分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Myliobatiformes (Stingrays)
鰩目 (Stingrays) >
Dasyatidae (Stingrays)
土魟科 (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.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋; 半鹹淡水 居於水底的; 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 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 100.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 3170); common length : 60.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 26999); 最大體重: 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.
體盤橢圓形, 一般平坦, 它的中間葉基底寬的與略微伸出的, 它的前外側邊緣略微凹曲; 細齒在體盤背面上平滑的, 侷限於中央的部分; 吻中等長度的, 尖端寬的; 珍珠棘總是呈現與非常大的.(參考文獻 26277) 總齒列 24-32/28-36; 總計胸的動脈 129-136 。 (參考文獻 7367) 體盤與腹鰭灰褐色上方, 沒有斑點或突出的斑紋, 均勻灰白或腹面略白的.(參考文獻 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).
常見於海洋與河口的棲息地。 (參考文獻 3497) 吃蝦，螃蟹，二枚貝與環節動物。 (參考文獻 28587) 卵胎生的.(參考文獻 50449)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
易受傷害 (VU) (A2d); Date assessed: 04 August 2020
人類使用
漁業: 商業性
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基於模型的估計
首選溫度 (參考文獻
123201): 23 - 28, mean 26.5 °C (based on 76 cells).
系統發育多樣性指數 (參考文獻
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).
營養階層 (參考文獻
69278): 3.4 ±0.50 se; based on food items.
回復力 (參考文獻
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Assuming fecundity<100).
釣魚的脆弱性 (Ref.
59153): Very high vulnerability (90 of 100).
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營養素 (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);
