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) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Urogymninae
Etymology: margaritella: Named for the smaller size of this stingray and of its pearl (Latin: margarita) spine, as compared to Dasyatis margarita (Ref. 26277).
Eponymy: Margaritella is the diminutive of Margarita and is used to show this species is smaller than its relative (see Margarita above). The vernacular name is not only used to convey ‘Little Pearl’ but to reflect the fact that this species has a pearl spine. (Ref. 128868), visit book page.
More on authors: Compagno & Roberts.
Issue
Distribution will be corrected.
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 ? - 60 m (Ref. 114953). 熱帶
Eastern Central Atlantic: West African coast from Cape Blanc in Mauritania to Angola (Ref. 7397, 81259, 81625, 114953). Often confused with Dasyatis margarita (Günther, 1870) (Ref. 7397).
中東大西洋: 外海的白鼻角到安哥拉。 時常與 珠粒魟〔Dasyatis margarita〕 (Gunther,1870) 互相混淆。 (參考文獻 7397)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 30.0 cm WD 雄鱼/尚未辨别雌雄; (Ref. 81259); 最大体重: 1.0 kg (Ref. 81259)
脊椎骨: 116 - 128. Diagnosis: Dasyatis margaritella is the smallest dasyatid in West Africa (Ref. 26277). It is most similar to Dasyatis margarita, which is larger and has a larger pearl spine, and more numerous pectoral radials, 133-135 vs. 116-127 in D. margaritella (Ref. 26277). It is also similar to D. garouaensis, which has a much flatter disc and a longer snout (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, 它的前缘凹曲; 体盘的中央三个在体盘或尾部上覆盖着小的心形或圆形的平坦细齿 , 没有大刺了; 吻中等长度的, 尖锐的; 珍珠棘总是呈现与普通大的.(参考文献 26277) 总齿列 28-41/34-50; 总计胸的动脉 113-127 。 (参考文献 7397) 体盘与腹鳍灰褐色上方, 没有斑点或者突出的斑纹, 腹面白色的而且没有边缘的深色条纹.(参考文献 26277)
Dasyatis margaritella is the most common littoral stingray on the West African coast and it enter lagoons, shallow bays and estuaries (Ref. 7397, 81259). Most likely feeds on small invertebrates (Ref. 114953). Ovoviviparous (Ref. 50449).
进入泻湖与河口。 (参考文献 7397) 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).中東大西洋: 外海的白鼻角到安哥拉。 時常與 珠粒魟〔Dasyatis margarita〕 (Gunther,1870) 互相混淆。 (參考文獻 7397)
Séret, B., 2003. Dasyatidae. p. 81-96. In D. Paugy, C. Lévêque and G.G Teugels (eds.) The fresh and brackish water fishes of West Africa Volume 1. Collection Faune et Flore Tropicales 40. Institut de recherche de développement, Paris, France, Muséum national d'histoire naturelle, Paris, France and Musée royal de l'Afrique Central, Tervuren, Belgium, 457p. (Ref. 81259)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
临近濒危 (NT) (A2d); Date assessed: 04 August 2020
人类利用
工具
特别资料
下载 XML
网络资源
Estimates based on models
Preferred temperature (Ref.
123201): 23.7 - 28, mean 26.6 °C (based on 66 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00486 - 0.02155), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.9 ±0.13 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 = 63.4 [13.9, 304.2] mg/100g; Iron = 0.84 [0.21, 2.38] mg/100g; Protein = 21.7 [18.8, 24.8] %; Omega3 = 0.222 [0.061, 0.662] g/100g; Selenium = 27.6 [8.0, 80.2] μg/100g; VitaminA = 34.4 [12.4, 91.8] μg/100g; Zinc = 1.38 [0.67, 2.66] mg/100g (wet weight);
