoundTrap recorder (sample rates: 288/576 kHz) was deployed in Belize to record vocalizations of wild manatees in a seagrass channel and of a young rehabilitated and released manatee in a shallow lagoon. Spectral analysis revealed broadband vocalizations with frequencies up to 150 kHz and a high proportion of calls with ultrasonic components. Ultrasonic frequency components appear prevalent in their vocal repertoire and may be important to manatee communication.
安地列斯海牛会发出被认为对交流很重要的叫声，但它们在整个地理分布范围内的发声行为还不太为人所知。一个 SoundTrap 记录器（采样率：288/576 kHz）被部署在伯利兹，用于记录在海草通道中的野生海牛和一只在浅泻湖中的年轻康复并被放生的海牛的叫声。频谱分析显示，它们的叫声具有高达 150 kHz 的宽带频率和很大比例的超声成分。超声频率成分似乎在它们的叫声中很常见，可能对海牛的交流很重要。
