分類 / Names
共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays)
(Stingrays) > Potamotrygonidae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335); tatianae: Named for Tatiana Raso de Moraes Possato, a late student of biology that was an enthusiastic researcher of chondrichthyans, in particular potamotrygonids (Ref. 86911).
Environment: milieu / climate zone / depth range / distribution range
; 新鮮な水 底生の. Tropical; 12°S - 13°S, 71°W - 72°W
South America: Peru.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 36.2 cm WD オス/雌雄の選別がない; (Ref. 94972)
形態学 | 形態計測学
This species is distinguished from its congeners by the following set of characters: dorsal disc with dark background, with a beige or light brown, closely packed and highly convoluted vermicular pattern; one row of irregular spines on dorsal tail midline; presence of star-shaped, asymmetrical and minute dermal denticles, rarely with crown dichotomies, and concentrated over central region of disc. It is further distinguished from P. motoro (Müller & Henle, 1841) by lacking on disc ocelli formed by strong black concentric rings, a more flattened aspect of its disc; with much smaller dermal denticles, and considerably smaller eyes; from P. orbignyi (Castelnau, 1855) by lacking a dorsal reticulate pattern, presence of two angular cartilages, and lower number of total pectoral radials (modal values 97 vs. 90, respectively); from P. falkneri by having tail spines in one irregular row (instead of in 1-3 irregular rows), lower total pectoral radial count (90-93 vs. 94-100, respectively), having a proportionally much longer tail (mean values 109% vs. 93.5% of DW, respectively), by its teeth with no prominent cusps in adult males (males usually with prominent cusps in P. falkneri), and having spots on dorsal disc that are exclusively vermicular, not occurring as independent spots (many specimens with individual spots on background, these mostly circular, reniform, or oval, with diameter equal to or smaller than eye in P. falkneri) (Ref. 86911).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Da Silva, J.P.C.B. and M.R. Da Carvalho, 2011. A new species of neotropical freshwater stingray of the genus Potamotrygon Garman, 1877 from the Río Madre de Díos, Peru (Chondrichthyes: Potamotrygonidae). Papéis Avulsos de Zoologia (São Paulo) 51(8):139-154. (Ref. 86911)
CITES (Ref. 118484)
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [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
栄養段階 (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
弱み (Ref. 59153
): Very high vulnerability (89 of 100) .