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Short-tail stingray

Bathytoshia brevicaudata

Oor die naam: The scientific name Bathytoshia brevicaudata comes from the Latin words brevis (short) and cauda (tail), which refer to its short tail.1

Kan doodmaakKan jou doodmaak sonder behandeling. As dit jou steek, kry vinnig hulp.

Giftige visse

StekeEet: Vleis

Gevaar vir mense: Baie gevaarlikDit kan 'n mens doodmaak wat geen behandeling kry nie.

The short-tail stingray is one of the largest stingrays in the world. It lives in temperate seas off southern Africa, southern Australia and New Zealand, mostly on or near the sea floor. It is not aggressive, but its long venomous sting can cause a serious wound if the ray is startled.1

Leef in

Temperate waters of the Southern Hemisphere: southern Africa, southern Australia, including Tasmania, and New Zealand1

Indiese Oseaan, Stille Oseaan, Koraalsee

Tuis

It lives on the bottom in estuaries, sheltered bays, sandy flats, rocky reefs and the outer continental shelf, and sometimes swims up into open water. Off southern Africa it is usually found offshore, at depths of 180 to 480 m. Off Australia and New Zealand it can be found from the intertidal zone down to 156 m. At Hamelin Bay in Western Australia, many rays gather where visitors hand-feed them fish scraps.1

Lengte

4,3 m (14 ft)1

Gewig

350 kg (772 lb)1

Topspoed

omtrent 30 km/h (19 mph)

Swem, rowwe skatting

Wat eet dit?

It eats bony fishes and invertebrates such as molluscs and crustaceans, including burrowing species. It finds buried bivalves and spoon worms by detecting the tiny water jets they produce, then sucks them out of the sediment. It also eats open-water animals such as salps and hyperiid amphipods.1

Foto van Short-tail stingray — Short-tail stingray. Foto: Alpha from Melbourne, Australia. CC BY-SA 2.0, Wikimedia Commons.

Hoe om dit te herken

Diamond-shaped, heavy disc that is smooth, with no scales (dermal denticles) on the disc even in adults1
Plain grey-brown back, darkening towards the tail and above the eyes, with a line of white pores on either side of the head1
Whitish underside, darkening towards the edges of the fins1
Tail usually shorter than the disc, thick at the base, with one or two serrated stinging spines about halfway along it1
Adults have a row of large, spear-like thorns in front of the sting1

Word dikwels verwar met: The pitted stingray (Dasyatis matsubarai) of the northwestern Pacific looks similar but is smaller. Records of this species from northern Australia and Thailand are thought to be other rays that were misidentified.1

Gifkrag

Steke

Gif kom deur 'n angel uit.

Wat doen sy gif as dit byt of steek?

Its sting is venomous. The mucous sheath covering the sting contains a toxin that causes necrosis, which means the death of body tissue. The most dangerous injuries involve damage to a vital organ, heavy blood loss, or secondary infection (sepsis) or tetanus.1

Hoe gevaarlik is dit vir mense?

Gevaar vir mense: Baie gevaarlikDit kan 'n mens doodmaak wat geen behandeling kry nie.

The short-tail stingray is not aggressive, but if startled or harassed it can inflict a serious and even fatal wound. Its sting can be over 30 cm long and can penetrate most footwear, including kevlar bootees. It is responsible for most stingray injuries off New Zealand, including the death of Australian naturalist Steve Irwin, who was pierced in the chest by its barbed tail.1

Wat doen dit as dit bang is?

When threatened, it raises its tail over its back like a scorpion, and a startled ray can leap through the water and strike with its tail.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 Indiese Oseaan Koraalsee

Hoe groot is dit?

Hoe lank is dit?

Hoe swaar is dit?

so swaar soos 18 honde

so lank soos 4 honde neus tot stertso lank soos 24 piesangs punt aan puntkan die lengte van 'n groot swembad (50 m) in 6 sekondes swem

Hoe groot is Short-tail 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)

Short-tail stingray omtrent 30 km/h (19 mph)

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

die moeite werd om te weet

Feite

It can flap its pectoral fins with enough force to make a loud audible 'bang' in the water, although it is usually slow-moving.1

It is one of the largest stingrays in the world, and reliable observers off New Zealand have reported individuals almost 3 m across.1

Captive experiments suggest it can detect magnetic fields, which may help it navigate.1

Every summer, large groups gather under the rocky archways of the Poor Knights Islands off New Zealand, where both mating and birthing have been seen.1

Captive females have been observed mating with up to three different males in succession.1

Vir gifkenners

Wetenskaplike naam: Bathytoshia brevicaudata
Groep: Giftige visse
Familie: Dasyatidae2
Orde: Myliobatiformes
Kontinente: Indiese Oseaan, Stille Oseaan, Koraalsee, Die oseane
Babas: It gives birth to live young. Females usually have litters of 6 to 10 pups in summer, and newborns measure 32 to 36 cm across.1
Hoe dit in die natuur gaan: Least Concern (IUCN)1
Gevaar vir mense: 4 / 5: Baie gevaarlik3

Waar die feite vandaan kom

Short-tail stingray (Wikipedia (CC BY-SA 4.0))
Bathytoshia brevicaudata (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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