We studied genetic variations at the mitochondrial cytochrome b (cyt b) gene in wild populations of the Medaka fish (Oryzias latipes) from 58 sites of Yamagata prefecture by the polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLPs). In addition, we determined the nucleotide sequences of cyt b from 13 specimens and reconstructed a phylogenetic tree. Our results showed that, in Yamagata prefecture, the wild populations of the Medaka fish were mainly divided into two groups: One group distributed in the northern coastal area and another distributed in the inland area. The boundary between those areas was detected in Mamurogawa-machi, Sakekawa-mura and Tozawa-mura. Key words: Geographic variation, Oryzias latipes, mitochondrial DNA,Yamagata prefecture.//佐々木,隆行/ササキ, タカユキ/Sasaki, Takayuki/渡辺, 明彦/ワタナベ, アキヒコ/Watanabe, Akihiko/鬼武, 一夫/オニタケ, カズオ/Onitake, Kazuo
雑誌名
山形大学紀要. 自然科学 = Bulletin of Yamagata University. Natural Science
巻
16
号
2
ページ
55 - 69
発行年
2006-02-15
書誌レコードID
AN0024300X
その他の言語のタイトル
Genetic Variation in Wild Populations of the Medaka, Oryzias latipes, in Yamagata Prefecture
山形県内に生息する野生メダカにおける種内分化の分子遺伝学的解析
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