Genetic basis for key traits of stickleback freshwater coloniztion

• Project/Area Number: 15H02418
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: National Institute of Genetics
• Principal Investigator: Kitano Jun 国立遺伝学研究所, 集団遺伝研究系, 教授 (80346105)
• Co-Investigator(Renkei-kenkyūsha): MAKINO TAKASHI 東北大学, 生命科学研究科, 准教授 (20443442)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥40,430,000 (Direct Cost: ¥31,100,000、Indirect Cost: ¥9,330,000); Fiscal Year 2017: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000); Fiscal Year 2016: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000); Fiscal Year 2015: ¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
• Keywords: 進化 / 適応 / 生態 / 遺伝 / ゲノム / 適応放散 / 適応進化 / 種分化 / トゲウオ / 不飽和脂肪酸 / 一細胞解析

Outline of Final Research Achievements

Our phylogenomic analysis revealed that all Japanese freshwater populations are derived from Gasterosteus aculetus rather than Gasterosteus nipponics. We found that differences in the ability to produce an poly unsaturated fatty acids and the copy number of an enzyme explains the different ability to colonize freshwater.

Research Products

• [Int'l Joint Research] University of Oslo(ノルウェー)
• [Int'l Joint Research] University of Bern(スイス)
• [Int'l Joint Research] ベルン大学(スイス)
• [Int'l Joint Research] 北アリゾナ大学(米国)
• [Int'l Joint Research] University of Bern(Switzerland)
• [Int'l Joint Research] Fred Hutchinson Cancer Research Center(米国)
• [Journal Article] Genomic landscape at a late stage of stickleback speciation: high genomic divergence interspersed by small localized regions of introgression (2018)
  • Author(s): Ravinet, M., Yoshida, K., Shigenobu, S., Toyoda, A., Fujiyama, A., and Kitano, J.
  • Journal Title: PLoS Genetics Volume: in press
  • Peer Reviewed / Open Access
• [Journal Article] Genetic and stable isotope analyses of threespine stickleback from the Bering and Chukchi Seas. (2017)
  • Author(s): Kume, M. Kitano, J.
  • Journal Title: Ichthyological Research Volume: in press Issue: 4 Pages: 478-480
  • DOI: 10.1007/s10228-017-0580-9
  • NAID: 40021381049
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] トゲウオにおける淡水進出の鍵形質の遺伝基盤 (2017)
  • Author(s): 北野潤
  • Organizer: 「配偶子産生制御」第7回領域会議
  • Place of Presentation: 東京海洋大学
  • Year and Date: 2017-03-15
  • Invited
• [Presentation] Genomic signatures of introgression at the late stage of stickleback speciation (2017)
  • Author(s): Jun Kitano, Mark Ravinet, Asano Ishikawa, Kohta Yoshida, Ryo Kakioka
  • Organizer: European Society for Evolutionary Biology 2017
  • Int'l Joint Research
• [Presentation] A key role for an omega-3 fatty acid desaturase in stickleback freshwater colonization (2017)
  • Author(s): Jun Kitano, Asano Ishikawa
  • Organizer: Society of Molecular Biology ad Evolution 2017
  • Int'l Joint Research
• [Presentation] トゲウオにおける適応進化の遺伝基盤 (2016)
  • Author(s): 北野潤
  • Organizer: IGERセミナー
  • Place of Presentation: 名古屋大学
  • Year and Date: 2016-04-28
  • Invited
• [Presentation] Genetic mechanisms of colonization of new niches in sticklebacks (2015)
  • Author(s): Jun Kitano
  • Organizer: Lecture Series in Ecology and Evolution
  • Place of Presentation: University of Bern, Switzerland
  • Year and Date: 2015-10-11
  • Invited
• [Presentation] Drivers of sex chromosome-autosome fusions and their roles in speciation (2015)
  • Author(s): Jun Kitano
  • Organizer: AGA Presidents Symposium, Chromosome Evolution: Molecular Mechanisms and Evolutionary Consequences
  • Place of Presentation: Bainbridge Island, USA
  • Year and Date: 2015-08-17
  • Invited
• [Presentation] Why are there so many species with Y- autosome fusions? (2015)
  • Author(s): Kitano J. Pennell M., Kirkpatrick M., Otto S., Vamosi J., Peichel C.
  • Organizer: ESEB 2015
  • Place of Presentation: Lausanne, Switzerland
  • Year and Date: 2015-08-10
  • Int'l Joint Research
• [Remarks] 研究内容
  • URL: https://www.nig.ac.jp/labs/EcoGene/research.html