Elasmobranchii (sharks and rays) > Myliobatiformes
(Stingrays) > Dasyatidae
Etymology: Dasyatis: Greek, dasys = rough, dense (Ref. 45335).
Environment / Climate / Range
Marine; brackish; demersal; amphidromous (Ref. 51243). Tropical
Length at first maturity / Size / Weight / Age
Maturity: Lm 18.7, range 19 - ? cm
Max length : 29.0 cm WD male/unsexed; (Ref. 9840); common length : 18.0 cm WD male/unsexed; (Ref. 4832)
Indo-West Pacific: India to southern Japan, Myanmar, Malaya, Indonesia, China and Indo-China.
Common in estuaries (Ref. 4832). Feed on bottom-dwelling organisms (Ref.50449)- primarily small crustaceans, but also small fishes (Ref.58048). Ovoviviparous (Ref. 50449). Landed in very large quantities as by-catch in the bottom trawl and trammel fisheries. Utilized for its meat, but of limited value due to its very small size (Ref.58048).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialized structures (Ref. 50449). Distinct pairing with embrace (Ref. 205). Gives birth to litters of 1-4 pups; born at 7-10 cm WD. No reproductive synchronicity (Ref.58048).
Nishida, K. and K. Nakaya, 1988. A new species of the genus Dasyatis (Elasmobranchii: Dasyatididae) from southern Japan and lectotype designation of D. zugei. Jap. J. Ichthyol. 35(2):115-123. (Ref. 35022)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00474 - 0.02910), b=3.03 (2.81 - 3.25), based on LWR estimates for this (Sub)Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.37 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Vulnerability (Ref. 59153
): Very high vulnerability (90 of 100) .