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学科主题: Biology; Ecology; Evolutionary Biology
题名: Biosonar behaviour of free-ranging porpoises
作者: Akamatsu, T; Wang, D; Wang, KX; Naito, Y
通讯作者: Akamatsu, T, Natl Res Inst Fisheries Engn, Ibaraki 3140421, Japan
关键词: echolocation ; cetacean ; finless porpoise ; sonar ; dolphin
刊名: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
发表日期: 2005-04-22
DOI: 10.1098/rspb.2004.3024
卷: 272, 期:1565, 页:797-801
收录类别: SCI
文章类型: Article
部门归属: Natl Res Inst Fisheries Engn, Ibaraki 3140421, Japan; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Natl Inst Polar Res, Tokyo 1738515, Japan
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Biology ; Ecology ; Evolutionary Biology
研究领域[WOS]: Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
摘要: Detecting objects in their paths is a fundamental perceptional function of moving organisms. Potential risks and rewards, such as prey, predators, conspecifics or non-biological obstacles, must be detected so that an animal can modify its behaviour accordingly. However, to date few studies have considered how animals in the wild focus their attention. Dolphins and porpoises are known to actively use sonar or echolocation. A newly developed miniature data logger attached to a porpoise allows for individual recording of acoustical search efforts and inspection distance based on echolocation. In this study, we analysed the biosonar behaviour of eight free-ranging finless porpoises (Neophocaena phocaenoides) and demonstrated that these animals inspect the area ahead of them before swimming silently into it. The porpoises inspected distances up to 77 in, whereas their swimming distance without using sonar was less than 20 in. The inspection distance was long enough to ensure a wide safety margin before facing real risks or rewards. Once a potential prey item was detected, porpoises adjusted their inspection distance from the remote target throughout their approach.
英文摘要: Detecting objects in their paths is a fundamental perceptional function of moving organisms. Potential risks and rewards, such as prey, predators, conspecifics or non-biological obstacles, must be detected so that an animal can modify its behaviour accordingly. However, to date few studies have considered how animals in the wild focus their attention. Dolphins and porpoises are known to actively use sonar or echolocation. A newly developed miniature data logger attached to a porpoise allows for individual recording of acoustical search efforts and inspection distance based on echolocation. In this study, we analysed the biosonar behaviour of eight free-ranging finless porpoises (Neophocaena phocaenoides) and demonstrated that these animals inspect the area ahead of them before swimming silently into it. The porpoises inspected distances up to 77 in, whereas their swimming distance without using sonar was less than 20 in. The inspection distance was long enough to ensure a wide safety margin before facing real risks or rewards. Once a potential prey item was detected, porpoises adjusted their inspection distance from the remote target throughout their approach.
关键词[WOS]: NORTHERN ELEPHANT SEALS ; NEOPHOCAENA-PHOCAENOIDES ; ECHOLOCATION SIGNALS ; DOLPHINS ; SYSTEM
语种: 英语
WOS记录号: WOS:000229783700004
ISSN号: 0962-8452
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9234
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, Ibaraki 3140421, Japan
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Natl Inst Polar Res, Tokyo 1738515, Japan

Recommended Citation:
Akamatsu, T; Wang, D; Wang, KX; Naito, Y.Biosonar behaviour of free-ranging porpoises,PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2005,272(1565):797-801
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