Lớp phụ Cá sụn (cá mập và cá đuối) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Centrophoridae (Gulper sharks)
Etymology: Centrophorus: centr[um] (L.), prickle or sharp point; phorus, from phoreus (Gr.), bearer or carrier, referring to grooved spines on dorsal fins (See ETYFish); granulosus: granum (L.), seed or grain; -osus, Latin suffix connoting fullness, referring to its granular brown skin (See ETYFish).
More on authors: Bloch & Schneider.
Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
biển tầng đáy biển sâu; mức độ sâu 98 - 1700 m (Ref. 94782), usually 200 - 600 m (Ref. 247). Deep-water; 58°N - 43°S, 98°W - 156°E
Circumglobal: all ocean basins except in the Eastern Pacific and in the Mediterranean.
Chiều dài lúc trưởng thành đầu tiên / Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm ?  range ? - ? cm
Max length : 124 cm TL con đực/không giới tính; (Ref. 94782); 165.0 cm TL (female)
Động vật có xương sống: 106 - 115. This species is distinguished by the following characters: large (>1.5 m maximum total length); body moderately robust; head moderately long (20.6-24.9% TL, 3.9-4.9 times in total length) and very robust; snout relatively short, horizontal preorbital length 4.8-8.1% TL, moderately rounded in dorsal view; first dorsal fin low and long, its height 4.4-6.5% TL, its soft length 11.0-16.6% TL), inner margin very long which is more than length from insertion of exposed spine to fin insertion; second dorsal fin large, similar in heigfree rear tip varying from slightly elongate in small individuals with free rear tip extension 0.9-2.2% TL in individuals < 70.0 cm TL, to moderately elongate in adults, 1.9-4.1% TL; lateral trunk denticles elevated on low, broad pedicel with strongly tricuspidate crowns in juveniles < 70.0 cm TL; denticles of large individuals low, not on pedicels, crown tear-drop shaped with one long posterior cusp; upper teeth of juveniles < 50.0 cm TL are strongly oblique; upper teeth of individuals > 70.0 cm TL with erect to slightly oblique cusps; lower teeth of all sizes are much larger than upper teeth, strongly oblique, blade-like; total vertebral centra 106-115; teeth 30-37/27-32; body uniformly brownish (sometimes greyish to greyish brown), slightly paler ventrally (Ref. 94782).
Cross section: oval.
A common deepwater dogfish of the outer continental shelves and upper slopes, commonest below 200 m (Ref. 247); usually benthic and epibenthic at depths from 50-1440 m with most records from 200-600 m (Compagno, pers. comm. 07/07). Solitary (Ref. 26340). Adults feed mainly on bony fishes such as hake, epigonids, lanternfish, herring, smelts, cods, rattails, squid and crustaceans (Ref. 247, IUCN workshop 07/07). Males mature at about 105-118 cm TL (Ref. 94782). Ovoviviparous (Ref. 50449). This species is fished in Eastern Atlantic by bottom trawls, long lines, fixed bottom nets, hook and line and pelagic trawls; caught and discarded, or utilised from by-catch fisheries (IUCN discussion 07/07). Marketed smoked and dried salted for human consumption; also processed into fishmeal and a source of liver oil for squalene (Ref. 247).
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Young are born from 30 to 42 cm or more (Ref. 247). Distinct pairing with embrace (Ref. 205).
White, W.T., D.A. Ebert, G.J.P. Naylor, H.-H. Ho, P. Clerkin, A. Veríssimo and C.F. Cotton, 2013. Revision of the genus Centrophorus (Squaliformes: Centrophoridae): Part 1 -Redescription of Centrophorus granulosus (Bloch & Schneider), a senior synonym of C. acus and C. niaukang Teng. Zootaxa 3752(1):035-072. (Ref. 94782)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Harmless
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Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo 82804) |
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00204 (0.00163 - 0.00256), b=3.21 (3.14 - 3.28), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Mức dinh dưỡng (Tài liệu tham khảo 69278) |
4.1 ±0.4 se; based on diet studies. |
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Generation time |
11.4 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Thích nghi nhanh (Tài liệu tham khảo 120179) |
thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (Fec assumed to be <100). |
Sự dễ bị tổn thương của nghề đánh cá (Ref. 59153) |
High to very high vulnerability (70 of 100). 🛈 |
Sự dễ bị tổn thương của khí hậu (Ref. 125649) |
Moderate vulnerability (43 of 100). 🛈 |
Loại giá (Ref. 80766) |
High.
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Chất dinh dưỡng (Ref. 124155) |
Calcium = 5.65 [1.11, 28.95] mg/100g; Iron = 0.304 [0.071, 0.977] mg/100g; Protein = 19.9 [17.6, 22.1] %; Omega3 = 0.279 [0.102, 0.876] g/100g; Selenium = 19.5 [6.0, 56.9] μg/100g; VitaminA = 8.25 [1.82, 38.80] μg/100g; Zinc = 0.248 [0.118, 0.466] mg/100g (wet weight); |