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题名: The Diel Rhythms of Biosonar Behavior in the Yangtze Finless Porpoise (Neophocaena asiaeorientalis asiaeorientalis) in the Port of the Yangtze River: The Correlation between Prey Availability and Boat Traffic
作者: Wang, Zhitao1, 2; Akamatsu, Tomonari3; Wang, Kexiong1; Wang, Ding1
通讯作者: Wang, KX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Peoples R China.
关键词: PANTROPICAL SPOTTED DOLPHINS ; PHOCAENOIDES-ASIAEORIENTALIS ; ECHOLOCATION BEHAVIOR ; TEMPORAL PATTERNS ; HARBOR PORPOISES ; BEAKED-WHALES ; DATA-LOGGERS ; CONSERVATION ; SIGNALS ; SONAR
刊名: PLOS ONE
发表日期: 2014-05-13
DOI: 10.1371/journal.pone.0097907
卷: 9, 期:5, 页:e97907
收录类别: SCI
文章类型: Article
部门归属: [Wang, Zhitao; Wang, Kexiong; Wang, Ding] Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Peoples R China; [Wang, Zhitao] Univ Chinese Acad Sci, Beijing, Peoples R China; [Akamatsu, Tomonari] Natl Res Inst Fisheries Engn, Fisheries Res Agcy, Ibaraki, Japan
WOS标题词: Science & Technology
资助者: Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-EW-Z-4]; National Natural Science Foundation of China [31170501, 31070347]; Special Fund for Agro-scientific Research in the Public Interest of the Ministry of Agriculture of China [201203086]; Ministry of Science and Technology of China [2011BAG07B05-3]; State Oceanic Administration of China [201105011-3]; CREST, Japan Science and Technology Agency; Ocean Park Conservation Foundation, Hong Kong
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: Information on the habitat use of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is critical for its conservation. The diel biosonar behavior of the porpoise in the port areas of the Yangtze River was examined along with simultaneous observations of fish density and boat traffic. Biosonar pulses from the porpoises were detected for 1233 min (5.77%) over a 21,380 min duration of effective observations. In total, 190 (5.63%) buzzes (an indication of prey capture attempts) were recorded among the 3372 identified click trains. Of the 168 echolocation encounters (bouts of click trains less than eight min apart), 150 (89.3%) involved single animals, indicating that solitary porpoises were frequently present and feeding in the port areas. Significant diel patterns were evident involving the biosonar behavior of the porpoises (including click trains and buzzes), fish density and boat traffic. The frequencies of the click trains and buzzes were significantly lower during the day than in the evening and at night, which suggests that porpoises in this region are primarily engaged in crepuscular and nocturnal foraging. The lack of a significant diel pattern in the echolocation encounters indicates the importance of the port in porpoise conservation. A forced feeding schedule may be associated with the lack of a significant correlation between porpoise acoustics and boat traffic. Overall, prey availability appears to be the primary factor that attracts porpoises. Additionally, porpoises tend to migrate or remain downstream in the morning and migrate or remain upstream in the evening, most likely to follow their prey. The findings of this study can be used to improve the conservation of the Yangtze finless porpoise.
英文摘要: Information on the habitat use of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is critical for its conservation. The diel biosonar behavior of the porpoise in the port areas of the Yangtze River was examined along with simultaneous observations of fish density and boat traffic. Biosonar pulses from the porpoises were detected for 1233 min (5.77%) over a 21,380 min duration of effective observations. In total, 190 (5.63%) buzzes (an indication of prey capture attempts) were recorded among the 3372 identified click trains. Of the 168 echolocation encounters (bouts of click trains less than eight min apart), 150 (89.3%) involved single animals, indicating that solitary porpoises were frequently present and feeding in the port areas. Significant diel patterns were evident involving the biosonar behavior of the porpoises (including click trains and buzzes), fish density and boat traffic. The frequencies of the click trains and buzzes were significantly lower during the day than in the evening and at night, which suggests that porpoises in this region are primarily engaged in crepuscular and nocturnal foraging. The lack of a significant diel pattern in the echolocation encounters indicates the importance of the port in porpoise conservation. A forced feeding schedule may be associated with the lack of a significant correlation between porpoise acoustics and boat traffic. Overall, prey availability appears to be the primary factor that attracts porpoises. Additionally, porpoises tend to migrate or remain downstream in the morning and migrate or remain upstream in the evening, most likely to follow their prey. The findings of this study can be used to improve the conservation of the Yangtze finless porpoise.
关键词[WOS]: PANTROPICAL SPOTTED DOLPHINS ; PHOCAENOIDES-ASIAEORIENTALIS ; ECHOLOCATION BEHAVIOR ; TEMPORAL PATTERNS ; HARBOR PORPOISES ; BEAKED-WHALES ; DATA-LOGGERS ; CONSERVATION ; SIGNALS ; SONAR
语种: 英语
WOS记录号: WOS:000336369200137
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19991
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Natl Res Inst Fisheries Engn, Fisheries Res Agcy, Ibaraki, Japan
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