Naohiko Takeshita

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Marine fish generally show higher genetic diversity and shallower population structure than freshwater fish, but data for rare species are lacking. A latid fish, akame (Lates japonicus), is a rare, large predatory fish endemic to Japan, occurring mainly in the estuaries and coastal waters of Kochi and Miyazaki prefectures. Among species of Lates, akame is(More)
A markless form of the red-spotted masu salmon Oncorhynchus masou ishikawae (iwame) co-exists with the normal color form (amago) in several mountain streams in south-west Japan. In a headwater stream of the Ôno River, Kyushu, amago has recently disappeared from the upper reach above a natural waterfall barrier, and only iwame has survived in this area. In(More)
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