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题名: Comparison of echolocation behaviour between coastal and riverine porpoises
作者: Akamatsu, Tomonari; Teilmann, Jonas; Miller, Lee A.; Tougaard, Jakob; Dietz, Rune; Wang, Ding; Wang, Kexiong; Siebert, Ursula; Naito, Yasuhiko
关键词: bioacoustics ; echolocation ; marine mammals ; by catch ; finless porpoise ; harbor porpoise
刊名: DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
发表日期: 2007
DOI: 10.1016/j.dsr2.2006.11.006
卷: 54, 期:3-4, 页:290-297
收录类别: SCI ; ISTP
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Oceanography
研究领域[WOS]: Oceanography
英文摘要: Echolocation behaviour of a harbor porpoise and six finless porpoises was recorded in open-water systems using acoustic data loggers (A-tag). In total 1359 click trains were recorded during 4.6 h for the harbor porpoise and 46,240 click trains were recorded during 82.3 h for the finless porpoises. The harbor and finless porpoises produced sonar click trains every 12.3 and 6.4 s on average, respectively. During the inter-click-train interval, the porpoises were silent or produced clicks below 148 dB re. 1 mu Pa, the detection threshold of the tag. Ninety percent of the inter-click-train intervals were 20 s or less in both species. This means that porpoises frequently produce intense click trains. Click-train intervals lasting over 50 s constituted 1% of the total intervals in finless porpoises and 4% in the harbor porpoise. Both species swam without intense clicks for less than 10 in in most cases, but occasionally remained silent or used undetected low-intensity clicks for more than 1 min. During these periods, the porpoises would be susceptible to entanglement in fishing nets. (c) 2007 Elsevier Ltd. All rights reserved.
关键词[WOS]: ACOUSTIC RECORDING TAG ; FINLESS PORPOISES ; HARBOR PORPOISES ; PHOCOENA-PHOCOENA ; DATA LOGGER ; SIGNALS ; PREY
语种: 英语
WOS记录号: WOS:000245820500009
ISSN号: 0967-0645
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27229
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Natl Res Inst Fisheries Engn, Fisheries Res Agcy, Ibaraki 3140408, Japan
2.Natl Environm Res Inst, DK-4000 Roskilde, Denmark
3.Univ So Denmark, Inst Biol, DK-5230 Odense, Denmark
4.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
5.Univ Kiel, Forsch & Technol Zentrum Westkuste, D-25671 Hafentorn, Busum, Germany
6.Natl Inst Polar Res, Tokyo 1738515, Japan
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