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dc.contributor.authorNiu, Fu-Qiangzh_CN
dc.contributor.authorLiu, Zhen-Wenzh_CN
dc.contributor.authorWen, Hong-Taozh_CN
dc.contributor.authorXu, De-Weizh_CN
dc.contributor.authorYang, Yan-Mingzh_CN
dc.contributor.author牛富强zh_CN
dc.date.accessioned2015-07-22T03:12:42Z
dc.date.available2015-07-22T03:12:42Z
dc.date.issued2012 Februaryzh_CN
dc.identifier.citationJournal of the Acoustical Society of America, 2012,131(2):1643-1649zh_CN
dc.identifier.other20120914815157zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/88212
dc.description.abstractAt present, the fundamental frequencies of signals of most commercially available acoustic alarms to deter small cetaceans are below 20 kHz, but it is not well ascertained whether higher frequencies have a deterrent effect on bottlenose dolphins (Tursiops truncatus). Two captive bottlenose dolphins housed in a floating pen were subjected to a continuous pure tone at 50 kHz with a source level of 160 2 dB (re 1 Pa, rms). The behavioral responses of dolphins were judged by comparing surfacing distance relative to the sound source, number of surfacings, and number of echolocation clicks produced, during forty 15 min baseline periods with forty 15 min test periods (four sessions per day, 40 sessions in total). On all 10 study days, surfacing distance and the number of surfacings increased while click production decreased during broadcasts of test sound. The avoidance threshold sound pressure level for a continuous 50 kHz tone for the bottlenose dolphins, in the context of this study, was estimated to be 144 2 dB (re 1 Pa, rms). The results indicated that a continuous 50 kHz tonal signal can deter bottlenose dolphins from an area. 漏 2012 Acoustical Society of America.zh_CN
dc.language.isoen_USzh_CN
dc.publisherAcoustical Society of Americazh_CN
dc.source.urihttp://dx.doi.org/10.1121/1.3675945zh_CN
dc.subjectHard facingzh_CN
dc.titleBehavioral responses of two captive bottlenose dolphins (Tursiops truncatus) to a continuous 50 kHz tonezh_CN
dc.typeArticlezh_CN


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