Raja koreana, a new species of skate (Elasmobranchii, Rajoidei) from Korea

Jeong, Choong-Hoon; Nakabo, Tetsuji

doi:10.1007/bf02671993

Cited by 5 publications

(7 citation statements)

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“…Dipturus batis (Linnaeus 1758), Dipturus crosnieri (Séret 1989), Dipturus gigas (Ishiyama 1958), Dipturus kwangtungensis (Chu 1960), Dipturus macrocauda (Ishiyama 1955), Dipturus teevani (Bigelow and Schroeder 1951), Dipturus tengu (Jordan and Fowler 1903), and Dipturus trachyderma (Krefft and Stehmann 1975), for which data are available, is diagonally or slightly dorsoventrally elliptical (Ishihara and Ishiyama 1986;Leible and Stehmann 1987;Miyake 1986, 1990a;Séret 1989). Although rajids usually possess two pairs of obturator foramina (Hulley 1972), D. wuhanlingi has three pairs of foramina, as found also in Dipturus leptocauda (Krefft and Stehmann 1975), D. trachyderma, and Raja koreana Jeong andNakabo 1997 (Krefft andStehmann 1975;Jeong and Nakabo 1997).…”

Section: Discussionmentioning

confidence: 97%

Dipturus wuhanlingi, a new species of skates (Elasmobranchii: Rajidae) from China

Jeong

Nakabo

2008

Ichthyol Res

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Dipturus wuhanlingi, a new rajid species, is described from an immature male and female collected from the southern East China Sea and off Haimen, Shantou, in the South China Sea, respectively. The specimens conform to the genus Dipturus in having the combination of the following characters: a long rostral cartilage (length more than 60% of dorsal head length), greatly depressed and laterally expanded mesocondyle, and a total length greater than 55 cm when adult. Dipturus wuhanlingi is distinct from all other Dipturus species in the following combination of characters: a pair of scapular thorns, three or four nuchal thorns, an irregular row of lumbar thorns along the dorsal midline of the disc, a single row of tail thorns in both sexes, pores of ampullae of Lorenzini extending to just anterior to the pelvic girdle, anterior fenestra of scapulocoracoid strongly horizontally elliptical, mesocondyle located at about the middle between the procondyle and metacondyle, and three pairs of obturator foramina on the pelvic girdle.

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Section: Discussionmentioning

confidence: 97%

Dipturus wuhanlingi, a new species of skates (Elasmobranchii: Rajidae) from China

Jeong

Nakabo

2008

Ichthyol Res

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“…Rhipidion long, monolobed with spongelike surface, running along inner Color when fresh. Dorsal and ventral surfaces of body and tail almost the same both in male and female, but more blackish in male than female in general (as for female, see Jeong and Nakabo 1997). A pair of longitudinally elongated blotches having undulated contours on the middle of the dorsal surface of the grayish black disc.…”

Section: Methodsmentioning

confidence: 93%

“…Inner surface of clasper glans basically creamy white, along inner border of shield whitish and light brown, outer part of distal cleft light gray. Further description in Jeong and Nakabo (1997).…”

Section: Methodsmentioning

confidence: 98%

“…Rostral cartilage stout proximally, very slender and uncalcified distally, continuing to neurocranium, with filamentous cartilage at base; rostral shaft straight, narrow, but thick dorsoventrally; rostral appendices uncalcified, but expanded, flat, short, attached to rostral shaft for all length. Anterior fontanelle short, broad, extending forward onto the basal part of rostral cartilage Jeong and Nakabo (1997).…”

Section: Methodsmentioning

confidence: 99%

“…The alar and malar thorns were examined by light microscopy and from soft X-rays following McEachran and Konstantinou (1996). The holotype's scapulocoracoid of Raja koreana was redrawn here, because the scapular process was not sufficiently drawn by Jeong and Nakabo (1997). Total length is abbreviated as TL.…”

Section: Methodsmentioning

confidence: 99%

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Hongeo, a new skate genus (Chondrichthyes: Rajidae), with redescription of the type species

Jeong

Nakabo

2009

Ichthyol Res

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Hongeo gen. nov. is proposed following examinations of several individuals, including adult males, of the type species Raja koreana, previously described from a single adult female specimen from the southern coast of the Korean Peninsula. A number of external (including claspers, squamation, and ampullary and lateral line canal systems) and skeletal characters are newly described. The phylogenetic position of R. koreana among 26 nominal rajid supraspecific taxa plus 2 unnamed supraspecific taxa of Rajidae and 3 outgroups was estimated. According to a strict consensus tree of 20 equally parsimonious trees of 139 steps (CI = 0.626; RI = 0.850; RC = 0.532; HI = 0.374), Hongeo gen. nov. is defined by the two derived character states: rostral cartilage continuous with neurocranium and stout proximally, but very slender and uncalcified distally; and anterior fontanelle broad, extending forward onto the basal part of rostral cartilage slightly beyond the leading edge of nasal capsules. The new genus also differs from all other supraspecific taxa of Rajidae in the following combination of characters: dorsal surface of tail with a row of distinct thorns along midline in both sexes; most thorns directed anteriorly; a pair of longitudinally elongated black blotches having undulated contours on middle of dorsal surface of disc; three groups of outer buccal ampullae and tubules; three groups of nasal ampullae and tubules; hyoidean ampullae and tubules on ventral surface posteriorly extending past cloaca; rostral shaft narrow with filamentous cartilage at base; scapulocoracoid comparatively short and high with dorsoventrally elliptical anterior fenestra and expanded postventral fenestra; external margin of mesopterygium of pectoral fin slightly undulated, not sinuous, and not fused with pectoral radials; and clasper component eperon and pent present.

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Annotated checklist of the living sharks, batoids and chimaeras (Chondrichthyes) of the world, with a focus on biogeographical diversity

Weigmann

2016

Journal of Fish Biology

378

370

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An annotated checklist of the chondrichthyan fishes (sharks, batoids and chimaeras) of the world is presented. As of 7 November 2015, the number of species totals 1188, comprising 16 orders, 61 families and 199 genera. The checklist includes nine orders, 34 families, 105 genera and 509 species of sharks; six orders, 24 families, 88 genera and 630 species of batoids (skates and rays); one order, three families, six genera and 49 species of holocephalans (chimaeras). The most speciose shark orders are the Carcharhiniformes with 284 species, followed by the Squaliformes with 119. The most species-rich batoid orders are the Rajiformes with 285 species and the Myliobatiformes with 210. This checklist represents the first global checklist of chondrichthyans to include information on maximum size, geographic and depth distributions, as well as comments on taxonomically problematic species and recent and regularly overlooked synonymizations. Furthermore, a detailed analysis of the biogeographical diversity of the species across 10 major areas of occurrence is given, including updated figures for previously published hotspots of chondrichthyan biodiversity, providing the detailed numbers of chondrichthyan species per major area, and revealing centres of distribution for several taxa.

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Raja koreana, a new species of skate (Elasmobranchii, Rajoidei) from Korea

Cited by 5 publications

References 1 publication

Dipturus wuhanlingi, a new species of skates (Elasmobranchii: Rajidae) from China

Dipturus wuhanlingi, a new species of skates (Elasmobranchii: Rajidae) from China

Hongeo, a new skate genus (Chondrichthyes: Rajidae), with redescription of the type species

Annotated checklist of the living sharks, batoids and chimaeras (Chondrichthyes) of the world, with a focus on biogeographical diversity

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