أشلاق (القروش و الشفانين) (sharks and rays) >
Orectolobiformes (Carpet sharks) >
Orectolobidae (Carpet or nurse sharks)
Etymology: Orectolobus: orektos (Gr.), stretched out; lobus (L.), from lobos (Gr.), rounded projection or protuberance, referring to long nasal barbels of Squalus barbatus (=O. maculatus). (See ETYFish); japonicus: -icus (L.), belonging to: Japan, described from two specimens, both from Japan. (See ETYFish).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري القاع; نطاق العمق 0 - 200 m (Ref. 106604). Tropical; 43°N - 6°N, 103°E - 140°E
Western Pacific: Japan and Korea to Viet Nam.
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm ?, range 103 - ? cm
Max length : 118 cm TL ذكر/ مختلط الجنس; (Ref. 106604)
الأشواك الظهرية (المجموع) : 0; شوكة شرجية: 0. Five to six dermal flaps below and in front of eyes; back with light areas between dark saddles marked with broad reticulated dark lines (Ref. 13577). Caudal fin with its upper lobe hardly elevated above the body axis, with a strong terminal lobe and subterminal notch but no ventral lobe (Ref. 13577).
A little-known bottom shark found inshore (Ref. 247); usually in sand or sandy mud bottoms (Ref. 11230); also on rocky and coral reefs (Ref. 43278). Nocturnal in habits (Ref. 247). Feeds on fish and presumably bottom invertebrates (Ref. 247), including lizardfishes, cutlassfish, horse mackerel and other jacks, goatfishes, groupers, tilefishes, sea robins, whiting, parrotfishes, sea bream, croakers, also skates, shark egg cases, cephalopods, and shrimp (Ref. 43278). Ovoviviparous (Ref. 43278, 50449), with up to 20 young in a litter (Ref. 247). Wobbegongs should be regarded as potentially dangerous because of its formidable dentition (Ref. 247, 13577). Used for human consumption (Ref. 247). Kept in aquaria in Japan and the United States (Ref. 43278).
Life cycle and mating behavior
Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). With up to 20 young in a litter (Ref. 247).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN Red List Status (Ref. 130435)
استخدامات بشرية
مصائد: غير مهمة تجارياً
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 14.5 - 27.7, mean 24 °C (based on 222 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5012 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.8 ±0.57 se; based on food items.
المرونه (Ref.
120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Fec=20).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (71 of 100).
