Group structure in Indo-Pacific bottlenose dolphin using genetic method

• Project/Area Number: 25890020
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Conservation of biological resources
• Research Institution: Tokai University
• Principal Investigator: KITA YUkI 東海大学, 生物学部, 講師 (30710917)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: ミナミハンドウイルカ / 集団遺伝学 / 血縁関係 / 群構造 / 保全管理 / 群れ構造

Outline of Final Research Achievements

Kin relationship was investigated wild Indo-Pacific bottlenose dolphin in Mikura Island, Tokyo, Japan using mitochondrial DNA and 12 microsatellite DNA markers.
As a result of genetic analysis, 2 pairs of dolphins weren't a brother, but it was said that they were a brother by underwater observation. It was suggested that the difference in these results depends on characteristic natural markings on the body wasn't obtained before a offsprings were weaned from their mothers. Moreover, 3 individuals of the paternity dolphin who doesn't participate in offspring rearing was suggested.
It's expected that genetic and kin relationship information becomes basic information like identification information. So, it's necessary to be using with an underwater observation and be doing a genetic analysis to do appropriate maintenance and management.

Research Products

• [Journal Article] Genetic and family structure in a group of 165 common bottlenose dolphins caught off the Japanese coast (2013)
  • Author(s): Y. F. Kita, K. Hosomichi1, S. Suzuki1, H. Inoko1, T. Shiina, M. Watanabe, A. Tanaka, T. Horie, H. Ohizumi, S. Tanak, T. Iwasak, M. Ota, J. K. Kulski
  • Journal Title: Mar. Mamm. Sci. Volume: 29 Issue: 3 Pages: 474-496
  • DOI: 10.1111/j.1748-7692.2012.00581.x
  • Peer Reviewed
• [Presentation] 野生ミナミハンドウイルカにおける養子とりの観察 (2014)
  • Author(s): 酒井麻衣，北夕紀，小木万布，篠原正典，森阪匡通，椎名隆，井上-村山美穂
  • Organizer: 日本哺乳類学会2014年度大会
  • Place of Presentation: 京都大学 吉田キャンパス
  • Year and Date: 2014-09-04 – 2014-09-07
• [Presentation] 御蔵島ミナミハンドウイルカにおける血縁解析 (2014)
  • Author(s): 北夕紀, 村山美穂, 篠原正典, 酒井麻衣, 森阪匡通, 小木万布, 椎名隆
  • Organizer: 日本水産学会
  • Place of Presentation: 北海道大学(北海道函館市)