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).
Issue
Known from three specimens in collections, this species may be endangered because of high endemism (Rosa & Menezes, 1996). Reproductive biology unknown. Additional references: Walschaerts (1987), Compagno & Cook (1995).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性; pH range: 6.0 - 6.8. 熱帶; 20°C - 25°C (Ref. 13614)
South America: Xingu River basin (Xingu and Fresco rivers).
南美洲: Xingu 河流域 (Xingu 與壁畫河).
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 35.0, range 30 - 40 cm
Max length : 111 cm WD 雄魚/尚未辨別雌雄; (Ref. 111518); 最大體重: 17.0 kg (Ref. 111518)
Buried in sand during day, hunting for benthic invertebrates during night (Ref. 13614).
埋藏在沙中在白天, 獵食在夜晚期間為底棲的無脊椎動物.(參考文獻 13614)
南美洲: Xingu 河流域 (Xingu 與壁畫河).
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: 商業性; 水族館: 公眾的水族館
工具
特別的報告
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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
Generation time: 10.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (tm=3-4; Fec=2 (in captivity)).
Fishing Vulnerability (Ref.
59153): High vulnerability (58 of 100).
