分类 / 名称
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) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Urogymninae
Eponymy: These are not eponyms but relate to the meanings of ‘margarita’; pearl and daisy. The dragonfish was so-named due to having a “pearl-colored spot above the maxilla”. (Ref. 128868), visit book page.
More on author: Günther.
Taxonomic Remarks
Distribution will be corrected.
环境：氛围 / 气候带 / 深度上下限 / 分布范围
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
成熟度: 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).
Body shape (shape guide): other; Cross section: flattened.
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)
生命周期和交配行为
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
易受伤害 (VU) (A2d); Date assessed: 04 August 2020
人类利用
渔业: 商业性
工具
特别资料
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网络资源
基于模型的估算
首选温度 (参考文献
123201): 23 - 28, mean 26.5 °C (based on 76 cells).
系统发育多样性指数 (参考文献
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00482 - 0.02174), b=3.06 (2.86 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (参考文献
69278): 3.4 ±0.50 se; based on food items.
回复力 (参考文献
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Assuming fecundity<100).
渔业脆弱性 (Ref.
59153): Very high vulnerability (90 of 100).
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营养素 (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);
