Careproctus iacchus, a new variegated snailfish (Liparidae) from the Seas of Japan and Okhotsk

Kai, Yoshiaki; Tohkairin, Akira; Fujiwara, Kunihiro; Hamatsu, Tomonori

doi:10.1007/s10228-018-0626-7

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Several new Careproctus species have recently been described from the West Pacific: C. iacchus Kai, Tohkairin, Fujiwara et Hamatsu, 2018, C. kamikawai Orr, 2012, C. lycopersicus Orr, 2012, C. nelsoni Orr, 2016, C. notosaikaiensis Kai, Ikeguchi et Nakabo, 2011, C. rotundifrons Sakurai et Shinohara, 2008, C. shigemii Matsuzaki, Mori, Kamiunten, Yanagimoto et Kai, 2020, C. staufferi Orr, 2016, C. surugaensis Murasaki, Takami et Fukui, 2017. In all of these of species, teeth are three-lobed and the number of vertebrae is less than in C. schmidti, from 42 to 58 versus 63 (Sakurai and Shinohara, 2008;Kai et al, 2011Kai et al, , 2018Orr, 2012Orr, , 2016Murasaki et al, 2017;Matsuzaki et al, 2020). The deep-sea species C. pulcher, C. globulus, C. laperousei, and C. brevipectoralis described from the Bussol Strait of the Kuril Archipelago (Chernova et al, 2020) also have fewer vertebrae, 46 or 55-57 versus 63 in C. schmidti.…”

Section: Methodsmentioning

confidence: 99%

A New Species of Snailfishes (Liparidae) of the Genus Careproctus from the Northern Slope of the Aleutin Basin (Bering Sea)

2021

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Abstract— A new species of snailfishes Careproctus schmidti sp. nov. from the northwestern part of the Bering Sea is described. The specimen was caught in the mesobenthal of the Aleutian Basin at a depth of 852–862 m (holotype ZIN no. 56 620—female TL 194 mm). It is distinguished from the majority of congeners of the North Pacific Ocean by a set of features: a large number of vertebrae (63) and rays in the fins (D 56, A 50, P 34, C 10), the presence of two pairs of pleural ribs, a relatively elongated (21% SL) pectoral fin with a notch and short lower lobe (12% SL), two suprabranchial pores, simple teeth, naked skin, and black peritoneum. In terms of meristic features, the new species is similar to three North Pacific species, but it differs from C. colletti in a short lower lobe of the pectoral fin, a flattened disc of triangular outlines, and a longer gill slit. It differs from C. roseofuscus by a lower body, a pectoral fin ventrally located and anus which opens immediately behind the disc. It differs from C. ambustus in purple-lilac color, fewer in number simple teeth with sharp apexes, in vertical and higher disposition of gill slit, shorter lower lobe of the pectoral fin, disc shape and position of the anus. The presence of an ovipositor may indicate existence of complicated reproductive behavior (such as carcinophilia or other types of reproductive commensalism). The northwestern slope of the Aleutian Basin, where a specimen of C. schmidti was caught, is located in the zone of influence of the Bering Slope Current and seasonal upwelling associated with the rise of deep waters. The composition of the ichthyocene in the area of capture is given, including up to 20 species, dominated by Macrouridae.

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Section: Methodsmentioning

confidence: 99%

A New Species of Snailfishes (Liparidae) of the Genus Careproctus from the Northern Slope of the Aleutin Basin (Bering Sea)

2021

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“…The article should be cited by using the doi number. 2011, 2018, 2021Machi et al 2012;Nakabo and Kai 2013;Orr et al 2015Orr et al , 2020Murasaki et al 2017;Matsuzaki et al 2020). Conversely, only three species are currently known from the Pacific coast of southern Japan: Careproctus rhodomelas Gilbert and Burke 1912a, Careproctus rotundifrons Sakurai and Shinohara 2008, and Careproctus surugaensis Murasaki, Takami and Fukui 2017(Sakurai and Shinohara 2008Murasaki et al 2017Murasaki et al , 2021b.…”

Section: Introductionmentioning

confidence: 99%

A new snailfish of the genus Careproctus (Cottoidei: Liparidae) from the Pacific coast of southern Japan

et al. 2022

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A new snailfish, Careproctus tomiyamai, is described on the basis of four specimens collected from Suruga Bay, Tosa Bay, and the Hyuga-nada Sea, southern Japan (600–808 m depth). It is distinguished from all currently recognized congeners by the following combination of characters: total vertebrae 56–58; dorsal-fin rays 51 or 52; anal-fin rays 44–46; pectoral-fin rays 30–32; pyloric caeca 9–13; body slender, maximum depth 15.6–22.8% standard length (SL); teeth on both jaws strongly trilobed; pectoral fin shallowly notched, longest lower lobe ray 9.8–14.3% SL [46.0–60.4% head length (HL)]; proximal pectoral radials 4 (3 + 1), upper portion of 1st and 3rd radials, and lower portion of 2nd radial notched; fenestrae in pectoral girdle 2, between scapula and 1st proximal radial, and 2nd and 3rd proximal radials; pelvic disk oval, wider than long, length 3.4–4.3% SL (14.2–19.3% HL), moderately to deeply cupped; peritoneum black in preserved specimens.

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“…The family comprises over 30 genera with 430 species in the world, and has been estimated to have exceptionally high rates of species formation (Murasaki et al 2017;Rabosky et al 2018;Fricke et al 2019). Of these genera, Careproctus Krøyer, 1862 is the most diverse with about 130 species, including 27 from Japanese waters (Kai et al 2011;Machi et al 2012;Nakabo and Kai 2013;Orr et al 2015;Matsuzaki et al 2017;Murasaki et al 2017;Kai et al 2018;Fricke et al 2019). Careproctus can be diagnosed by the following characters: a single nostril; pseudobranch absent; 6 branchiostegal rays; pelvic disk present, small to large; pectoral fins typically with fewer rays than anal fin; body color uniformly dark or light, rarely variegated (Kido 1988;Orr and Maslenikov 2007;Orr 2016).…”

Section: Introductionmentioning

confidence: 99%

First Records of the Snailfish <i>Careproctus lycopersicus</i> (Cottoidei: Liparidae) from the Western North Pacific

2019

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Four specimens (168.6-204.4 mm standard length) of Careproctus lycopersicus Orr, 2012, previously recorded from the Bering Sea and eastern Aleutian Islands, were collected from the southern Sea of Okhotsk (the Nemuro Strait, eastern Hokkaido, Japan). These specimens represent the first records of the species from the western North Pacific. A detailed description is provided for the specimens, including the intraspecific variations. The new standard Japanese name "Tomatokon'nyaku-uo" is proposed for the species.

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Careproctus iacchus, a new variegated snailfish (Liparidae) from the Seas of Japan and Okhotsk

Cited by 7 publications

References 13 publications

A New Species of Snailfishes (Liparidae) of the Genus Careproctus from the Northern Slope of the Aleutin Basin (Bering Sea)

A New Species of Snailfishes (Liparidae) of the Genus Careproctus from the Northern Slope of the Aleutin Basin (Bering Sea)

A new snailfish of the genus Careproctus (Cottoidei: Liparidae) from the Pacific coast of southern Japan

First Records of the Snailfish <i>Careproctus lycopersicus</i> (Cottoidei: Liparidae) from the Western North Pacific

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