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) >
Potamotrygonidae (River stingrays)
河魟科 (River stingrays) > Potamotrygoninae
Etymology: Paratrygon: Greek, para in the side of + Greek, trygon = a sting ray (Ref. 45335); parvaspina: Name from Latin 'parvus' meaning small, and 'spina' for spine; referring to the diagnostic reduced caudal sting of this new species; an adjective.
feminine. An adjective..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的.
South America: endemic to the Orinoco basin (n middle portion of the Orinoco River and its main affluents, the Bita and Tomo rivers).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 54.3 cm WD 雄魚/尚未辨別雌雄; (Ref. 125391)
簡短描述
型態特徵 | 形態測量圖
This species is distinguished by the following set of characters: spiracular process extremely short and reduced, slightly more developed in adults, and with few dermal denticles (vs. with large and knob shaped spiracular processes that almost cover the spiracle aperture in aiereba, and with short and straight spiracular process with developed dermal denticles in orinocensis); caudal sting very reduced, with mean of its length 6.2% DW [5.6-7.1% DW] (vs. longer caudal stings in aiereba and orinocensis with means and ranges, respectively, 11.3% DW [3-17.9% DW], and 11.9% DW [6.7-15.3% DW]); tail short, with means of the pre-caudal sting region and the distance between cloaca and tail tip, respectively, 21.1% and 50.4% DW (vs. longer tails in aiereba and orinocensis, with means of the pre-caudal sting region and the distance between cloaca and tail tip, respectively, 23.5% and 87.8% DW in aiereba, and 25.2% and 115.4% DW in orinocensis); anterior disc margin broadly rounded (vs. with well developed and visible concave anterior disc margins, especially the latter in aiereba and orinocensis; spiracles small and quadrangular, with mean length 5.2% DW [4.9-5.8% DW] (vs. larger spiracles with mean length 6% DW [4.4-11.6% DW] in aiereba, and with triangular and slightly smaller spiracles, with mean spiracle length 5.6% DW [4.5-7.9% DW] in orinocensis); rostral projection relatively large (vs. small or minute in aiereba and orinocensis, respectively); preorbital processes more laterally projected, externally exceeding level of nasal capsules (vs. preorbital processes less laterally projected, not exceeding level of nasal capsules in aiereba and orinocensis); lateral stay of synarcual cartilage long, exceeding the lateral level of anterior ventral condyle (vs. short and not exceeding the lateral level of anterior ventral condyle in aiereba and orinocensis); dorsolateral crest of scapular process not pronounced and not exceeding laterally the level of mesocondyle (vs. pronounced dorsolateral crests that laterally exceed the level of mesocondyle in aiereba and orinocensis); propterygium robust (vs. more slender in aiereba and orinocensis); concavity of the internal face of mesopterygium not so pronounced and curved (vs. very pronounced and curved in aiereba and orinocensis); metapterygium robust and highly curved (vs. metapterygium slender and more straight in aiereba and orinocensis) (Ref. 125391).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Loboda, T.S., C.A. Lasso, R. de Souza Rosa and M.R. de Carvalho, 2021. Two new species of freshwater stingrays of the genus Paratrygon (Chondrichthyes: Potamotrygonidae) from the Orinoco basin, with comments on the taxonomy of Paratrygon aiereba. Neotrop. Ichthyol. 19(2). (Ref. 125391)
人類使用
更多資訊
俗名同種異名新陳代謝捕食者生態毒物學繁殖成熟度產卵場產卵群集孕卵數卵卵發育
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (43 of 100).
