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Myliobatiformes (Stingrays) >
Potamotrygonidae (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
Ekologi
; air tawar bentopelagis; pH range: 6.0 - 6.8. Tropical; 20°C - 25°C (Ref. 13614)
South America: Xingu River basin (Xingu and Fresco rivers).
Length at first maturity / Size / Weight / umur
Maturity: Lm 35.0, range 30 - 40 cm
Max length : 111 cm WD jantan/; (Ref. 111518); Berat maksimum terpublikasi: 17.0 kg (Ref. 111518)
Buried in sand during day, hunting for benthic invertebrates during night (Ref. 13614).
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)
Status IUCN Red List (Ref. 130435)
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: komersial; Akuarium: Akuarium publik
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
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).
Trophic level (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.
Daya lenting (Ref.
120179): Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (tm=3-4; Fec=2 (in captivity)).
Fishing Vulnerability (Ref.
59153): High vulnerability (58 of 100).