- 著者
- Kazuya Nagasawa Shigehiko Urawa
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.22, no.2, pp.167-173, 2017-11-25 (Released:2017-12-05)
- 参考文献数
- 48
- 被引用文献数
- 2
The lernaeopodid copepod Tracheliastes sachalinensis Markevich, 1936 was found on the fins of three species of the subfamily Leuciscinae Bonaparte, 1846 (Cypriniformes: Cyprinidae): big-scaled redfin, Tribolodon hakonensis (Günther, 1877); Sakhalin redfin, Tribolodon sachalinensis (Nikolskii, 1899); and lake minnow Rhynchocypris percnurus (Pallas, 1814); collected in three lakes (Lake Tôro, Lake Shirarutoro, and Lake Abashiri) and two rivers (Mena River and Jirô-sawa River), Hokkaido, northern Japan. These findings represent the first records of Tracheliastes sachalinensis from Japan and also from outside of Russia, in which the copepod has hitherto been found. The species is specific to leuciscine fishes in the subarctic region of the Russian Far East and Japan. We also provide a review of parasitic copepods of freshwater fishes from Hokkaido.
- 著者
- Kazuya Nagasawa Shigehiko Urawa
- 出版者
- Carcinological Society of Japan
- 雑誌
- Crustacean Research (ISSN:02873478)
- 巻号頁・発行日
- vol.51, pp.91-101, 2022-08-26 (Released:2022-08-26)
- 参考文献数
- 36
- 被引用文献数
- 3
Two copepod parasites, Salmincola edwardsii (Olsson, 1869) and S. markewitschi Shedko & Shedko, 2002, were collected from salmonids in eastern Hokkaido, Japan: these copepods were taken from whitespotted char, Salvelinus leucomaenis (Pallas, 1814), and brook trout, S. fontinalis (Mitchill, 1814) in the Nishibetsu River, and Salmincola edwardsii from southern Asian Dolly Varden, Salvelinus malma krascheninnikova Taranetz, 1933, in the Ichani River. Both whitespotted char and brook trout are new Japanese hosts for Salmincola edwardsii, and the two rivers represent new locality records for S. edwardsii and S. markewitschi. The Nishibetsu River is regarded as a new southernmost distribution limit of S. edwardsii in Asia and is also recorded as the first locality of S. markewitschi infecting wild salmonids in Hokkaido. The morphology of S. edwardsii and S. markewitschi is reported based on adult female specimens collected from the salmonids.