Rays Codexery

Telatrygon acutirostra

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Telatrygon acutirostra

Nishida & Nakaya · via Wikipedia: Telatrygon acutirostra · Public domain

The sharpnose stingray, belonging to the family Dasyatidae and known scientifically as Telatrygon acutirostra, inhabits waters near southern Japan and the East China Sea, though details about its biology remain scarce.[1]

Scientific classification

  1. KingdomAnimalia
  2. PhylumChordata
  3. ClassChondrichthyes
  4. SubclassElasmobranchii
  5. OrderMyliobatiformes
  6. FamilyDasyatidae
  7. GenusTelatrygon
  8. SpeciesTelatrygon acutirostra

Named by K. Nishida & Nakaya, 1988

Close relatives

Other species of Telatrygon with a Codexery entry.

Sources: Wikipedia taxobox: Telatrygon acutirostra (CC BY-SA 4.0) · order, family and genus agree with WoRMS AphiaID 1011795 (CC BY 4.0)

Conservation status

Vulnerable (VU)

  1. LC
  2. NT
  3. VU▲ this species
  4. EN
  5. CR
  6. EW
  7. EX
Population trend
Not held in our sources — see the assessment
Assessment published
2021

Source: IUCN Red List assessment · GBIF copy of the Red List category

How big is it?

Size comparison: Telatrygon acutirostra and a personA 0.72 m long telatrygon acutirostra drawn to scale next to a 1.8 m tall person. Schematic shapes, not a likeness.0.72 m1.8 m

Largest length in the source, 0.72 m, next to a 1.8 m person.

Diagram: drawn by Codexery, schematic shapes to scale (not a likeness). Length: Wikipedia: Telatrygon acutirostra

Biology and range

Telatrygon acutirostra has been recorded at depths between 53 and 142 meters in the East China Sea and off southern Japan.[2] This stingray, like the majority of its relatives, lives on the sea floor (benthic habitat).[2] Small eyes are present, and behind them are spiracles that are larger in size.[3] A whip-like tail, exceeding the disc in length, carries one or two venomous spines on its upper side.[3]

Behind the spine, a faint ridge (dorsal keel) and a low fin fold on the underside (ventral fin fold) can be found.[3] The upper body is a light brown color, while the underside is white.[3] The maximum recorded disc width for this species is 72.5 cm.[3] Researchers have very little information about the life history or behavior of T. acutirostra.[4]

Like other stingrays, it is thought to be aplacental viviparous (giving birth to live young without a placenta).[4]

What the specialist sources record

The World Register of Marine Species lists Telatrygon acutirostra as an accepted species in the family Dasyatidae, order Myliobatiformes, class Elasmobranchii.[5] GBIF Backbone Taxonomy also accepts this species, and holds 34 occurrence records for it.[6] An adult male, measuring 72.5 cm in disc width and collected by trawling in the East China Sea, serves as the type specimen.[3] The species name acutirostra is derived from Latin, combining acuti meaning "sharp" and rostra meaning "snout".[3]

Compared to the similar T. zugei, this species has a larger eyeball and lacks a dorsal fin fold on its tail.[3]

References

  1. Wikipedia, "Telatrygon acutirostra" (CC BY-SA 4.0), which cites: Rigby, C.L., "Telatrygon acutirostra", 2021 (original not read by us) en.wikipedia.org
  2. Wikipedia, "Telatrygon acutirostra" (CC BY-SA 4.0), which cites: ; Rigby, C.L., "Telatrygon acutirostra", 2021 (original not read by us) en.wikipedia.org
  3. Wikipedia, "Telatrygon acutirostra" (CC BY-SA 4.0), which cites: Nishida, K., "A new species of the genus Dasyatis (Elasmobranchii: Dasyatididae) from Southern Japan and lectotype designation of D. zugei", Japanese Journal of Ichthyology, p. 115–123 (original not read by us) en.wikipedia.org
  4. Wikipedia, "Telatrygon acutirostra" (CC BY-SA 4.0), which cites: Rigby, C.L., "Telatrygon acutirostra", 2021; (original not read by us) en.wikipedia.org
  5. World Register of Marine Species, Telatrygon acutirostra (AphiaID 1011795). CC BY 4.0. marinespecies.org
  6. GBIF Backbone Taxonomy and occurrence index, Telatrygon acutirostra (taxon key 9406855). CC BY 4.0 (backbone); counts are facts. gbif.org

Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Telatrygon acutirostra (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.

Related entries

Same family (Dasyatidae)

Bennett's stingray Hemitrygon bennetti, Black-spotted whipray Maculabatis astra, Blackedge whipray Himantura marginata, Blackish stingray Hemitrygon navarrae

More in Rays

Brevitrygon walgaBrevitrygon manjajiaeAtlantic stingrayBlue stingrayBluntnose stingrayBroad stingrayCommon stingrayGiant stumptail stingrayGroovebelly stingrayDasyatis marmorataPitted stingrayShort-tail stingray

Test yourself

Three questions drawn from this entry’s sources. Pick an answer to check it.

1. Who first scientifically described the Telatrygon acutirostra?

Correct.

Not quite. The answer is Kiyonori Nishida.

2. What is the IUCN Red List category of the Telatrygon acutirostra?

Correct.

Not quite. The answer is Vulnerable.

3. To which biological family does the Telatrygon acutirostra belong?

Correct.

Not quite. The answer is Dasyatidae.

Answers checked against the source article

Sources

Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.

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