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) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海区的; 深度上下限 111 - 2949 m (Ref. 117245), usually 165 - 255 m (Ref. 7251). 深水域; 2°C - 8°C (Ref. 117245); 80°N - 42°N, 80°W - 50°E
North Atlantic and adjacent Arctic.
西大西洋: 戴維斯海峽的格陵蘭側邊與加拿大紐芬蘭到喬治亞淺灘外的東岸外海。 東大西洋: 巴倫支海，挪威, 冰島-法羅-雪特蘭高地與格陵蘭東部.(參考文獻 3167)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 170 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3167)
简单描述
型态特徵 | 形态测量图
Disk without spines, except near edge of pectoral fins in males. Ventral mucous pores not blackish. Tail with middorsal row of large spines. Snout pointed (Ref. 7251). Upper surface pale brown or bluish gray without dark markings. Lower surface white with small sooty blotches irregularly distributed around margins of pectorals, pelvic fins white below. Lower surface of tail white but pale brown rearward (Ref. 6902).
在雄性中的除了近的胸鳍边缘以外,圆盘没有棘。 不黑色的腹面黏液孔。 尾部有大棘的背面中央列。 吻端尖的.(参考文献 7251) 上表皮白褐色或蓝灰色的没有深色的斑纹。 下表面白色的有不规则地胸鳍的边缘的周围被分布的小的乌黑斑块，腹鳍腹面白色的。 尾部的下表面白色但是白褐色后方.(参考文献 6902)
An inhabitant of deep, cold water (Ref. 7251). Benthic (Ref. 58426). Feed on all kinds of bottom animals (Ref. 3167). Oviparous (Ref. 50449). 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 13.4-16.5 cm long and 8.0-10.2 cm wide (Ref. 41251, 41301). This species is part of the regular by-catch of deep-sea fisheries (Ref. 117245).
一个深又寒冷水的栖居动物.(参考文献 7251) 捕食各种的底部动物。 (参考文献 3167) 卵生的.(参考文献 50449) 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 13.4-16.5 公分长与 8.0-10.2 公分宽的.(参考文献 41251,41301)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 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).西大西洋: 戴維斯海峽的格陵蘭側邊與加拿大紐芬蘭到喬治亞淺灘外的東岸外海。 東大西洋: 巴倫支海，挪威, 冰島-法羅-雪特蘭高地與格陵蘭東部.(參考文獻 3167)
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)
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Estimates based on models
Preferred temperature (Ref.
123201): 0.3 - 7.6, mean 2.5 °C (based on 411 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 4.4 ±0.6 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 (90 of 100).
