琵琶湖南湖の南部で得られたビワマス成熟雄の記録
論文ID: 20-001
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論文ID: 20-001
A single mature migrating male (371 mm SL) Biwa salmon (Oncorhynchus masou subsp.), collected on 11 December 2019 off the mouth of the Yanagawa River, feeding the South Basin of Lake Biwa, Japan, represents the southernmost record of that subspecies from Lake Biwa and first specimen-based record from the South Basin. Together with anecdotal evidence, the record indicates that O. masou subsp. likely utilized South Basin feeder streams as spawning grounds before the latter were artificially revetmented.
