分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Issue
Distribution will be corrected.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水; 半咸淡水 居于水底的. 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 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 120 cm WD 雄鱼/尚未辨别雌雄; (Ref. 81259)
简单描述
检索表 | 型态特徵 | 形态测量图
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).
一个非常大而身体粗的淡水土 。 体盘椭圆形, 非常厚又中间的叶基底窄的与短, 它的前缘明显地凸出; 体盘的整个背部表面覆盖着有矮刺的细齿了;(平滑的在新生小鱼中) 刺非常缩小或不存在; 总计胸的动脉 142-148 。 (参考文献 26277) 总齿列 38-40/38-48.(参考文献 7397) 体盘与腹鳍深褐色或灰色的-上方褐色的, 没有斑点或者突出的斑纹, 腹面白色的除了宽的黑边; 尾部黑色的除了它的基底的下面.(参考文献 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与湖泊中。 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).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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
极度濒危 (CR) (A2cd); Date assessed: 04 August 2020
人类利用
渔业: 没有兴趣
工具
特别资料
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网络资源
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=0.01023 (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): 3.7 ±0.3 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 非常低的, 最小族群倍增时间超过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);
