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Apparent source level of free-ranging humpback dolphin, Sousa chinensis, in the South China Sea
Kimura, Satoko1; Akamatsu, Tomonari2,3; Fang, Liang4; Wang, Zhitao4; Wang, Kexiong4; Wang, Ding4; Yoda, Ken1
2016-06-01
Source PublicationJOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM
ISSN0025-3154
Volume96Issue:4Pages:845-851
AbstractThe acoustic performance and behaviour of free-ranging cetaceans requires investigation under natural conditions to understand how wild animals use sound. This is also useful to develop quantitative evaluation techniques for passive acoustic monitoring. There have been limited studies on the acoustics of the Indo-Pacific humpback dolphin; nevertheless, this species is of particular concern because of the anthropogenic activity in the coastal habitats. In the present study, we used a four-hydrophone array to estimate the apparent source levels (ASLs) of biosonar sequences (click trains), of this species in San-Niang Bay, China. As the dolphins approached the array, 173 click trains were found to meet the criteria of on-axis sounds produced within 60 m of the equipment. In total, 121 unclipped click trains were used for the ASL estimation. The qualified click trains contained 36.3 +/- 32.5 clicks, lasting for 1.5 +/- 1.5 s, with average inter-click intervals (ICIs) of 51.2 +/- 38.3 ms. Average ICIs showed a bimodal distribution, with a cut-off at 20 ms. Short-range click trains, with short ICIs of,20 ms on average, were characterized by smaller ASLs, relatively stable ICIs and a shorter click train duration. The mean back-calculated ASL for humpback dolphins with an approximately maximum body size of 2.5 m was 181.7 +/- 7.0 dB re 1 mu Pa at a distance of 1.6-57.2 m. This value was comparable to that recorded for other dolphins of similar body size, although the ASL estimates obtained in this study might be conservative.
SubtypeArticle
KeywordOdontocete Echolocation Signal Click Train Buzz Inter-click Interval Adjustment
DOI10.1017/S0025315414000071
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(31070347 ; National Natural Science Foundation of China(31070347 ; Ministry of Science and Technology of China(2011BAG07B05-3) ; Ministry of Science and Technology of China(2011BAG07B05-3) ; State Oceanic Administration of China(201105011-3) ; State Oceanic Administration of China(201105011-3) ; JSPS(24-3578) ; JSPS(24-3578) ; CREST-Japan Science and Technology Agency ; CREST-Japan Science and Technology Agency ; 31170501) ; 31170501) ; National Natural Science Foundation of China(31070347 ; National Natural Science Foundation of China(31070347 ; Ministry of Science and Technology of China(2011BAG07B05-3) ; Ministry of Science and Technology of China(2011BAG07B05-3) ; State Oceanic Administration of China(201105011-3) ; State Oceanic Administration of China(201105011-3) ; JSPS(24-3578) ; JSPS(24-3578) ; CREST-Japan Science and Technology Agency ; CREST-Japan Science and Technology Agency ; 31170501) ; 31170501)
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS KeywordBOTTLE-NOSED DOLPHINS ; HIGH-FREQUENCY CLICKS ; SPERM-WHALE CLICKS ; ECHOLOCATION CLICKS ; NARROW-BAND ; TURSIOPS-TRUNCATUS ; PHOCOENA-PHOCOENA ; SOURCE PARAMETERS ; HARBOR PORPOISES ; PREY CAPTURE
WOS IDWOS:000375677800007
Funding OrganizationNational Natural Science Foundation of China(31070347 ; National Natural Science Foundation of China(31070347 ; Ministry of Science and Technology of China(2011BAG07B05-3) ; Ministry of Science and Technology of China(2011BAG07B05-3) ; State Oceanic Administration of China(201105011-3) ; State Oceanic Administration of China(201105011-3) ; JSPS(24-3578) ; JSPS(24-3578) ; CREST-Japan Science and Technology Agency ; CREST-Japan Science and Technology Agency ; 31170501) ; 31170501) ; National Natural Science Foundation of China(31070347 ; National Natural Science Foundation of China(31070347 ; Ministry of Science and Technology of China(2011BAG07B05-3) ; Ministry of Science and Technology of China(2011BAG07B05-3) ; State Oceanic Administration of China(201105011-3) ; State Oceanic Administration of China(201105011-3) ; JSPS(24-3578) ; JSPS(24-3578) ; CREST-Japan Science and Technology Agency ; CREST-Japan Science and Technology Agency ; 31170501) ; 31170501)
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27966
Collection水生生物多样性与资源保护研究中心
Affiliation1.Nagoya Univ, Graduate Sch Environm Studies, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan
2.Fisheries Res Agcy, Natl Res Inst Fisheries Engn, Kamisu, Ibaraki 3140408, Japan
3.CREST, Japan Sci & Technol Agcy, Chiyoda Ku, Tokyo 1020075, Japan
4.Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Inst Hydrobiol, Wuhan 430072, Peoples R China
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GB/T 7714
Kimura, Satoko,Akamatsu, Tomonari,Fang, Liang,et al. Apparent source level of free-ranging humpback dolphin, Sousa chinensis, in the South China Sea[J]. JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM,2016,96(4):845-851.
APA Kimura, Satoko.,Akamatsu, Tomonari.,Fang, Liang.,Wang, Zhitao.,Wang, Kexiong.,...&Yoda, Ken.(2016).Apparent source level of free-ranging humpback dolphin, Sousa chinensis, in the South China Sea.JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM,96(4),845-851.
MLA Kimura, Satoko,et al."Apparent source level of free-ranging humpback dolphin, Sousa chinensis, in the South China Sea".JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM 96.4(2016):845-851.
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