分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Somniosidae (Sleeper sharks)
Etymology: Scymnodon: scymnus, an ancient name for some kind of shark, derived from a Greek word meaning young animal, cub or whelp; odon (Gr.), tooth, referring to large, triangular cutting teeth on lower jaw of S. ringens. (See ETYFish); macracanthus: macro-, from makros (Gr.), long or large; acanthus (L.), from akantha (Gr.), thorn, referring to stout, prominent dorsal-fin spines. (See ETYFish).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 219 - 1550 m (Ref. 6871), usually 550 - 732 m (Ref. 247). 深水域; 50°S - 54°S
Indo-Pacific: southern distribution, discontinuous across Pacific and Indian Oceans.
東南太平洋: 麥哲倫海峽。 西南太平洋: 紐西蘭.(參考文獻 26346)
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 149.5, range 129 - 170 cm
Max length : 131 cm TL 雄鱼/尚未辨别雌雄; (Ref. 247); 170.0 cm TL (female)
背棘 (总数): 2; 臀棘 0; 臀鳍软条: 0. Dark brown or blackish in color, dorsal fins with fairly prominent fin spines, moderately long snout, lanceolate upper teeth and bladelike lower teeth with short, oblique cusps, stocky body that tapers abruptly from pectoral region, and moderately large tricuspidate and tricarinate lateral trunk denticles (Ref. 247).
深褐色或黑色的颜色, 背鳍具有非常突出的鳍棘, 中等长度的吻又矛尖形的上颚齿与刀叶状的下颚齿有短的, 斜的尖头，从胸的区域突然变细的矮胖的身体, 与普通大的三尖与 tricarinate 侧部躯干细齿.(参考文献 247)
A rare species inhabiting lower continental slopes (Ref. 26346), also on insular slopes in large schools near the bottom which are segregated according to size and sex, and feeds on cephalopods and bony fishes (Ref. 247). Up to 36 young in a litter, ths size at birth between 32 and 36 cm (Ref. 247). Used for fishmeal and liver oil (Ref. 6871). Minimum depth from Ref. 247. Ovoviviparous (Ref. 205).
一个稀有的种居住于大陆坡下层.(参考文献 26346) 卵胎生的.(参考文献 205)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ovoviviparous (Ref. 26346). Distinct pairing with embrace (Ref. 205).東南太平洋: 麥哲倫海峽。 西南太平洋: 紐西蘭.(參考文獻 26346)
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)
人类利用
渔业: 没有兴趣
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00221 - 0.00624), b=3.12 (2.98 - 3.26), in cm total length, based on LWR estimates for species & Subfamily-BS (Ref.
93245).
营养阶层 (Ref.
69278): 4.5 ±0.59 se; based on food items.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
