著者

Nakabo Tetsuji Nakayama Kouji Muto Nozomu MIYAZAWA Masayuki

出版者

Springer Japan

雑誌

Ichthyological research (ISSN:13418998)

巻号頁・発行日

vol.58, no.2, pp.180-183, 2011-04-25

参考文献数

34

被引用文献数

6

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田沢湖で絶滅した固有種クニマス(サケ科)の山梨県西湖での発見. 京都大学プレスリリース. 2011-02-22.Oncorhynchus kawamurae (Osteichthyes: Salmonidae) (common name "Kunimasu"), a species endemic to Lake Tazawa, Akita Prefecture, Japan, was believed to have been extinct since 1940. However, nine specimens were discovered in March and April 2010 in Lake Saiko, Yamanashi Prefecture, one of the lakes to which eyed eggs of the species were introduced in 1935. These were identified as O. kawamurae because of having 47–62 pyloric caeca, 37–43 gill-rakers, a black-colored body, and spawning at 30–40 m depth in early spring, which are unique characteristics within Oncorhynchus. Furthermore, the distinctiveness of Kunimasu from sympatric kokanee (O. nerka) was supported by microsatellite DNA data.