著者

Mizuki Matsunuma Nene Nagaya Koichi Hidaka Yoshiaki Kai

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.27, no.2, pp.259-277, 2022-09-08 (Released:2022-09-08)

参考文献数

59

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A taxonomic review of Albula Scopoli, 1777 (Albuliformes: Albulidae) in Japanese and adjacent waters, based on morphology and mtDNA cytochrome b sequence data, resulted in the recognition of four species: Albula argentea (Forster, 1801), Albula glossodonta (Forsskål, 1775), Albula koreana Kwun and Kim, 2011, and Albula oligolepis Hidaka, Iwatsuki, and Randall, 2008. Although Japanese ichthyologists have long considered A. glossodonta and a second Albula species (referred to by the Japanese name “Sotoiwashi”) to be distributed in Japanese waters, the latter having been reported as A. koreana or Albula sp. in recent literature, the present study revealed that, in fact, “Sotoiwashi” included three species, viz., A. argentea, A. koreana and A. oligolepis. Examined specimens of the latter three species represent the first reliable records of all three from Japanese waters, with comparative specimens of A. koreana from Vietnam and Malaysia also representing distributional range extensions (formerly known only from Korea and Taiwan). Albula koreana is readily distinguished from Japanese congeners by the striking yellow stripe on the cheek (just behind the mouth) in the former, a large dark blotch in front of the nostril, a dark oval blotch under an arc-shaped dark band on the snout tip, and greater numbers of body scales and vertebrae. As has been previously demonstrated, A. argentea and A. oligolepis are distinguished by pored lateral-line scale numbers (68–74 in the former vs. 61–67 in the latter) and total vertebrae (68–75 vs. 64–70). Updated distributional information shows A. argentea to be distributed from Indonesia east to French Polynesia, and north to Japan and Korea (there being no reliable records from Sri Lanka, Madagascar or the Hawaiian Islands); A. koreana in waters off Korea, Japan, Taiwan, Vietnam and Malaysia (east coast of Malay Peninsula); and A. oligolepis from the east coast of Africa to the Coral Sea, and north to Japan.

著者

Mizuki Matsunuma Shinichirou Ikeguchi Yoshiaki Kai

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.25, no.2, pp.135-144, 2020-08-07 (Released:2020-08-07)

参考文献数

46

被引用文献数

1

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Canthidermis macrolepis (Boulenger, 1888) is newly recorded from Japan and Micronesia on the basis of nine specimens (206.9–349.8 mm SL), having been previously reported from the northwestern Indian Ocean and northern South China Sea (the latter based solely on DNA barcoding). The species is probably widespread throughout the Indo-West Pacific region but has been confused with Canthidermis maculata (Bloch, 1786). Detailed morphological comparisons of both species resulted in the following differences being recognized between them: numbers of body scale rows [38–41 (modally 40) in C. macrolepis vs. 40–49 (44) in C. maculata], second dorsal-fin rays [25–27 (26) vs. 22–26 (24)], anal-fin rays [22–24 (23) vs. 20–23 (21)] and pectoral-fin rays [14–16 (15) vs. 13–15 (14)]. Sequences of the mitochondrial DNA COI gene determined from the presently-reported specimens of C. macrolepis, which also differed in color from similarly sized C. maculata, having a uniformly grayish body without spots, were also compared with congeners. The Japanese standard name “Bouzu-mongara” is newly proposed for C. macrolepis.

著者

Mizuki Matsunuma Fumihito Tashiro Hiroyuki Motomura

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.29, no.1, pp.9-21, 2024-01-11 (Released:2024-01-11)

参考文献数

31

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Pseudorhombus elevatus Ogilby, 1912 and P. quinquocellatus Weber and de Beaufort, 1929 (Teleostei: Paralichthyidae) are newly recorded from Japan, based on 35 and two specimens, respectively, from Okinawa Island, Ryukyu Islands. Although both species have previously been recorded from Taiwan, no Japanese records are known to date. Pseudorhombus elevatus is characterized, and readily distinguished from Japanese congeners, by numerous minute teeth on both jaws, three dark blotches along the straight section of the ocular-side trunk lateral line, and dorsal- and anal-fin ray numbers. Pseudorhombus quinquocellatus resembles P. pentophthalmus Günther, 1862 and P. oculocirris Amaoka, 1969, all sharing five dark ocelli on the ocular-side body (two pairs of ocelli above and below the lateral line plus a single ocellus on the posterior portion of the lateral line). However, the former is characterized by strong caniniform teeth on both jaws (vs. no strong caniniform teeth in P. pentophthalmus and P. oculocirris); fewer lower gill rakers (9–11 in Japanese specimens) (vs. 15–21); and two dark skin flaps along the gill opening below the pectoral-fin base (vs. absent). The status of the type specimens of P. quinquocellatus was also considered, all three being regarded as syntypes, in the absence of a formal lectotype proposal. New standard Japanese names, “Maru-ganzō-birame” and “Niten-ganzō-birame,” are proposed for P. elevatus and P. quinquocellatus, respectively, the name “Itsutsume-ganzō” now being referred to P. megalops Fowler, 1934.

著者

Mizuki Matsunuma Nozomu Muto

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.25, no.2, pp.107-116, 2020-05-15 (Released:2020-05-15)

参考文献数

42

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A single pelagic juvenile (23.1 mm standard length) of a lophiid fish, collected from 100–115 m in depth in the East China Sea, was identified as Sladenia zhui Ni, Wu, and Li, 2002, originally described from the East and South China Seas, on the basis of meristic counts [I-I-I-I, 10 dorsal-fin rays (2 post-cephalic spines); 7 anal-fin rays; and 19 pectoral-fin rays] and mitochondrial DNA sequences. Reported here for the first time, juveniles of Sladenia Regan, 1908 are uniquely characterized by inflated, balloon-like skin surrounding the head and body, and undeveloped head spines. The Japanese names “Daruma-ankou-zoku” and “Daruma-ankou” are proposed herein for the genus Sladenia and S. zhui, respectively.

著者

Mizuki Matsunuma Mao Sato Yoshiaki Kai

出版者

日本動物分類学会

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.22, no.1, pp.87-97, 2017-05-25 (Released:2017-05-25)

参考文献数

26

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A poorly known sculpin, Atopocottus tribranchius Bolin, 1936 (Cottidae), was redescribed on the basis of 56 specimens from several localities in Japan; off Yamaguchi, Kyoto and Niigata Prefectures on the Japan Sea coast, and Kochi Prefecture on the Pacific coast, and in the northern East China Sea. The specimens from Yamaguchi, Kochi and the East China Sea represent the first specimen-based records for the species from those regions. Minute organs on the trunk surface, previously regarded as lateral-line pores, are most likely epidermal pits containing free neuromasts, and lateral-line pores are restricted to a row of embedded lateral-line scales on the anterodorsal portion of the body. Diagnostic characters of the monotypic genus, Atopocottus Bolin, 1936, are here reviewed on the basis of external and selected osteological characters, described for the first time. The genus is more similar to the Southern Hemisphere (Indonesia, Australia and New Zealand) genus Antipodocottus Bolin, 1952 than to Stlengis Jordan and Starks, 1904, known only from Japan, in having poorly developed cephalic sensory canals with few pores and the lateral-line scales in a simple canal without dorsal and ventral branches. However, Atopocottus differs from Antipodocottus in having fewer lateral-line scales (3–5 vs. 5–33 in the latter); the uppermost preopercular spine with 1–6 dorsal branches, their length and width becoming shorter and narrower, respectively, toward the spine tip, some of them with two spinous points (vs. 2–5 simple, similarly sized dorsal branches); and lacking a supraocular tentacle (vs. usually present). A more comprehensive examination of the two genera is necessary to determine their monophyly.

著者

Yuta Inoue Hiromitsu Endo Hiroyuki Motomura Mizuki Matsunuma

出版者

The Japanese Society of Systematic Zoology

雑誌

Species Diversity (ISSN:13421670)

巻号頁・発行日

vol.25, no.1, pp.39-47, 2020-01-25 (Released:2020-01-25)

参考文献数

26

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Epinephelus kupangensis Tucker, Kurniasih, and Craig, 2016, previously known from the Indo-West Pacific as far north as Taiwan, was recorded from Japan for the first time on the basis of two specimens (98.1–384.6 mm SL) collected from Tosa Bay, Kochi and Okinawa prefectures. The Kochi specimen had been previously reported as the first Japanese specimen of “Kokuten-aohata”, Epinephelus amblycephalus (Bleeker, 1857). Epinephelus kupangensis differs from the latter in having slightly lower numbers of lateral-line scales (46–49 vs. 48–51) and lateral scale series 91–99 (vs. 103–120), and lacking a U-shaped white marking dorsolaterally on the head and a white band below the orbit (vs. both present). The standard Japanese name “Kokuten-aohata” should be applied to E. kupangensis, the new standard Japanese name “Yahazu-aohata” being proposed for E. amblycephalus.