Whistles emitted by Indo-Pacific humpback dolphins (Sousa chinensis) in Zhanjiang waters, China
Dong, Lijun1; Caruso, Francesco1; Lin, Mingli1; Liu, Mingming1,2; Gong, Zining1,2; Dong, Jianchen1; Cang, Siyuan1,3; Li, Songhai1,4
2019-06-01
Source PublicationJOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
ISSN0001-4966
Volume145Issue:6Pages:3289-3298
Abstract

Whistles emitted by Indo-Pacific humpback dolphins in Zhanjiang waters, China, were collected by using autonomous acoustic recorders. A total of 529 whistles with clear contours and signal-to-noise ratio higher than 10dB were extracted for analysis. The fundamental frequencies and durations of analyzed whistles were in ranges of 1785-21675Hz and 30-1973ms, respectively. Six tonal types were identified: constant, downsweep, upsweep, concave, convex, and sine whistles. Constant type was the most dominant tonal type, accounting for 32.51% of all whistles, followed by sine type, accounting for 19.66% of all whistles. This paper examined 17 whistle parameters, which showed significant differences among the six tonal types. Whistles without inflections, gaps, and stairs accounted for 62.6%, 80.6%, and 68.6% of all whistles, respectively. Significant intraspecific differences in all duration and frequency parameters of dolphin whistles were found between this study and the study in Malaysia. Except for start frequency, maximum frequency and the number of harmonics, all whistle parameters showed significant differences between this study and the study conducted in Sanniang Bay, China. The intraspecific differences in vocalizations for this species may be related to macro-geographic and/or environmental variations among waters, suggesting a potential geographic isolation among populations of Indo-Pacific humpback dolphins.

DOI10.1121/1.5110304
Indexed BySCI
Funding Organizationmajor science and technology project in Hainan province ; National Natural Science Foundation of China ; Ocean Park Conservation Foundation of HongKong
Language英语
Funding Projectmajor science and technology project in Hainan province[ZDKJ2016009-1-1] ; National Natural Science Foundation of China[41422604] ; National Natural Science Foundation of China[41306169] ; Ocean Park Conservation Foundation of HongKong[MM02-1516]
WOS KeywordBottle-nosed Dolphins ; Tursiops-aduncus ; Geographic Variations ; Habitat Characteristics ; Conservation Status ; Coastal Waters ; Killer Whales ; Orcinus-orca ; Noise ; Abundance
WOS Research AreaAcoustics ; Audiology & Speech-language Pathology
WOS SubjectAcoustics ; Audiology & Speech-language Pathology
WOS IDWOS:000474603700027
PublisherACOUSTICAL SOC AMER AMER INST PHYSICS
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/6898
Collection深海科学研究部_深海生物学研究室_海洋哺乳动物与海洋生物声学研究组
Corresponding AuthorDong, Lijun; Li, Songhai
Affiliation1.Chinese Acad Sci, Marine Mammal & Marine Bioacoust Lab, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Coll Underwater Acoust Engn, Harbin 150001, Heilongjiang, Peoples R China
4.Natl Univ Singapore, Trop Marine Sci Inst, Singapore 119227, Singapore
Recommended Citation
GB/T 7714
Dong, Lijun,Caruso, Francesco,Lin, Mingli,et al. Whistles emitted by Indo-Pacific humpback dolphins (Sousa chinensis) in Zhanjiang waters, China[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2019,145(6):3289-3298.
APA Dong, Lijun.,Caruso, Francesco.,Lin, Mingli.,Liu, Mingming.,Gong, Zining.,...&Li, Songhai.(2019).Whistles emitted by Indo-Pacific humpback dolphins (Sousa chinensis) in Zhanjiang waters, China.JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,145(6),3289-3298.
MLA Dong, Lijun,et al."Whistles emitted by Indo-Pacific humpback dolphins (Sousa chinensis) in Zhanjiang waters, China".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 145.6(2019):3289-3298.
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