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 400 - 1640 m (Ref. 106604). 深水域; 15°N - 34°S
Eastern Atlantic: off southern Rio de Oro in Western Sahara, Namibia, and South Africa. Probably occurs throughout the area along the deeper West African slope.
東大西洋: 外海的西撒哈拉的里奧德奧羅，那米比亞與南非南部。 可能在各處區域沿著較深的西非斜坡。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 82.3 cm TL 雄鱼/尚未辨别雌雄; (Ref. 106604)
简单描述
型态特徵 | 形态测量图
Moderately long snout, small eyes, and a flat disc; tail about as long as body; moderately large, inconspicuous light thorns dorsally and a few on snout; mid-dorsal line of thorns reduced in adolescents and adults (Ref. 5578). Whitish grey to dark grey dorsally, white ventrally with dark rear margins and dark patches on underside of tail (Ref. 5578).
中等长度的吻又小的眼 , 与一个平坦的体盘; 尾部大约与身体一样长; 普通大的, 不明显的淡刺背面与一些在吻上; 背部中央的刺列在亚成鱼与成鱼中缩小的了。 (参考文献 5578) 白灰色到深灰色的背面, 腹侧白色的有深色的后缘与尾巴下深色的小斑块.(参考文献 5578)
Found in deeper slope waters (Ref. 4426). Feed on cephalopods, mysids and small bony fishes (Ref. 5578). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
发现于较深的斜坡水域了。 (参考文献 4426) 捕食头足类动物，糠虾与小的硬骨鱼类。 (参考文献 5578) 卵生的.(参考文献 50449) 卵在贝壳上有像触角一样的突出。 (参考文献 205)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).東大西洋: 外海的西撒哈拉的里奧德奧羅，那米比亞與南非南部。 可能在各處區域沿著較深的西非斜坡。
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: 没有兴趣
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Estimates based on models
Preferred temperature (Ref.
123201): 3.3 - 6.6, mean 4.3 °C (based on 24 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00288 (0.00177 - 0.00470), b=3.29 (3.16 - 3.42), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (Ref.
69278): 4.0 ±0.53 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): Moderate to high vulnerability (53 of 100).
