| 要旨トップ | 目次 | 日本生態学会第61回全国大会 (2014年3月、広島) 講演要旨
ESJ61 Abstract

一般講演（口頭発表） C2-08 (Oral presentation)

Range－wide population genetic structure and clonality of a tropical seagrass, Cymodocea rotundata across the Western Pacific region

Dan M. Arriesgado1, 2, 5, Chunlan Lian2, Yuichi Nakajima2, Yu Matsuki2, Hiroyuki Kurokochi2, Jianmin Tao3, Miguel D. Fortes4, Wilfredo H. Uy5, Wilfredo L. Campos4, Masahiro Nakaoka6, Kazuo Nadaoka1; 1 Tokyo Institute of Technology;2 The University of Tokyo; 3 Nanjing Agricultural University, China; 4 University of the Philippines;5 Mindanao State University, Philippines; 6 Hokkaido University

Knowledge about population genetic structure and clonal diversity of seagrasses is of central relevance for conservation and management. Until now no study deals with the genetic attributes of Cymodocea rotundata species. Here, we described the range-wide population genetic structure and clonality of C. rotundata at 46 sites, spanning the Philippines, Ryukyu and Hainan Islands, using 11 SSR markers. C. rotundata populations were characterized by a very low to high levels of clonal and genetic diversity. AMOVA and F ST showed significant genetic differentiation within and among geographic populations. The STRUCTURE analysis revealed Ryukyu populations were mosaic of genets from the populations of northeastern Philippines. The Kuroshio Current plays an important role in the establishment of meadows of C. rotundata in Ryukyu Islands, northern limits of its distribution.

日本生態学会