Dasyatis thetidis  Ogilby, 1899

Thorntail stingray
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Dasyatis thetidis   AquaMaps   Data sources: GBIF OBIS
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Image of Dasyatis thetidis (Thorntail stingray)
Dasyatis thetidis
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Dasyatinae
Etymology: Dasyatis: Greek, dasys = rough, dense (Ref. 45335).   More on author: Ogilby.

Issue
This species is a synonym of Bathytoshia lata (Garman, 1880) according to Last et al., 2016 (Ref. 114953). The species page will be removed.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 0 - 440 m (Ref. 26346).   Subtropical; 10°S - 50°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific: Mozambique, South Africa, Reunion (Ref. 33390), southern Australia, and New Zealand.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 400 cm TL male/unsexed; (Ref. 5578); max. published weight: 214.0 kg (Ref. 3263)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0. A huge, plain, dark stingray with a broadly angular snout and pectoral disc; tail thick-based and tapering to a slender whip, much longer than body, and with no upper caudal finfold but with a long lower one end far in front of tail tip; upper disc and tail of large juveniles and adults roughened by large flat thorns (absent in small individuals); 1 or 2 stings on tail (Ref. 5578). Dark olive green, grey or black dorsally, white ventrally without markings (Ref. 26346).

Biology     Glossary (e.g. epibenthic)

Common inshore (Ref. 6871) but reported to 440 m depth (Ref. 26346). Found in estuaries, lagoons, and around reefs (Ref. 12951). Reported to enter freshwater in Australia (Ref. 12951). Found on soft bottoms (Ref. 5578). Feeds on crabs, mantis shrimps, bivalves, polychaetes and conger eels (Ref. 5578). Ovoviviparous (Ref. 50449).

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 specialised structures (Ref. 50449). With young free swimming by 35 cm WD (Ref. 6871). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)

IUCN Red List Status (Ref. 115185)

  Not Evaluated 

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Traumatogenic (Ref. 6871)




Human uses

Fisheries: minor commercial; gamefish: yes
FAO(Publication : search) | FishSource |

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Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 13.7 - 25.3, mean 17.1 (based on 295 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5002   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  3.5   ±0.53 se; Based on food items.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years ().
Vulnerability (Ref. 59153):  Very high vulnerability (83 of 100) .
Price category (Ref. 80766):   Low.