इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) >
Myliobatiformes (Stingrays) >
Urotrygonidae (American round stingrays)
Etymology: Urotrygon: Greek, oura = tail + Greek, trygon = a sting ray (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
समुद्री ड़िमरसल; गहराई सीमा 9 - 55 m (Ref. 58018). Tropical
Western Atlantic: Venezuela and the mouth of the Amazon.
Length at first maturity / आकार / वज़न / Age
Maturity: Lm 19.9, range 17 - ? cm
Max length : 11.8 cm WD पुल्लिंग / अलिंग; (Ref. 13608)
Long and pointed snout. Disc angular in front and naked. Tail longer, pectorals are angular and caudal fin narrower. Upper surface gray and lower surface whitish (Ref. 6902).
Life cycle and mating behavior
Maturities | पुनरुत्पत्ति | Spawnings | Egg(s) | Fecundities | लार्वा
Uyeno, T., K. Matsuura and E. Fujii (eds.), 1983. Fishes trawled off Suriname and French Guiana. Japan Marine Fishery Resource Research Center, Tokyo, Japan. 519 p. (Ref. 13608)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
साधन
Special reports
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इंटरनेट स्रोत
Estimates based on models
Preferred temperature (Ref.
123201): 26.7 - 28.1, mean 27.5 °C (based on 62 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00575 - 0.03468), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.7 ±0.6 se; based on size and trophs of closest relatives
लौटाव (Ref.
120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).