著者

樋口 淳也 Kim Seong-yong 河合 俊郎

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

pp.23-013, (Released:2023-10-05)

参考文献数

27

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A single specimen of Krusensterniella (Perciformes: Zoarcidae), collected off Tsugaru Peninsula, Aomori, Japan, was identified as Krusensterniella squamosa Chernova, 2022, characterized by three pungent spines in the dorsal fin, 47 dorsal-fin spines, at least 101 dorsal-fin rays and 103 vertebrae, and previously known only from the holotype, collected off Iwate, Japan. The new standard Japanese name “Uroko-haregaji”, referring to the scaled body, is proposed for the species. Records of Krusensterniella notabilis from Japan are unlikely to be that species, since many identification sources for Japanese fishes in correctly described K. notabilis as having a broad scaled area on the body.

著者

樋口 淳也 河合 俊郎 宇治 利樹 今井 圭理

出版者

北海道大学大学院水産科学研究院

雑誌

北海道大学水産科学研究彙報 (ISSN:24353353)

巻号頁・発行日

vol.71, no.1, pp.21-28, 2021-08-03

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Seven specimens of fishes and three specimens of crabs were collected with drifting algae by T/S Oshoro-maru from off the Pacific coast of Tohoku region, northern Japan. In fishes, a single specimen was identified as Histrio histrio (Linnaeus, 1758), five specimens as Oplegnathus punctatus (Temminck and Schlegel, 1844) and a single specimen as Stephanolepis cirrhifer (Temminck and Schlegel, 1850). In crabs, except a single specimen of megalopa, a single specimen was identified as Guinusia dentipes (De Haan, 1835) and a single specimen as Portunus (Portunus) sanguinolentus sanguinolentus (Herbst, 1783). Because previous northernmost records of P. (P.) sanguinolentus sanguinolentus were reported from Boso Peninsula in the Pacific Ocean and Akita Prefecture in the Sea of Japan, the present specimen represents the northernmost record of the species in the Pacific Ocean.

著者

河合 俊郎

出版者

一般社団法人 日本魚類学会

雑誌

魚類学雑誌 (ISSN:00215090)

巻号頁・発行日

vol.64, no.2, pp.175-178, 2017-11-25 (Released:2018-06-19)

参考文献数

7

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Armored searobins in the Indo-West Pacific genus Paraheminodus Kamohara, 1958 (Peristediidae), characterized by upper jaw teeth, the lateral head margin smooth, posterior pairs of lower lateral row bony plates separated from each other, and unbranched barbels on the lower jaw (except for posteriormost lip and chin barbels), include four species: Paraheminodus laticephalus (Kamohara, 1952), P. murrayi (Günther, 1880), P. kamoharai Kawai, Imamura and Nakaya, 2004 (known only from a single record from the Sulu Sea, Philippines) and P. longirostralis Kawai, Nakaya and Séret, 2008. To date, only P. laticephalus and P. murrayi have been recorded from Japan. However, a single specimen of P. kamoharai (114.2 mm in standard length) collected from Kochi, Japan, was found in the collection of Kyoto University, Japan, being the second record of the species and first from Japanese waters. Paraheminodus kamoharai is re-diagnosed, having 5+1+17– 20=23–26 gill rakers, rostral projection length 42.5–47.0% of head length, upper jaw length 40.5–42.3% of head length, lower jaw length 36.5–37.7% of head length, pectoral fin length 57.5–66.4% of head length, preopercular spine length 34.9–40.9% of head length, distance from anus to caudal fin 46.9–49.3% of standard length, and both forwardly and backwardly directed spines on the posterior upper lateral row bony plates. The new Japanese standard name “Kamohara-kihoubou” is proposed for the species.

著者

大橋 慎平 永野 優季 加藤 克 河合 俊郎 矢部 衞

雑誌

北海道大学水産科学研究彙報 (ISSN:13461842)

巻号頁・発行日

vol.64, no.2, pp.55-69, 2014-07-31

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Approximately 3,500 fish specimens were transferred from the Faculty of Agriculture, Hokkaido University to the Fisheries Science Center, Hokkaido University Museum (HUMZ). The authors identified fishes from at least 16 orders, 57 families, 109 genera and 145 species. Although most specimens were collected around Japanese waters, several species were collected from other areas, e.g., Eleginops maclovinus (Eleginopsidae) from Chile and Luciocephalus pulcher (Osphronemidae) from India.

著者

中田 和義 永野 優季 大橋 慎平 河合 俊郎 大高 明史

出版者

日本ベントス学会

雑誌

日本ベントス学会誌 (ISSN:1345112X)

巻号頁・発行日

vol.69, no.2, pp.90-94, 2014-12-31 (Released:2016-02-06)

参考文献数

24

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In Lake Akan, Hokkaido, northern Japan, the local population of the native and endangered Japanese crayfish Cambaroides japonicus (De Haan, 1841) is extinct, whereas the signal crayfish Pacifastacus leniusculus (Dana, 1852), an invasive species from North America, has become established and rapidly increased. This study provides information about specimens of C. japonicus preserved by Dr. Saburo Hatta from the lake in 1872. The six specimens (two males and four non-ovigerous females) are valuable evidence of C. japonicus formerly inhabiting Lake Akan. The body sizes of the specimens were 24.4–29.5 mm in carapace length and 55.7–67.4 mm in total length, and the estimated age of the largest specimen was ten years, indicating that Lake Akan of that time provided a suitable habitat. Twenty-two ectosymbiotic crayfish worms (Annelida, Clitellata, Branchiobdellida) were found attached to the specimens. Three branchiobdellidan species were identified: Cirrodrilus cirratus Pierantoni, 1905, C. inukaii (Yamaguchi, 1934) and C. megalodentatus (Yamaguchi, 1934). This is the first record of the latter two species from Lake Akan.