Elasmobranchii (sharks and rays) > Myliobatiformes
(Stingrays) > Dasyatidae
(Stingrays) > Urogymninae
Etymology: colarensis: Named for its type locality, from the proximities of Colares Island, Marajó Bay, close to Colares I., district of Colares, Pará State, Brazil.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic; depth range 6 - ? m (Ref. 56441). Tropical
Southwest Atlantic: endemic to Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 207 cm TL male/unsexed; (Ref. 56441)
Morphology | Morphometrics
Diagnosis: Disc diamond-shaped (rhomboid). Snout elongated, preorbital distance 35.7-37.7% in DW. Lower lip outline with a dark, well-defined band. Shoulder region to base of tail with a row of small tubercles along the midline of disc, tubercles somewhat randomly distributed. Posterior margin of the pectoral fins uniformly rounded; of the triangular-shaped pelvic fins, almost straight or slightly sinuous, with its tips exceeding posterior margin of disc. Dorsal caudal keel absent in the holotype, vestigial in the 2 paratypes (Ref. 56441).
Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Santos, H.R.S., U.L. Gomes and P. Charvet-Almeida, 2004. A new species of whiptail stingray of the genus Dasyatis Rafinesque, 1810 from the Southwestern Atlantic ocean (Chondrichthyes: Myliobatiformes: Dasyatidae). Zootaxa 492:1-12. (Ref. 56441)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00359 - 0.01840), b=3.11 (2.90 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.7 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years ().
Vulnerability (Ref. 59153
): High to very high vulnerability (72 of 100) .