Conservation of biodiversity hotspots by taking advantage of genomic information and ex situ populations

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04414
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Kyoto University
• Principal Investigator: Isagi Yuji 京都大学, 農学研究科, 教授 (50325130)
• Co-Investigator(Kenkyū-buntansha): 邑田 仁 東京大学, 大学院理学系研究科(理学部), 教授 (90134452)
• Research Collaborator: KOMAKI Yoshiteru 東京大学, 大学院理学系研究科
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 保全ゲノミクス / 絶滅危惧種 / 固有種 / 種分化 / 隠蔽種 / 小笠原諸島

Outline of Final Research Achievements

We conducted analyses of conservation genomics on wild and ex situ individuals of critically endangered endemic plant species of the Bonin Islands. Using genomic information from RAD-seq and RNA-seq, genetic diversity, genetic differentiations, spatial genetic structure, intraspecies phylogeny and genes selected during radiative speciation for endangered endemics were inferred. We found species specific genetic traits for each taxon, such that, species without any genetic diversity in both wild and ex situ populations, one with significantly accumulated deteriorated genes and those under processes of speciation containing cryptic species. These findings are useful to achieve appropriate biological conservation activities.

Free Research Field

保全遺伝学