分類 / Names
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
Etymology:
Issue
Distribution will be corrected.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水; 半鹹淡水 居於水底的. 熱帶
Africa: rivers and lakes in western Africa (Ref. 81259, 81625).
非洲: 奈及利亞，加彭與剛果。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 120 cm WD 雄魚/尚未辨別雌雄; (Ref. 81259)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
脊椎骨: 108 - 122. Diagnosis: Dasyatis ukpam is a very large and thick-bodied freshwater dasyatid (Ref. 26277). Entire dorsal surface of disc covered with stout-spined denticles, smooth in newborn (Ref. 26277). Sting greatly reduced in size or absent (Ref. 26277).
一個非常大而身體粗的淡水土魟。 體盤橢圓形, 非常厚又中間的葉基底窄的與短, 它的前緣明顯地凸出; 體盤的整個背部表面覆蓋著有矮刺的細齒了;(平滑的在新生小魚中) 刺非常縮小或不存在; 總計胸的動脈 142-148 。 (參考文獻 26277) 總齒列 38-40/38-48.(參考文獻 7397) 體盤與腹鰭深褐色或灰色的-上方褐色的, 沒有斑點或者突出的斑紋, 腹面白色的除了寬的黑邊; 尾部黑色的除了它的基底的下面.(參考文獻 26277)
Benthic species mostly in lakes and rives, found more than 240 km upstream from the sea (possibly also coastal). The life history and present status of populations in West Africa is unknown. Type specimens were born after capture of the mother; few specimens exist (Ref. 114953). Ovoviviparous (Ref. 50449).
在非洲西方部的河川與湖泊中。 卵胎生的.(參考文獻 50449)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 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).非洲: 奈及利亞，加彭與剛果。
Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)
IUCN 瀕危狀態 (Ref. 130435)
極危 (CR) (A2cd); Date assessed: 04 August 2020
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Estimates based on models
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).
營養階層 (Ref.
69278): 3.7 ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (Assuming Fec<10).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 31.2 [7.6, 142.6] mg/100g; Iron = 0.748 [0.186, 1.957] mg/100g; Protein = 21.9 [19.1, 25.0] %; Omega3 = 0.173 [0.049, 0.510] g/100g; Selenium = 45 [12, 123] μg/100g; VitaminA = 11.6 [5.2, 25.7] μg/100g; Zinc = 1.02 [0.50, 1.85] mg/100g (wet weight);
