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Short-tail stingray

Bathytoshia brevicaudata
Sobre o nome: The scientific name Bathytoshia brevicaudata comes from the Latin words brevis (short) and cauda (tail), which refer to its short tail.1
Pode matarPode matarte sen tratamento. Se te pica, busca axuda rápido.
Peixes pezoñentos PicaCome: Carne
Perigo para as persoas: Moi perigosoPode matar a unha persoa que non reciba tratamento.

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

Vive en
Temperate waters of the Southern Hemisphere: southern Africa, southern Australia, including Tasmania, and New Zealand1
Océano Índico, Océano Pacífico, Mar do Coral
Inicio
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
Lonxitude
4,3 m (14 ft)1
Peso
350 kg (772 lb)1
Velocidade máxima
uns 30 km/h (19 mph)
Nadando, estimación aproximada
Que come?
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
De verdade!Foto de Short-tail stingray
Short-tail stingray. Foto: Alpha from Melbourne, Australia. CC BY-SA 2.0, Wikimedia Commons.

Como recoñecelo

  • 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

Adoita confundirse con: 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

Poder da pezoña

Pica

A pezoña sae por un ferrete.

Que fai a súa pezoña?

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

Que perigoso é para as persoas?

Perigo para as persoas: Moi perigosoPode matar a unha persoa que non reciba tratamento.

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

Que fai cando ten medo?

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

Se pica

  • Mete a ferida en auga quente, tan quente como a persoa poida aguantar sen queimarse (próbaa coa túa propia man), durante 30 a 90 minutos. Busca axuda médica, sobre todo no caso dos peixes pedra e das raias con ferrete.

Chama sempre primeiro ao teu número de emerxencias (112, 000, 911). Isto son consellos xerais de primeiros auxilios, non consello médico. Primeiros auxilios básicos

Mantente a salvo

  • Nunca toques, collas nin molestes un animal salvaxe, aínda que sexa pequeno e aínda que pareza durmido ou morto.
  • Déixalle espazo. Se atopas un, mantén a calma, recúa amodo e déixao ir polo seu camiño.
  • Se un te pica: mantén a calma, non te movas, chama ao teu número de emerxencias (112, 000, 911) ou vai rápido a un hospital. Lembra como era, unha foto axuda.

Non vai a por ti. Usa a súa pezoña para cazar comida ou para defenderse, e prefire con moito agocharse. Máis sobre como estar a salvo

En que lugar do mundo?

ÁfricaAsiaEuropaAmérica do NorteAmérica do SurAustralia e OceaníaOcéano PacíficoOcéano ÍndicoMar do Coral

Que tamaño ten?

Canto mide?

Short-tail stingray mide uns 4,3 m (14 ft)A bicicleta dun adulto uns 1,8 m (5,9 ft)Un coche uns 4,5 m (15 ft)

Canto pesa?

pesa coma 18 cans
mide coma 4 cans do fociño á colamide coma 24 bananas postas en filapodería nadar o longo dunha piscina grande (50 m) en 6 segundos

Que tamaño ten Short-tail stingray comparado CONTIGO?

Só son contas no teu navegador. Non se garda nin se envía nada a ningures.

Que rápido é?

paga a pena sabelo

Datos

1

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

2

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

3

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

4

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

5

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

Para expertos en pezoñas

Nome científico
Bathytoshia brevicaudata
Grupo
Peixes pezoñentos
Familia
Dasyatidae2
Orde
Myliobatiformes
Continentes
Océano Índico, Océano Pacífico, Mar do Coral, Os océanos
Crías
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
Como lle vai na natureza
Least Concern (IUCN)1
Perigo para as persoas
4 / 5: Moi perigoso3

De onde veñen os datos

  1. Short-tail stingray (Wikipedia (CC BY-SA 4.0))
  2. Bathytoshia brevicaudata (iNaturalist): nomes e clasificación.
  3. Venom Wiki: o nivel de perigo, o tamaño típico e a velocidade estimada son nosos. Mira como os calculamos: Como valoramos o perigo.

Cada dato desta páxina ten un número que leva á súa fonte. Se nos equivocamos nalgo, sentímolo, somos fans dos animais, non unha revista científica. Dínolo en [email protected] e arranxarémolo.

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