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: Somniosus: Latin for sleepy, reflecting Lesueur’s surmise that these sharks are slow or sluggish because of their relatively small fins (hence the name sleeper sharks). (See ETYFish); rostratus: Latin for beaked, referring to its elongated rostrum. (See ETYFish).
More on author: Risso.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 200 - 1330 m (Ref. 104125). 深水域; 47°N - 43°S
Northeast Atlantic: Madeira, France, and western Mediterranean.
東北大西洋: 馬得拉群島，法國與地中海西部。 西太平洋: 外海的紐西蘭 (參考文獻 6871) 與日本。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 108.0, range 82 - 134 cm
Max length : 143 cm TL 雄鱼/尚未辨别雌雄; (Ref. 26346); common length : 100.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. )
背棘 (总数): 0; 臀棘 0; 臀鳍软条: 0. Diagnosis: Somniosus rostratus is distinguished from S. longus in having overall length of second dorsal shorter than first dorsal fin 76-88% (vs. almost equal 91-100%); horizontal diameter of eye less than 37% (mean 33%) of length from snout tip to eye (vs. >37, mean 46%); number of tooth rows in upper jaw 53 (vs. 56-57); and spiral valve counts 23 (vs. 26-27) (Ref. 50224).
灰色或褐色颜色.(参考文献 26346) 短,圆的吻; 大小相同的背鳍, 第一背鳍超过腹鳍的背面更靠近胸鳍; 长的腹尾叶; 在尾鳍基底上的短龙骨脊.(参考文献 247)
A rare species (Ref. 26346) found on outer continental shelves and upper slopes (Ref. 247). Probably feeds on deepwater bottom fishes and invertebrates (Ref. 247). Ovoviviparous (Ref. 205), length at birth 21-28 cm TL (Ref. 26346). Utilized as fishmeal and possibly as food fish (Ref. 247).
一个稀有的种 (参考文献 26346) 发现于大陆棚外缘与上层斜坡了。 (参考文献 247) 可能吃深水的底层鱼类与无脊椎动物。 (参考文献 247) 卵胎生的 (参考文献 205), 长度出生时 21-28 公分TL.(参考文献 26346) 用来作鱼粉了与可能地作为食用鱼.(参考文献 247)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ovoviviparous (Ref. 247). Young born at 21-28 cm (Ref. 26346). Distinct pairing with embrace (Ref. 205).東北大西洋: 馬得拉群島，法國與地中海西部。 西太平洋: 外海的紐西蘭 (參考文獻 6871) 與日本。
Yano, K., J.D. Stevens and L.J.V. Compagno, 2004. A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae). Ichthyol. Res. 51:360-373. (Ref. 50224)
人类利用
渔业: 低经济
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Estimates based on models
Preferred temperature (Ref.
123201): 8.6 - 14.2, mean 13.2 °C (based on 122 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00168 - 0.00901), b=3.13 (2.94 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.2 ±0.4 se; based on diet studies.
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 (86 of 100).
Climate Vulnerability (Ref.
125649): Moderate vulnerability (39 of 100).
Nutrients (Ref.
124155): Calcium = 5.4 [1.0, 29.5] mg/100g; Iron = 0.286 [0.068, 0.948] mg/100g; Protein = 19.4 [17.1, 21.6] %; Omega3 = 0.269 [0.098, 0.861] g/100g; Selenium = 18.7 [5.6, 56.5] μg/100g; VitaminA = 11.3 [2.3, 57.4] μg/100g; Zinc = 0.292 [0.137, 0.565] mg/100g (wet weight);
