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Chithunzi chojambula cha Xingu River ray
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Xingu River ray

Potamotrygon leopoldi
Za dzinali: It is named in honour of King Leopold III of Belgium, who sponsored many scientific studies.1
Ikufuna dokotalaSiipha kawirikawiri, koma kulasidwa kumafuna dokotala.
Nsomba zaululu ImalasaImadya: Nyama
Ngozi kwa anthu: YoopsaKulasidwa kumafuna dokotala. Imfa ndi zosowa kwambiri.

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

Imakhala ku
Xingu River basin, Brazil (endemic)1
Amereka ya Kumwera
Kunyumba
It prefers clear waters with rocky bottoms in the Xingu River basin. It is sometimes kept in aquaria.1
Kutalika
75 cm (2,5 ft)1
Kulemera
20 kg (44 lb)1
Liwiro lapamwamba
pafupifupi 15 km/h (9,3 mph)
Kusambira, kuyerekeza chabe
Imadya chiyani?
Mature rays have jaws that become stiffer and more strongly mineralised with age, so they can eat hard-shelled invertebrates.1
Zoona!Chithunzi cha Xingu River ray
Xingu River ray. Chithunzi: Photo by and (C)2007 Derek Ramsey (Ram-Man). CC BY-SA 2.5, Wikimedia Commons.

Mmene ungaizindikirire

  • 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

Nthawi zambiri imasokonezedwa ndi: 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

Mphamvu ya ululu

Imalasa

Ululu umatuluka kudzera mu mbola.

Ululu wake umachita chiyani?

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

Ndi yoopsa bwanji kwa anthu?

Ngozi kwa anthu: YoopsaKulasidwa kumafuna dokotala. Imfa ndi zosowa kwambiri.

Ikalasa

  • Ika bala m'madzi otentha, otentha monga momwe munthuyo angapirire osapsa (yesa ndi dzanja lako), kwa mphindi 30 mpaka 90. Peza thandizo la dokotala, makamaka pa stonefish ndi stingray.

Nthawi zonse yamba wayimbira nambala yadzidzidzi (112, 000, 911). Awa ndi malangizo wamba a chithandizo choyamba, osati malangizo a dokotala. Zoyambira za chithandizo choyamba

Khala wotetezeka

  • Usakhudze, kugwira kapena kuseweretsa nyama yakuthengo, ngakhale yaing'ono, ndipo ngakhale ikuoneka ngati yagona kapena yafa.
  • Ipatse malo. Ukakumana nayo, khala chete, bwerera m'mbuyo pang'onopang'ono ndipo uilole ipite njira yake.
  • Ikakulasa: khala chete, usasunthe, imbira nambala yadzidzidzi (112, 000, 911) kapena pita kuchipatala mwachangu. Kumbukira m'mene inkaonekera, chithunzi chimathandiza.

Sikufuna kukuvulaza. Imagwiritsa ntchito ululu wake kugwira chakudya kapena kudziteteza, ndipo imakonda kwambiri kubisala. Zambiri za kukhala wotetezeka

Kuti padziko lapansi?

AfricaAsiaUlayaAmereka ya KumpotoAmereka ya KumweraAustralia ndi Oceania

Ndi yaikulu bwanji?

Ndi yaitali bwanji?

Xingu River ray yaitali pafupifupi 75 cm (2,5 ft)Mphaka wapakhomo pafupifupi 50 cm (1,6 ft)Galu pafupifupi 1 m (3,3 ft)

Ndi yolemera bwanji?

yolemera ngati amphaka apakhomo 5
yaitali ngati nthochi 4 zoyalidwa motsatizanaingasambire kutalika kwa dziwe lalikulu losambira (50 m) m'masekondi 12

Xingu River ray ndi yaikulu bwanji poyerekeza ndi IWE?

Ndi masamu chabe mu msakatuli wako. Palibe chomwe chimasungidwa kapena kutumizidwa kwina.

Imathamanga bwanji?

zoyenera kudziwa

Mfundo

1

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

2

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

3

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

4

Females grow larger than males.1

Za akatswiri a ululu

Dzina la sayansi
Potamotrygon leopoldi
Gulu
Nsomba zaululu
Banja
Potamotrygonidae2
Dongosolo
Myliobatiformes
Makontinenti
Amereka ya Kumwera
Ngozi kwa anthu
3 / 5: Yoopsa3

Kumene mfundo zimachokera

  1. Xingu River ray (Wikipedia (CC BY-SA 4.0))
  2. Potamotrygon leopoldi (iNaturalist): mayina ndi magulu a sayansi.
  3. Venom Wiki: mlingo wa ngozi, kukula wamba ndi kuyerekeza kwa liwiro ndi zathu. Ona mmene timazipezera: Mmene timayezera ngozi.

Mfundo iliyonse patsamba lino ili ndi nambala yosonyeza kochokera. Ngati talakwitsa, pepani, ndife okonda nyama, osati magazini a sayansi. Tiuze pa [email protected] ndipo tikonza.

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