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
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.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 pelagic-neritic; 深度上下限 6 - ? m (Ref. 56441).
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Southwest Atlantic: endemic to Brazil.
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 207 cm TL 雄魚/尚未辨別雌雄; (Ref. 56441)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
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).
Body shape (shape guide): other.
Minimum depth from Ref. 58018.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
極危 (CR) (A2d); Date assessed: 01 July 2019
人類使用
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特別的報告
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網路資源
基於模型的估計
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): 3.7 ±0.3 se; based on size and trophs of closest relatives
釣魚的脆弱性 (Ref.
59153): Very high vulnerability (90 of 100).
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