أشلاق (القروش و الشفانين) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Somniosidae (Sleeper sharks)
Etymology: Centroscymnus: centr[um] (L.), prickle or sharp point, referring to spines on both dorsal fins; scymnus, an ancient name for some kind of shark, derived from a Greek word meaning young animal, cub or whelp. (See ETYFish).
More on author: Waite.
Issue
Synonym of Scymnodon macracanthus (Regan, 1906) (Ref. 125657). This page will be removed.
Environment: milieu / climate zone / depth range / distribution range
البيئة
; بحري قاعية المعيشة; نطاق العمق 219 - 1550 m (Ref. 6871), usually 550 - 732 m (Ref. 247). Deep-water; 32°S - 56°S, 136°E - 168°W
Southwest Pacific: New Zealand and southeastern Australia.
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 149.5, range 129 - 170 cm
Max length : 131 cm TL ذكر/ مختلط الجنس; (Ref. 247); 170.0 cm TL (female)
شوكة شرجية 0; أشعه شرجية لينه: 0. Dark grey-brown in color, dorsal fins with very small fin spines, very short snout, lanceolate upper teeth and bladelike lower teeth with short, oblique cusps, stocky body that tapers abruptly from pectoral region, moderately large dermal denticles with triple cusps and ridges in adults and subadults (Ref. 247).
Found on continental and insular slopes (Ref. 247). Occurs in large schools near the bottom which are segregated according to size and sex (Ref. 247). Feeds on cephalopods and bony fishes (Ref. 247). Ovoviviparous (Ref. 205), with up to 36 young in a litter. Size at birth between 32 and 36 cm (Ref. 247). Used for fishmeal and liver oil (Ref. 6871). Minimum depth from Ref. 247.
Ovoviviparous with up to 36 young in a litter. Size at birth between 32 and 36 cm (Ref. 247). Distinct pairing with embrace (Ref. 205).
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. 125652)
استخدامات بشرية
مصائد: فوائد محتملة
مزيد من المعلومات
مراجعالأستزراع المائيملف الأستزراع المائيسلالاتجينيتواتر الأليلالتوريثالأمراضمعالجةNutrientsMass conversion
المتعاونينصورStamps, Coins Misc.اصواتالتسمم باكل السمكسرعةنوع السباحةمنطقة الخياشيمعظمة الأذندماغرؤية
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
115969): 5.1 - 8.8, mean 6.9 °C (based on 105 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00226 - 0.00639), b=3.12 (2.98 - 3.26), in cm total length, based on LWR estimates for species & Subfamily-BS (Ref.
93245).
مستوى غذائي (Ref.
69278): 4.5 ±0.59 se; based on food items.
المرونه (Ref.
120179): منخفض, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 4.5-14 سنة (Fec=36).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100) .
Climate Vulnerability (Ref.
125649): (0 of 100) .
