Monitor the adaptation of released captive-raised Amazonian manatees to the wild by animal-borne recorders

• Project/Area Number: 24710272
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Resource conservation science
• Research Institution: The University of Tokyo (2013); Fisheries Research Agency (2012)
• Principal Investigator: KIKUCHI mumi 東京大学, 農学生命科学研究科, 特任研究員 (40586020)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 海牛類 / マナティー / 摂餌 / 鳴音 / アマゾン川 / ブラジル / 保全 / バイオロギング / 行動

Research Abstract

The overall objective is to monitor the adaptation of released captive-raised Amazonian manatees to the wild in order to improve the rehabilitation program. Sirenians are the only extant herbivorous aquatic mammals. Despite utilizing coastal shallow habitats, much remains unknown about the feeding behaviour due to the limitations, especially for taxa that inhabit dark water habitats: Amazonian manatees.
One of the vital questions about released manatees is when they are feeding on their own once released. In this study, we focused on the direct recording of the manatee feeding sounds. We aim to detect the feeding events from the recorded sound in order to understand when, what kind of plants, and how much the manatee eat after releasing into the wild.

Research Products

• [Journal Article] Detection of manatee feeding events by animal-borne underwater sound recorders (2013)
  • Author(s): Kikuchi, M., Akamatsu, T.
  • Journal Title: Journal of the Marine Biological Association of the United Kingdom Pages: 1-8
  • Peer Reviewed
• [Journal Article] Detection of manatee feeding events by animal-borne underwater sound recorders (2013)
  • Author(s): Kikuchi, M., Akamatsu, T., Gonzalez-Socoloske, D., de Souza, D. A., Olivera-Gomez, L. D., da Silva, V. M. F.
  • Journal Title: Journal of the Marine Biological Association of the United Kingdom Volume: first view article Issue: 6 Pages: 1-8
  • DOI: 10.1017/s0025315413001343
  • Peer Reviewed
• [Presentation] Detection of manatee feeding events by animal-borne underwater sound recorders (2013)
  • Author(s): Mumi Kikuchi, Tomonari Akamatsu
  • Organizer: International Sirenian Symposium
  • Place of Presentation: NZ(口頭発表)
  • Year and Date: 2013-12-07
• [Presentation] The usage of vocalization in captive manatees (2013)
  • Author(s): Mumi Kikuchi, Tomonari Akamatsu, Diogo A.
  • Organizer: 20th Biennial conference on the biology of marine mammals
  • Place of Presentation: NZ(ポスター発表)
• [Presentation] The usage of vocalization in captive manatees. (2013)
  • Author(s): Mumi Kikuchi, Tomonari Akamatsu, Diogo A. de Souza, Vera M. F. da Silva, Daniel Gonzalez-Socoloske, Leon D. Olivera-Gomez
  • Organizer: 20th Biennial conference on the biology of marine mammals
  • Place of Presentation: Dunedin, New Zealand
• [Presentation] Detection of manatee feeding events by animal-borne underwater sound recorders. (2013)
  • Author(s): Mumi Kikuchi, Tomonari Akamatsu, Daniel Gonzalez-Socoloske, Diogo A. de Souza, Leon D. Olivera-Gomez, Vera M. F. da Silva
  • Organizer: International Sirenian Symposium
  • Place of Presentation: Dunedin, New Zealand
• [Presentation] Acoustic tagging for counting feeding events of captive Amazonian manatees. (2012)
  • Author(s): Mumi Kikuchi, Tomonari Akamatsu, Diogo A. de Souza, Fernando C. W. Rosas, Vera M. F. da Silva
  • Organizer: Acoustics 2012 Hong Kong
  • Place of Presentation: 香港
• [Presentation] 3-D movement and feeding events of Amazonian manatees (Trichechus inunguis) monitored by animal-born digital recorders and their application for future conservations (2012)
  • Author(s): Mumi Kikuchi, T. Akamatsu, D. A. de Souza, F. C. W. Rosas, V. M. F. da Silva
  • Organizer: International Network Workshop on Tropical Biodiversity Conservation
  • Place of Presentation: ブラジル
• [Remarks] マナティー研究facebook page
  • URL: https://www.facebook.com/manatee.mumi?ref=hlStudyofmanatees
• [Remarks] study of manatees（マナティー研究）
  • URL: https://www.facebook.com/manatee.mumi?ref=hl