分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (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
生態學
海洋 深海底的; 深度上下限 180 - 2734 m (Ref. 106604). 深水域; 47°N - 43°S
Eastern Atlantic and the 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 / 年齡
Maturity: Lm 108.0, range 82 - 134 cm
Max length : 143 cm TL 雄魚/尚未辨別雌雄; (Ref. 26346); common length : 100.0 cm TL 雄魚/尚未辨別雌雄; (Ref. )
背棘 (總數) : 0; 臀棘: 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).
灰色或褐色顏色.(參考文獻 26346) 短,圓的吻; 大小相同的背鰭, 第一背鰭超過腹鰭的背面更靠近胸鰭; 長的腹尾葉; 在尾鰭基底上的短龍骨脊.(參考文獻 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).
一個稀有的種 (參考文獻 26346) 發現於大陸棚外緣與上層斜坡了。 (參考文獻 247) 可能吃深水的底層魚類與無脊椎動物。 (參考文獻 247) 卵胎生的 (參考文獻 205), 長度出生時 21-28 公分TL.(參考文獻 26346) 用來作魚粉了與可能地作為食用魚.(參考文獻 247)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 21 November 2019
人類使用
漁業: 低經濟
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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=0.00380 (0.00164 - 0.00880), b=3.14 (2.95 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.2 ±0.4 se; based on diet studies.
回復力 (Ref.
120179): 低的, 最小族群倍增時間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);
