著者

金子 有子

出版者

東洋大学国際哲学研究センター(「エコ・フィロソフィ」学際研究イニシアティブ)事務局

雑誌

「エコ・フィロソフィ」研究 = Eco-Philosophy (ISSN:18846904)

巻号頁・発行日

vol.11, pp.101-112, 2017-03

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The clonal diversities of Potamogeton pectinatus L. (Potamogetonaceae) and Vallisneria asiatica var. biwaensis (Hydrocharitaceae) were evaluated for conservation of genetic diversity of these species. Potamogeton pectinatus is a rare submerged macrophyte in Japan. Protection of the genetic variability of these rare and endemic species is required from a viewpoint of conservation genetic. According to microsatellite analysis, the clonal diversities (Shannon’s index) of P. pectinatus populations varied widely among 11 sampled populations, with ranging from 0.000 to 0.990. The low clonal diversities were found in some populations in Kinki districts. These populations were affected by the anthropogenic disturbances because of cutting these areas before flowering. Vallisneria asiatica var. biwaensis is an endemic submerged macrophyte in the Lake Biwa-Yodo River system. Local populations of V. asiatica var. biwaensis have decreased in the south basin of Lake Biwa since the 1970s. Genetic variation of this species was evaluated by using allozyme analysis. The clonal diversities (Simpson’s D index) of 13 sampled populations were ranging from 0.782 to 0.972. These results would be useful information for development of conservation program.