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Pelagic stingray

Pteroplatytrygon violacea

Oor die naam: The scientific name comes from Greek words meaning 'wing' or 'fin', 'broad' and 'stingray', plus the Latin for 'purple', which refers to its colour.1

Moet 'n dokter sienSelde dodelik, maar 'n steek moet deur 'n dokter gesien word.

Giftige visse

StekeEet: Vleis

Gevaar vir mense: Ernstig'n Steek moet deur 'n dokter gesien word. Sterftes is baie skaars.

The pelagic stingray is a ray that lives in the open ocean rather than on the sea floor, which sets it apart from almost all other stingrays. It is found in warm waters around much of the world. It can give a severe sting with its tail spine, so it matters most to people who work on fishing boats.1

Leef in

Worldwide in warm tropical to warm-temperate ocean waters, between about 52°N and 50°S1

Atlantiese Oseaan, Stille Oseaan, Indiese Oseaan, Middellandse See, Karibiese See

Tuis

It lives in the open ocean, usually in surface waters down to about 100 m over deep water. It prefers water warmer than 19 °C and moves seasonally with warm water masses. People most often meet it as bycatch on fishing boats.1

Lengte

1,3 m (4,3 ft)1

Gewig

49 kg (108 lb)1

Topspoed

omtrent 21 km/h (13 mph)

Swem, rowwe skatting

Wat eet dit?

It is an active hunter that wraps its pectoral fins around prey and moves it to its mouth. It eats crustaceans, squid and octopus, bony fishes such as herring and mackerel, jellyfish and comb jellies, and polychaete worms.1

Foto van Pelagic stingray — Pelagic stingray. Foto: Diego Delso. CC BY-SA 4.0, Wikimedia Commons.

Hoe om dit te herken

The pectoral fin disc is a thick, wedge-shaped wing that is about one-third wider than it is long.1
It is a plain dark purple to blue-green above, with a slightly lighter shade below.1
The tail is whip-like, up to twice as long as the disc, with an extremely long, serrated spine about a third to halfway along it.1
Young rays are smooth-skinned, and small prickles and thorns appear with age.1

Gifkrag

Steke

Gif kom deur 'n angel uit.

Wat doen sy gif as dit byt of steek?

The venom is on the tail spine and is quite potent, which is why other fishes avoid it.1

Hoe gevaarlik is dit vir mense?

Gevaar vir mense: Ernstig'n Steek moet deur 'n dokter gesien word. Sterftes is baie skaars.

It is rarely encountered except by fishery workers. Its tail spine can inflict a severe wound that can be fatal.1

Wat doen dit as dit bang is?

When captured and handled, it releases a thick black mucus that covers its body, and its tail spine delivers venom.1

As dit steek

Sit die wond in warm water, so warm as wat die persoon kan verdra sonder om te brand (toets dit met jou eie hand), vir 30 tot 90 minute. Kry mediese hulp, veral vir klipvisse en pylsterte.

Bel altyd eers jou noodnommer (112, 000, 911). Dit is algemene noodhulpraad, nie mediese advies nie. Noodhulp-basiese beginsels

Bly veilig

Moet nooit aan 'n wilde dier raak, dit vang of terg nie, selfs nie 'n kleintjie nie, en selfs nie as dit lyk of dit slaap of dood is nie.
Gee dit spasie. As jy een raakloop, bly kalm, stap stadig terug en laat dit sy eie pad gaan.
As een jou steek: bly kalm, bly stil, bel jou noodnommer (112, 000, 911) of kom vinnig by 'n hospitaal uit. Onthou hoe dit gelyk het, 'n foto help.

Dit is nie uit om jou te kry nie. Dit gebruik sy gif om kos te vang of om homself te beskerm, en kruip baie eerder weg. Meer oor veilig bly

Waar in die wêreld?

Afrika Asië Europa Noord-Amerika Suid-Amerika Australië & Oseanië Stille Oseaan Atlantiese Oseaan Indiese Oseaan Middellandse See Karibiese See

Hoe groot is dit?

Hoe lank is dit?

Hoe swaar is dit?

so swaar soos 2,5 honde

so lank soos 2,5 huiskatte neus tot stertso lank soos 7 piesangs punt aan puntkan die lengte van 'n groot swembad (50 m) in 8,6 sekondes swem

Hoe groot is Pelagic stingray in vergelyking met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of enige plek heen gestuur nie.

Hoe vinnig is dit?

'n Olimpiese swemmer omtrent 8 km/h (5 mph)

Pelagic stingray omtrent 21 km/h (13 mph)

'n Dolfyn op volspoed omtrent 35 km/h (22 mph)

die moeite werd om te weet

Feite

It is the only stingray that almost exclusively lives in the open ocean rather than on the sea floor.1

Instead of rippling the edges of its disc like other stingrays, it swims by flapping its pectoral fins, similar to eagle rays.1

Both sexes have pointed teeth, which is unusual among stingrays. Only the teeth of adult males are longer and sharper.1

Females can store sperm inside their bodies for more than a year, waiting for good conditions before their young develop.1

A captive female reached 94 cm across and 49 kg, the largest individual on record from a rearing experiment.1

Oceanic whitetip sharks, great white sharks and toothed whales prey on it.1

Vir gifkenners

Wetenskaplike naam: Pteroplatytrygon violacea
Groep: Giftige visse
Familie: Dasyatidae2
Orde: Myliobatiformes
Kontinente: Atlantiese Oseaan, Stille Oseaan, Indiese Oseaan, Middellandse See, Karibiese See, Die oseane
Babas: It gives birth to live young. Females may bear two litters of 4 to 13 pups per year after a gestation of 2 to 4 months.1
Hoe dit in die natuur gaan: Least Concern1
Gevaar vir mense: 3 / 5: Ernstig3

Waar die feite vandaan kom

Pelagic stingray (Wikipedia (CC BY-SA 4.0))
Pteroplatytrygon violacea (iNaturalist): name en klassifikasie.
Venom Wiki: die gevaarvlak, die tipiese grootte en die spoedskatting is ons eie. Kyk hoe ons dit uitwerk: Hoe ons gevaar gradeer.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dierfanatici, nie 'n wetenskaplike joernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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