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) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 150 - 2117 m (Ref. 5951), usually 250 - ? m (Ref. 117245). 深水域; 4°C - 6°C (Ref. 117245); 78°N - 42°N, 70°W - 30°E (Ref. 114953)
North Atlantic Ocean and adjacent fringes of the Arctic Region. Reported from the western Atlantic on eastern Grand Banks and Flemish Cap (about 46°N), a few records on the slope off Strait of Belle Isle to Davis Strait; probably continuous along the slope off Labrador; restricted in southwestern part of Greenland; eastern Atlantic off to most of Iceland to Faroe Islands, possible occurrence in western Irminger Sea and south to northern Rockall Trough; common in the Norwegian Deep and Skagerrak and northward along the Norwegian coast and shelf; periodic records in the southwestern Barents Sea.
東北大西洋: 冰島而且沿著隆起對法羅, 也挪威的海岸與史卡基拉克海域。 西北大西洋: 格陵蘭西部。
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm ?, range 97 - ? cm
Max length : 125 cm TL 雄鱼/尚未辨别雌雄; (Ref. 119696); 最大体重: 11.2 kg (Ref. 40637)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 0; 臀棘: 0. Snout moderately long, its tip pointed and somewhat protruding; upper surface predominantly smooth, only on head and front margins more or less prickly, tail entirely spinulose, underside smooth; up to 4 thorns in front of as well as behind eye, a continuous median row of 42-51 thorns from nape to first dorsal fin (Ref. 3167). Upper surface plain fawn color, slate grey or clay grey, lower surface white, with a grey longitudinal band along tail and grey blotch on either side of cloaca (Ref. 6902).
吻中等长度的, 它的顶端尖的而且略微伸出; 上表皮非常平滑, 只有在头部与前缘上约略多刺的, 尾部长满刺, 下面平滑的; 超过 4 个刺在眼 , 42-51 的连续中央列从后颈到第一背鳍的刺前面及后面.(参考文献 3167) 上表皮单色的黄褐色色彩, 暗蓝灰色或泥土灰色的, 下表面白色, 具有一个灰色的纵向条纹在泄殖腔的任一侧边上沿着尾部与灰色的斑块.(参考文献 6902)
Occur in moderately deep water but mainly around 250 m in boreal and partly arctic latitudes (Ref. 3167). Maximum reported depth at 2,117 m (Ref. 117245). Benthic (Ref. 58426). Feed on all kinds of bottom animals (Ref. 3167), invertebrates and fishes (Ref. 114953). Males mature at ca. 90 cm TL and young hatch at ca. 15 cm TL (Ref. 119696). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 10.7 cm long and 7.7 cm wide (Ref. 41251, 41301). It is not commercially important, and is possibly taken at low level by-catch in deep-water longline and trawl fisheries (Ref. 117245).
一般出现在深水域但是主要地北方生物带与部分北极的纬度的大约 250 公尺.(参考文献 3167) 捕食各种的底部动物。 (参考文献 3167) 卵生的。 明显的成对出现。 幼鱼可能倾向跟随大的个体, 例如他们的母亲.(参考文献 205) 卵为长方形鞘囊具有僵硬的触角沈积在沙滩或泥滩的角落.(参考文献 205) 卵鞘是 10.7 公分长与 7.7 公分宽的.(参考文献 41251,41301)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).東北大西洋: 冰島而且沿著隆起對法羅, 也挪威的海岸與史卡基拉克海域。 西北大西洋: 格陵蘭西部。
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
人类利用
渔业: 商业性; 游钓鱼种: 是的
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Estimates based on models
Preferred temperature (Ref.
123201): 1 - 8, mean 5.2 °C (based on 216 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.8 ±0.45 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): High to very high vulnerability (75 of 100).
Climate Vulnerability (Ref.
125649): Moderate to high vulnerability (54 of 100).
Nutrients (Ref.
124155): Calcium = 3.33 [0.48, 63.71] mg/100g; Iron = 0.27 [0.03, 3.63] mg/100g; Protein = 15.3 [13.3, 17.4] %; Omega3 = 0.449 [0.186, 1.105] g/100g; Selenium = 21.2 [3.8, 98.1] μg/100g; VitaminA = 3.65 [0.27, 47.82] μg/100g; Zinc = 0.24 [0.02, 2.78] mg/100g (wet weight);
