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इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).

पर्यावरण / जलवायु / सीमा पारिस्थितिकी

; समुद्री ड़िमरसल; गहराई सीमा 70 - 676 m (Ref. 56504). Temperate, preferred 6°C (Ref. 107945); 60°N - 37°N, 25°W - 36°E

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Eastern Atlantic: Iceland (Ref. 12462), southern Norway, Skagerrak and Morocco, including western Mediterranean. Records as far south to Mauritania and Senegal could not be verified due to lacking descriptions and specimens; most are probably misidentifications of Leucoraja leucosticta.

आकार / वज़न / Age

Maturity: L_m ? range ? - ? cm
Max length : 120 cm TL पुल्लिंग / अलिंग; (Ref. 4426); 117.0 cm TL (female); common length : 70.0 cm TL पुल्लिंग / अलिंग; (Ref. 4426)

Short description आकृति विज्ञान | मौरफोमैटरिक्स

पृष्ठीय रीढ़ (सम्पूर्ण): 0; गुदा कांटा 0; ऐनल सौफट रेज़: 0. Snout short, its tip somewhat pronounced; upper surface entirely spinulose, about 8 thorns generally in a complete row around inner margin of eye and a triangle of thorns on nape or shoulder region; underside with prickles only on snout, between gill-slits, along abdomen, and at anterior margins of disc; tail only slightly longer than body; upper surface reddish-brown to dark brown with 4-6 creamy spots on each wing, underside white (Ref. 3167).

Found in offshore shelf waters and on upper slope, mainly around the 100 m line (Ref. 3167). Depth range from 70-275 m (Ref. 03167), and from 463-676 m in eastern Ionian Sea (Ref. 56504). Feed on all kinds of bottom animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 8.3-9.2 cm long and 4.6-5.3 cm wide (Ref. 41303, 41251, 41311). Maximum length for female is 117 cm (Ref. 41333).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). With no definite egg laying period (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

Main reference Upload your references | संदर्भ | संयोजक : McEachran, John | सहयोगीयो

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

IUCN Red List Status (Ref. 115185)

Endangered (EN) (A2bcd)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

मात्स्यिकी: लघु वाणिज्य

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इंटरनेट स्रोत

Leucoraja circularis (Couch, 1838)