Inference of oversea dispersal abilities of amphibians and terrestrial reptiles in the central Ryukyu based on the island equilibrium model

• Project/Area Number: 22570094
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: University of the Ryukyus
• Principal Investigator: TODA Mamoru 琉球大学, 熱帯生物圏研究センター, 准教授 (40378534)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 両生類 / 爬虫類 / 琉球列島 / 分布 / 島嶼集団 / 洋上分散 / 遺伝解析 / 遺伝変異 / 分類学 / 生物地理学

Research Abstract

Distributions of amphibians and reptiles in many islands of the Amami and Okinawa Groups were surveyed. An analysis using area-distance model showed that in a few species geographic distance from main-islands had a significant explanatory power for presence/absence of the species in an island, suggesting that overseas dispersals have taken some role in maintenance of island populations in those species. However, genetic analysis for a few species did not support this view.

Research Products

• [Journal Article] Development and characterization of polymorphic microsatellite marker for East Asian species of the genus Plestiodon (2013)
  • Author(s): Kurita K, Hikida T, Toda M
  • Journal Title: Conservation Genetics Resources Pages: 355-357
  • Peer Reviewed
• [Journal Article] 渡嘉敷村の中島およびハテ島の爬虫類相 (2011)
  • Author(s): 栗田隆気,角田羊平,戸田守
  • Journal Title: Akamata Volume: 22 Pages: 21-27
  • Peer Reviewed
• [Journal Article] 渡嘉敷村の中島およびハテ島の爬虫類相 (2011)
  • Author(s): 栗田隆気, 角田羊平, 戸田守
  • Journal Title: Akamata Volume: 22(印刷中) Pages: 21-27
  • Peer Reviewed
• [Presentation] Genetic Population Structure and Genetic Diversity in the Island Populations of the Ryukyu Five-Lined Skink, Plestiodon marginatus(Reptilia: Scincidae) (2013)
  • Author(s): Kurita K, Toda M, Hikida T
  • Organizer: 第60回日本生態学会大会
  • Place of Presentation: 静岡
• [Presentation] Genetic population structure and genetic diversity in the island populations of the Ryukyu five-lined skink, Plestiodon marginatus(Reptilia: Scincidae) JSPS AA (2012)
  • Author(s): Kurita K, Toda M, Hikida T
  • Organizer: Science Platform Program " Second International. Symposium on East Asian Vertebrate Species Diversity"
  • Place of Presentation: 京都
• [Presentation] Genetic population structure and genetic diversity in the island populations of the Ryukyu five-lined skink, Plestiodon marginatus (Reptilia: Scincidae) (2012)
  • Author(s): Kurita K, Toda M, Hikida T
  • Organizer: JSPS AA Science Platform Program “Second International Symposium on East Asian Vertebrate Species Diversity”
  • Place of Presentation: Kyoto