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 102 - 1098 m (Ref. 106604). 深水域; 27°S - 40°S
Southeast Atlantic: Lüderitz, Namibia to off Cape Agulhas, South Africa.
東南大西洋: 那米比亞的盧德里茲到南非的艾古哈斯角外海。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 65.1 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
Small skate with a very short, obtusely pointed snout, large, close-set, bulging eyes and a thick disc; tail thick and much longer than body; conspicuous light thorns make disc and tail very rough (Ref. 5578). Light grey to brownish above, with or without darker spots; young with distinctive white-barred pattern; underside white (Ref. 5578).
小的 鱼具有一个非常短的，圆头尖的吻，和大的, 靠拢在一起, 凸出眼与一个厚的体盘; 尾部厚而远长过身体; 显着的淡刺使体盘与尾部非常粗糙。 (参考文献 5578) 浅灰色到上方褐色的, 具有或者没有深色的斑点; 幼鱼有特殊的白色条纹的图案; 腹面白色的.(参考文献 5578)
Found on the upper slope (Ref. 5578). Feed on mysids, lightfishes, and polychaetes (Ref. 5578). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Caught by hake trawlers (Ref. 5578).
栖息于上层斜坡了。 (参考文献 5578) 捕食糠虾，灯眼鱼与多毛类动物。 (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) 被鳕鱼底拖网捕获了。 (参考文献 5578)
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).東南大西洋: 那米比亞的盧德里茲到南非的艾古哈斯角外海。
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
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Estimates based on models
Preferred temperature (Ref.
123201): 6.5 - 13.8, mean 8 °C (based on 11 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00177 - 0.00563), b=3.23 (3.08 - 3.38), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±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 (46 of 100).
