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: colarensis: Named for its type locality, from the proximities of Colares Island, Marajó Bay, close to Colares I., district of Colares, Pará State, Brazil.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋; 深度上下限 6 - ? m (Ref. 56441). 热带
Southwest Atlantic: endemic to Brazil.
西南大西洋: 巴西。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 207 cm TL 雄鱼/尚未辨别雌雄; (Ref. 56441)
简单描述
检索表 | 型态特徵 | 形态测量图
Diagnosis: Disc diamond-shaped (rhomboid). Snout elongated, preorbital distance 35.7-37.7% in DW. Lower lip outline with a dark, well-defined band. Shoulder region to base of tail with a row of small tubercles along the midline of disc, tubercles somewhat randomly distributed. Posterior margin of the pectoral fins uniformly rounded; of the triangular-shaped pelvic fins, almost straight or slightly sinuous, with its tips exceeding posterior margin of disc. Dorsal caudal keel absent in the holotype, vestigial in the 2 paratypes (Ref. 56441).
鉴别: 体盘菱形 (偏菱形). 吻延长, 在 DW 的眶前骨距离 35.7-37.7%。 下唇轮廓具有一个深色的, 很清晰条纹。 对尾部的基底肩部有一列小的小瘤沿着体盘的中线,小瘤略微任意地分布了。 胸鳍的后缘均匀地圆的; 三角形腹鳍, 几乎直或些微弯曲, 藉由超过体盘的后缘的它的顶端。 背部的尾部龙骨脊不存在于 holotype, 退化的在这 2个副模式.(参考文献 56441)
Minimum depth from Ref. 58018.
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
西南大西洋: 巴西。
Santos, H.R.S., U.L. Gomes and P. Charvet-Almeida, 2004. A new species of whiptail stingray of the genus Dasyatis Rafinesque, 1810 from the Southwestern Atlantic ocean (Chondrichthyes: Myliobatiformes: Dasyatidae). Zootaxa 492:1-12. (Ref. 56441)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
人类利用
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特别资料
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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=0.01023 (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
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
