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Xingu River ray

Potamotrygon leopoldi

Gbasara aha ya: It is named in honour of King Leopold III of Belgium, who sponsored many scientific studies.1

Ọ chọrọ dọkịtaỌ naghị egbukarị egbu, mana ịgba ya chọrọ dọkịta.

Azụ na-agba nsị

ỊgbaNri ya: Anụ

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

The Xingu River ray is a freshwater stingray that lives only in the Xingu River basin in Brazil. It likes clear water over rocky riverbeds. It has a venomous spine in its tail, so it is one to admire from a distance.1

Ebe obibi

Xingu River basin, Brazil (endemic)1

Ndịda Amerika

Ụlọ

It prefers clear waters with rocky bottoms in the Xingu River basin. It is sometimes kept in aquaria.1

Ogologo

75 cm (2.5 ft)1

Arọ

20 kg (44 lb)1

Ọsọ kacha elu

ihe dị ka 15 km/h (9.3 mph)

Igwu mmiri, nchepụta

Gịnị ka ọ na-eri?

Mature rays have jaws that become stiffer and more strongly mineralised with age, so they can eat hard-shelled invertebrates.1

Foto Xingu River ray — Xingu River ray. Foto: Photo by and (C)2007 Derek Ramsey (Ram-Man). CC BY-SA 2.5, Wikimedia Commons.

Otú ị ga-esi mata ya

Deeper black above than its relative P. henlei1
Fewer and larger yellowish-white spots on the upper side than P. albimaculata1
Underparts are mostly brownish-dusky1
Females grow larger than males1

A na-agwakọkarị ya na: It is closely related to P. henlei from the Tocantins River basin and P. albimaculata from the Tapajós River basin, and they look similar. P. henlei has a large white centre on its underparts, while this species has mostly brownish-dusky underparts. P. albimaculata has more spots above, and they are smaller than the spots on this species.1

Ike nsị

Ịgba

Nsị na-esi na ndụdụ ya apụta.

Gịnị ka nsị ọ na-agba na-eme?

The venom is held in a dentine spine on the tail. Its composition stays the same as the ray matures, but its toxicity decreases as the ray gets older.1

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?

Afrịka Eshia Yurop Ugwu Amerika Ndịda Amerika Ọstrelia na Oshenia

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Kedu otú o si dị arọ?

dị arọ dị ka nwamba ụlọ 5

dị ogologo dị ka unere 4 a tọgbọrọ n'ahịrịnwere ike igwu mmiri ogologo nnukwu ọdọ igwu mmiri (50 m) n'ime sekọnd 12

Kedu otú Xingu River ray 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?

Onye igwu mmiri Olympic ihe dị ka 8 km/h (5 mph)

Xingu River ray ihe dị ka 15 km/h (9.3 mph)

Dọlfin na-agba ọsọ n'ike ya niile ihe dị ka 35 km/h (22 mph)

ọ dị mma ịmara

Eziokwu

Its venom toxicity drops as it gets older, while the venom's makeup stays the same.1

It can weigh up to 20 kg, which is very large for a freshwater stingray.1

As it matures, its jaws become stronger, which lets it eat hard-shelled invertebrates.1

Females grow larger than males.1

Maka ndị ọkachamara nsị

Aha sayensị: Potamotrygon leopoldi
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

Xingu River ray (Wikipedia (CC BY-SA 4.0))
Potamotrygon leopoldi (iNaturalist): aha na nhazi ọkwa.
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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