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: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
More on author: Günther.
Issue
One of the largest species, reaching 30 kg in weight. Reproductive biology relatively unknown. References: Castex (1966), Castello (1975), Compagno & Cook (1995), Britski et al. (1999).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 溫帶
South America: Paraná-Paraguay (including Cuiabá river in Brazil), Uruguay basins and Argentina (Ref. 58839). Formerly classified as data deficient in the 2000 IUCN red list of threatened species (Ref. 36508).
南美洲: Parana-巴拉圭 (在巴西的包括 Cuiaba 河) ，烏拉圭流域與阿根廷.(參考文獻 58839) 從前在這 2000 IUCN 受威脅種的紅色目錄中分類如生物資料不足。 (參考文獻 36508)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 95.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 36687); 最大體重: 208.0 kg (Ref. 72380)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
南美洲: Parana-巴拉圭 (在巴西的包括 Cuiaba 河) ，烏拉圭流域與阿根廷.(參考文獻 58839) 從前在這 2000 IUCN 受威脅種的紅色目錄中分類如生物資料不足。 (參考文獻 36508)
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)
人類使用
漁業: 自給性漁業
工具
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網路資源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (Assuming Fec<10).
Fishing Vulnerability (Ref.
59153): High vulnerability (58 of 100).
