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2010 Fiscal Year Final Research Report

Acoustic survey of baiji in their historic habitat of the Yangtze River

Research Project

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Project/Area Number 19405005
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Resource conservation science
Research InstitutionFisheries Research Agency

Principal Investigator

AKAMATSU Tomonari  Fisheries Research Agency, 漁業生産・情報工学部, 生物音響技術研究チーム長 (00344333)

Project Period (FY) 2007 – 2010
Keywords稀少動物の保全 / 絶滅危惧種 / イルカ / スナメリ
Research Abstract

Distribution of endangered freshwater cetaceans was revealed by cutting-edge underwater acoustic technology. Macro scale distribution of cetaceans in the entire Yangtze River and micro scale distribution in a high density area were provided. Historic habitat of baiji and Yangtze finless porpoises were surveyed from Yichang, nearby three gorges dam, to Shanghai, using towing type underwater microphone. Results suggested extinction of baiji and quick reduction of finless porpoises. Log-term stationary acoustic observation had been conducted at the hot spot, high density waters, in the middle of the Yangtze River. Using the outcomes, a model to convert acoustic detection rate to real density of existing number of animals was proposed. Extensive towing acoustic survey was conducted in the same section and provided detail map of distribution of porpoises. In the last year, periodical automatic surveys using a cargo ship as a platform of the acoustic device were conducted from Wuhan to Shanghai, 1100km stretch of the middle and lower reached of the Yanzgter River. This method is cost effective and useful for range-wide monitoring of small odontocetes, which has been applied worldwide in these days.

  • Research Products

    (31 results)

All 2011 2010 2009 2008 2007 Other

All Journal Article (15 results) (of which Peer Reviewed: 14 results) Presentation (13 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Widespread passive acoustic detection of Yangtze finless porpoise using miniature stereo acoustic data-loggers : A review.2010

    • Author(s)
      Li S., Akamatsu T., Dong L., Wang K., Wang D., Kimura S.
    • Journal Title

      J.Acoust.Soc.Am. Vol.128

      Pages: 1476-1482

    • Peer Reviewed
  • [Journal Article] Density estimation of Yangtze finless porpoises using passive acoustic sensors and automated click train detection.2010

    • Author(s)
      Kimura S., Akamatsu T., Li S. Dong S., Dong L., Wang K., Wang D., Arai N.
    • Journal Title

      j.Acoust.Soc.Am. Vol.128

      Pages: 1435-1445

    • Peer Reviewed
  • [Journal Article] Seasonal and diurnal presence of finless porpoises at a corridor to the ocean from their habitat.2010

    • Author(s)
      Akamatsu T., Nakamura, K., Kawabe, R., Furukawa, S., Murata,H., Kawakubo, A., Komaba, M.
    • Journal Title

      Marine Biology VOl.157

      Pages: 1879-1887

    • Peer Reviewed
  • [Journal Article] Scanning sonar of rolling porpoises during prey capture dives.2010

    • Author(s)
      Akamatsu T., Wang D., Wang K, Li S., Dong S.
    • Journal Title

      j.Exp.Biol Vol.213

      Pages: 146-152

    • Peer Reviewed
  • [Journal Article] Detection probability of vocalizing dugongs during playback of conspecific call.2009

    • Author(s)
      Ichikawa, K., Akamatsu T., Shinke, T., Sasamori, K., Miyauchi, Y., Abe, Y., Adulyanukosol, K., Arai, N.
    • Journal Title

      j.Acoust.Soc.Am Vol.126

      Pages: 1954-1959

    • Peer Reviewed
  • [Journal Article] Localization and tracking of phonating finless porpoises using towed stereo acoustic data-loggers.2009

    • Author(s)
      李松海, 赤松友成, 王丁, 王克雄
    • Journal Title

      j.Acoust. Soc. Am Vol.126

      Pages: 468-475

    • Peer Reviewed
  • [Journal Article] Comparison of stationary acoustic monitoring and visual observation of finless porpoises (Neophocaena phocaenoides).2009

    • Author(s)
      Kimura S., Akamatsu T., Wang K., Wang D., Li S., Dong, S., Arai, N.
    • Journal Title

      j.Acoust.Soc.Am Vol.125

      Pages: 547-553

    • Peer Reviewed
  • [Journal Article] Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River China2008

    • Author(s)
      Zhao, X., Barlow, J., Taylor, B., Pitman, R., Wang K., Wei, Z., Stewart, B., Turvey, S., Akamatsu T., Reeves, R., Wang D.
    • Journal Title

      Biological Conservation Vol.141

      Pages: 3006-3018

    • Peer Reviewed
  • [Journal Article] Simultaneous production of low-and high-frequency sounds in neonatal finless porpoises.2008

    • Author(s)
      Li S., Wang K., Dong S., Wang D., Akamatsu T.
    • Journal Title

      j.Acoust.Soc.Am Vol.124、No2

      Pages: 716-718

    • Peer Reviewed
  • [Journal Article] Evidence of nighttime movement of finless porpoises through Kanmon Strait monitored using a stationary acoustic recording device2008

    • Author(s)
      Akamatsu,T., Nakazawa, I., Tsuchiyama, T., Kimura, N
    • Journal Title

      Fisheries Science Vol.74

      Pages: 970-976

    • Peer Reviewed
  • [Journal Article] Estimation of the detection probability for Yangtze finless porpoises(Neophocaena phocaenoides asiaeorientalis) with a passive acoustic method2008

    • Author(s)
      Akamatsu T., Wang D., Wang K., Li S., Dong, S.,Zhao, X.,Barlow, J., Stewart, B.S.,Richlen, M
    • Journal Title

      j.Acoust. Soc. Am Vol.123、No.6

      Pages: 4403-4411

    • Peer Reviewed
  • [Journal Article] INDIRECT EVIDENCE OF BOAT AVOIDANCEBEHAVIOR OF YANGTZE FINLESS PORPOISE2008

    • Author(s)
      Li S., Akamatsu T., Wang D., Wang K., Dong, S., Zhao, X., Wei, Z., Zhang, Z., Taylor, B., Barrett, L.A., Turvey, S.T., Reeves, R.R., Stewart, B.S., Richlen, M., Brandon, J.R.
    • Journal Title

      Bioacoustics The International Journal of Animal Sound and its Recording Vol.17

      Pages: 174-176

    • Peer Reviewed
  • [Journal Article] Echolocation click sounds from wild inshore finless porpoise (Neophocaena phocaenoides sunameri)with comparisons to the sonar of riverine N. p. asiaeorientalis2007

    • Author(s)
      Li,S., 王丁, Wang,K., Akamatsu T., Ma., Z., Han, J.
    • Journal Title

      j.Acoust. Soc. Am Vol.121、No.6

      Pages: 3938-3946

    • Peer Reviewed
  • [Journal Article] First human-caused extinction of a cetacean species?2007

    • Author(s)
      Turvey, S.T., Pitman, R.L. Taylor, B.L., Barlow,J., Akamatsu,T., Barret t,L.A., Zhao,X., Reeves,R.R., Stewar t, B.S., Wang K., Wei,Z., Zhang, X., Pusser,L.T., Richlen,M., Brandon, J.R., Wang,D.
    • Journal Title

      Biology Letters Vol.3、No.5

      Pages: 537-540

    • Peer Reviewed
  • [Journal Article] 音響観測門によるスナメリの地域的行動観測2007

    • Author(s)
      木村里子、赤松友成、王丁、王克雄、李松海
    • Journal Title

      海洋音響学会誌 Vol.34、No.4

      Pages: 260-265

  • [Presentation] 揚子江におけるスナメリの分布変化2011

    • Author(s)
      木村里子
    • Organizer
      平成23年度日本水産学会春季大会
    • Place of Presentation
      東京海洋大学品川キャンパス
    • Year and Date
      20110327-20110331
  • [Presentation] スナメリの音響・目視発見確率の予備的推定2011

    • Author(s)
      白木原国雄
    • Organizer
      平成23年度日本水産学会春季大会
    • Place of Presentation
      東京海洋大学品川キャンバス
    • Year and Date
      20110327-20110331
  • [Presentation] Long-term passive acoustic monitoring of the moving patterns of cetaceans in the istanbul strait.2011

    • Author(s)
      Dede, A.
    • Organizer
      The 25th Annual Conference of the European Cetacean Society.
    • Place of Presentation
      Cadiz Spain
    • Year and Date
      20110321-20110323
  • [Presentation] Scanning sonar of rolling porpoises during prey capture dives.2011

    • Author(s)
      Akamatsu, T.
    • Organizer
      Fourth Internationl Science Symposium on Bio-logging 2011.
    • Place of Presentation
      Hobart, Australia.
    • Year and Date
      20110314-20110318
  • [Presentation] Seasonal behavior, and their influence on tidal behavior of Chinese white dolphins (Sousa chinensis) at Xinhuway River Estuary2011

    • Author(s)
      Lin, T. H.
    • Organizer
      Symposium on Animal Behavior,Ecology and Environmental Education. Taiwan
    • Place of Presentation
      Tainan, Taiwan
    • Year and Date
      20110100
  • [Presentation] A review of passive acoustic monitoring methods for the detection of cetaceans in southeastern Asia region.2010

    • Author(s)
      Akamatsu, T.
    • Organizer
      The Fourth Annual Meeting of Asian Fisheries Acoustics Society, AFAS 2010.
    • Place of Presentation
      Eastin Hotel, Penang, Malaysia.
    • Year and Date
      20101214-20101216
  • [Presentation] Seasonal and diurnal presence of finless porpoises at the corridor to the ocean from a semi-closed bay habitat.2010

    • Author(s)
      Akamatsu,T.
    • Organizer
      159th Meeting of the Acoustical Society of America.
    • Place of Presentation
      Baltimore, Maryland.
    • Year and Date
      20100419-20100423
  • [Presentation] Diurnal behavior pattern of Ganges river dolphins (Platanista gangetica gangetica) observed by stationed stereo acoustic data loggers.2009

    • Author(s)
      Yamamoto Y.
    • Organizer
      The Society for Marine Mammalogy 18th Biennial Conference .Quebec
    • Place of Presentation
      Quebec City.QC.Canada.
    • Year and Date
      20091012-20091016
  • [Presentation] Vaquita Expedition 2008 : science for immediate management needs.2009

    • Author(s)
      Taylor B.L.
    • Organizer
      The Society for Marine Mammalogy 18th Biennial Conference-Quebec
    • Place of Presentation
      Quebec City.QC.Canada.
    • Year and Date
      20091012-20091016
  • [Presentation] Presence pattern of Yangtze finless porpoises at a geographical bottleneck area of the Yangtze River system.2009

    • Author(s)
      木村里子
    • Organizer
      The Society for Marine Mammalogy 18th Biennial Conference-Quebec
    • Place of Presentation
      Quebec City.C.Canada.
    • Year and Date
      20091012-20091016
  • [Presentation] Scanning sonar of rolling porpoises during prey capture. Invited2009

    • Author(s)
      Akamatsu, T.
    • Organizer
      The 5th Animal Sonar Symposium
    • Place of Presentation
      Doshisha Univ.Kyoto. Japan.
    • Year and Date
      20090914-20090918
  • [Presentation] Vocal hot spots of dugongs (Dugong dugon)monitored using simultaneous passive acoustic methods and visual observations in Thai waters.

    • Author(s)
      Ichikawa K.
    • Organizer
      The Society for Marine Mammalogy 18th Biennial Conference-Quebec、Quebec City. QC. Canada.
    • Place of Presentation
      Quebec City.QC.Canada.
  • [Presentation] Development of high frequency signals in neonatal finless porpoises

    • Author(s)
      Li, S.
    • Organizer
      The 5th Animal Sonar Symposium
    • Place of Presentation
      Doshisha Univ.Kyoto. Japan.
  • [Book] Biosonar and auditory system of the yangtze finless porpoise, In : Endangered Species: New Research2009

    • Author(s)
      Li, S., Wang,D., Wang,K., Akamatsu,T., Supin, A.Y., Popov, V.V.、Eds : A.Columbus L. Kuznetsov.
    • Total Pages
      1-13
    • Publisher
      Nova Science Publishers, Inc
  • [Book] In Biology, Evolution and Conservation of River Dolphins Within South America and Asia(Wild Protection,Destruction and Extinction)

    • Author(s)
      Li, S., Dong, S., Kimura, Akamatsu,T., Kexiong Wang, Ding Wang
    • Total Pages
      343-355
    • Publisher
      Nova Science Pub Inc.、Detection of Yangtze finless porpoise in the Poyang Lake mouth area via passive acoustic data-loggers.
  • [Remarks]

    • URL

      http://cse.fra.affrc.go.jp/akamatsu/at/homepage.html

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Published: 2012-01-26   Modified: 2016-04-21  

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