分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋; 半咸淡水 居于水底的; 深度上下限 1 - 60 m (Ref. 4438). 熱帶; 21°N - 17°S
Eastern Central Atlantic: Senegal to Congo (Ref. 114953).
東大西洋: 茅利塔尼亞到安哥拉。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 100.0 cm WD 雄鱼/尚未辨别雌雄; (Ref. 3170); common length : 60.0 cm WD 雄鱼/尚未辨别雌雄; (Ref. 26999); 最大体重: 20.0 kg (Ref. 81259)
脊椎骨: 130. Diagnosis: A large Dasyatis species most closely related to the much smaller Dasyatis margaritella and to the extremely flat D. garouaensis (Ref. 26277). Pearl spines always present and very large; denticles on dorsal surface of disc smooth, restricted to middle portion (Ref. 26277).
体盘椭圆形, 一般平坦, 它的中间叶基底宽的与略微伸出的, 它的前外侧边缘略微凹曲; 细齿在体盘背面上平滑的, 局限于中央的部分; 吻中等长度的, 尖端宽的; 珍珠棘总是呈现与非常大的.(参考文献 26277) 总齿列 24-32/28-36; 总计胸的动脉 129-136 。 (参考文献 7367) 体盘与腹鳍灰褐色上方, 没有斑点或突出的斑纹, 均匀灰白或腹面略白的.(参考文献 26277)
Dasyatis margarita is a coastal marine species, entering lagoons, shallow bays and estuaries (Ref. 3497, 81259). Feeds on shrimps, crabs, bivalves and annelids (Ref. 28587). Ovoviviparous (Ref. 50449).
常见于海洋与河口的栖息地。 (参考文献 3497) 吃虾，螃蟹，二枚贝与环节动物。 (参考文献 28587) 卵胎生的.(参考文献 50449)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205).東大西洋: 茅利塔尼亞到安哥拉。
Capapé, C. and M. Desoutter, 1990. Dasyatidae. p. 59-63. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4438)
人类利用
渔业: 商业性
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Estimates based on models
Preferred temperature (Ref.
123201): 23 - 28, mean 26.5 °C (based on 76 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00366 - 0.01891), b=3.10 (2.90 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.4 ±0.50 se; based on food items.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 34.7 [8.3, 159.9] mg/100g; Iron = 0.765 [0.192, 2.007] mg/100g; Protein = 21.9 [19.0, 24.9] %; Omega3 = 0.174 [0.049, 0.512] g/100g; Selenium = 41.1 [11.0, 113.3] μg/100g; VitaminA = 13.3 [5.9, 29.3] μg/100g; Zinc = 1.1 [0.5, 2.0] mg/100g (wet weight);
