Common names from other countries
Lớp phụ Cá sụn (cá mập và cá đuối) (sharks and rays) >
Echinorhiniformes (Bramble sharks) >
Echinorhinidae (Bramble sharks)
Etymology: Echinorhinus: echinos (Gr.), spiny or sea urchin, referring to thorn-like denticles (brambles) on body; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, alluding to a shark’s jagged, rasp-like skin. (See ETYFish); cookei: In honor of the “distinguished conchologist” Charles Montague Cook, Jr. (1874-1948), Bishop Museum (Honolulu), for his “helpful assistance” with Pietschmann’s work (per Pietschmann 1930). (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển Sống nổi và đáy; Mức độ sâu 11 - 1100 m (Ref. 26346), usually 70 - ? m (Ref. 6871). Subtropical; 47°N - 55°S, 119°E - 68°W (Ref. 54428)
Western Pacific: Japan (Ref. 6871), Taiwan, Palau, Australia (Ref. 6871) and New Zealand. Eastern Pacific: Hawaii, USA, Gulf of California, and from Costa Rica to Peru and Chile (Ref. 13564). Also reported in Nicaragua (Ref. 13613).
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm 275.0, range 250 - 300 cm
Max length : 400 cm TL con đực/không giới tính; (Ref. 247)
Các tia vây lưng cứng (tổng cộng) : 0; Tia cứng vây hậu môn: 0; Động vật có xương sống: 89. The prickly shark Echinorhinus cookei has thorn-like denticles on body which are moderately large (single denticles up to about 4mm in basal diameter in adults), numerous, regularly distributed, with scalloped basal margins, and never fused into compound plates. Grayish brown in color, with black distal fin margins; white around mouth and on ventral surface of snout. Tooth count 21-23/20-22. Total vertebrae 89; precaudal 59. As with the other member of the family Echinorhinidae, it has a relatively short snout and stout body; two small spineless dorsal fins, close together, towards posterior part of body and originating behind pelvic fin origin. No anal fin and subterminal notch on caudal fin. Small spiracles, very short labial furrows and teeth on both jaws alike, with a central oblique bladelike cusps with up to 3 cusplets on each side (absent in juveniles) (Ref. 247, 6871).
A large, sluggish shark occurring on continental and insular shelves and upper slopes (Ref. 247). Feeds on a variety of fishes, other sharks, octopi and squids (Ref. 13564). Ovoviviparous (Ref. 205), with up to 114 in a litter (Ref. 26346).
Presumably ovoviviparous (Ref. 6871) with up to 114 in a litter (Ref. 26346).Distinct pairing with embrace (Ref. 205). Size at birth 40-45 cm. Some males mature by 198 cm; females mature between 250 and 300 cm (Ref. 6871).
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)
CITES (Ref. 128078)
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
115969): 3.8 - 19.5, mean 12.1 (based on 522 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00139 - 0.00949), b=3.13 (2.90 - 3.36), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 4.4 ±0.76 se; based on food items.
Thích nghi nhanh (Ref.
120179): thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
