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Eserese katuun nke Largespot river stingray
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Largespot river stingray

Potamotrygon falkneri
Gbasara aha ya: Potamotrygon comes from the Greek words for 'river' and 'sting ray'. The species name honours Tomas Falkner, a British Jesuit priest who did scientific work in Argentina in the 1700s.1
Ọ chọrọ dọkịtaỌ naghị egbukarị egbu, mana ịgba ya chọrọ dọkịta.
Azụ na-agba nsị Ịgba
Ihe ize ndụ nye mmadụ: Ọ dị njọỊgba ya chọrọ dọkịta. Ọnwụ anaghị adịkarị ma ọlị.

The largespot river stingray is a freshwater stingray with a flat, round body covered in dense spots. It lives in the rivers of tropical and subtropical South America, mainly the Paraná-Paraguay river basin and parts of the upper Amazon. It is sometimes kept in aquariums, but it needs a very large tank.1

Ebe obibi
Tropical and subtropical South America: the Paraná-Paraguay basin (southern Brazil, Paraguay, Uruguay, northeastern Argentina) and the upper Amazon Basin (Bolivia, eastern Peru, western Brazil)1
Ndịda Amerika
Ụlọ
It lives in freshwater rivers. It is sometimes seen in the aquarium trade, where it needs a very large tank.1
Ogologo
89 cm (2.9 ft)1
Ọsọ kacha elu
ihe dị ka 16 km/h (9.9 mph)
Igwu mmiri, nchepụta
N'ezie!Foto Largespot river stingray
Largespot river stingray. Foto: Donald Davesne. CC BY 4.0, iNaturalist.

Otú ị ga-esi mata ya

  • It is densely spotted on its upper side.1
  • The exact colour and pattern vary a lot between individuals, and many intermediate patterns exist.1
  • The disc (the flat body) reaches a width of up to 52 cm.1
  • Its total length, including the tail, reaches up to 89 cm.1

A na-agwakọkarị ya na: The so-called 'tiger stingray' has often been mistaken for this species. It is a separate species, P. tigrina, which was only scientifically described in 2011.1

Ike nsị

Ịgba

Nsị na-esi na ndụdụ ya apụta.

Kedu otú o si dị egwu nye mmadụ?

Ihe ize ndụ nye mmadụ: Ọ dị njọỊgba ya chọrọ dọkịta. Ọnwụ anaghị adịkarị ma ọlị.

Ọ bụrụ na ọ gbaa

  • Tinye ọnya ahụ n'ime mmiri ọkụ, nke ọkụ dị ka onye ahụ nwere ike ịnagide n'ere ya ọkụ (jiri aka gị nwalee ya), ruo nkeji 30 ruo 90. Chọọ enyemaka ọgwụ, karịsịa maka azụ nkume (stonefish) na stingray.

Na-ebu ụzọ kpọọ nọmba mberede gị mgbe niile (112, 000, 911). Nke a bụ ndụmọdụ enyemaka mbụ n'ozuzu, ọ bụghị ndụmọdụ ọgwụ. Isi ihe enyemaka mbụ

Nọrọ na nchekwa

  • Emetụla anụ ọhịa aka, ejidela ya, emekwala ya ihe ọjọọ, ọbụna obere, ọbụna ma ọ dị ka ọ na-ehi ụra ma ọ bụ nwụọ anwụ.
  • Nye ya ohere. Ọ bụrụ na ị zutere otu, dị jụụ, laghachi azụ nwayọ, hapụ ya ka ọ gaa ụzọ ya.
  • Ọ bụrụ na otu gbaa gị: dị jụụ, emegharịla ahụ, kpọọ nọmba mberede gị (112, 000, 911) ma ọ bụ gaa ụlọ ọgwụ ngwa ngwa. Cheta ka o si dị, foto na-enye aka.

Ọ naghị achụ gị. Ọ na-eji nsị ya ejide nri ma ọ bụ chebe onwe ya, ọ ga-akakwa mma n'anya ya ịzo onwe ya. Ihe ndị ọzọ gbasara ịnọ na nchekwa

Ebee n'ụwa?

AfrịkaEshiaYuropUgwu AmerikaNdịda AmerikaỌstrelia na Oshenia

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Largespot river stingray ogologo ya dị ihe dị ka 89 cm (2.9 ft)Nwamba ụlọ ihe dị ka 50 cm (1.6 ft)Nkịta ihe dị ka 1 m (3.3 ft)
dị ogologo dị ka nwamba ụlọ 2 site n'imi ruo n'ọdụdị ogologo dị ka unere 5 a tọgbọrọ n'ahịrịnwere ike igwu mmiri ogologo nnukwu ọdọ igwu mmiri (50 m) n'ime sekọnd 11

Kedu otú Largespot river stingray si hà ma e jiri ya tụnyere GỊ?

Naanị mgbakọ na mwepụ n'ime browser gị. Ọ dịghị ihe echekwara ma ọ bụ ezigara ebe ọ bụla.

Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

Its natural range was once cut off from the upper Paraná basin by the Guaíra Falls. After the Itaipu Dam was built, the falls disappeared, which let this species and several others spread into that area.1

2

Its spotted pattern is so variable that one pattern was once described as a separate species, P. castexi, and another as P. menchacai. All of these are now treated as variants of this species.1

3

It is sometimes kept in aquariums, but it needs a very large tank because of its size.1

Onye na-ekpughe akụkọ ụgha

Akụkọ ụgha: The 'tiger stingray' is the same animal as the largespot river stingray.

Eziokwu: The tiger stingray is a separate species, P. tigrina, which was only scientifically described in 2011. It was earlier mistaken for P. menchacai, which is a name for this species.1

Maka ndị ọkachamara nsị

Aha sayensị
Potamotrygon falkneri
Otu
Azụ na-agba nsị
Ezinụlọ
Potamotrygonidae2
Usoro
Myliobatiformes
Kọntinent dị iche iche
Ndịda Amerika
Ihe ize ndụ nye mmadụ
3 / 5: Ọ dị njọ3

Ebe eziokwu ndị a si

  1. Potamotrygon falkneri (Wikipedia (CC BY-SA 4.0))
  2. Potamotrygon falkneri (iNaturalist): aha na nhazi ọkwa.
  3. Venom Wiki: ọkwa ihe ize ndụ, nha nkịtị na nchepụta ọsọ bụ nke anyị. Lee otú anyị si achọpụta ha: Otú anyị si atụ ihe ize ndụ.

Eziokwu ọ bụla dị na peeji a nwere nọmba na-egosi ebe o si. Ọ bụrụ na anyị mehiere ihe, ndo, anyị bụ ndị hụrụ anụmanụ n'anya, ọ bụghị akwụkwọ akụkọ sayensị. Gwa anyị na [email protected], anyị ga-edozi ya.

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