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Debuxo de Bay of Bengal blue-ringed octopus
N.º 1165 de 1 402

Bay of Bengal blue-ringed octopus

Hapalochlaena nierstraszi
Pode matarPode matarte sen tratamento. Se te morde, busca axuda rápido.
Caracois cono e polbos MordeCome: Carne
Perigo para as persoas: Moi perigosoPode matar a unha persoa que non reciba tratamento.

The Bay of Bengal blue-ringed octopus is a small sea creature that hides in rock crevices and coral reefs. It is one of the most venomous marine animals in the world, even though it is only about the size of a hand. Its blue rings are a warning to keep away.1

Vive en
Bay of Bengal, Indian Ocean and Pacific Ocean, from Japan to Australia (blue-ringed octopuses in general)1
Océano Índico, Mar de Andamán, Golfo de Bengala
Inicio
It lives in tide pools, between rocks, in crevices and shells, and on coral reefs. Blue-ringed octopuses hide in crevices and pile rocks at the entrance to their lairs.1
Lonxitude
12 cm a 20 cm (4,7 in a 7,9 in)1
Velocidade máxima
uns 25 km/h (16 mph)
Nadando, estimación aproximada
Que come?
It eats small crustaceans, including crabs, hermit crabs and shrimp, as well as fish. It pounces on its prey, seizes it with its arms, and pierces the shell or exoskeleton with its horny beak to release venom.1
De verdade!Foto de Bay of Bengal blue-ringed octopus
Bay of Bengal blue-ringed octopus. Foto: Jens Petersen. CC BY 2.5, Wikimedia Commons.

Como recoñecelo

  • Yellowish skin with blue and black rings1
  • Small size, about 12 to 20 cm1
  • When provoked, it turns bright yellow and its rings flash bright iridescent blue within a third of a second1
  • Usually hides in crevices and is rarely seen out in the open1

Poder da pezoña

Morde

A pezoña sae polos seus cairos ou dentes cando morde.

Que fai a súa pezoña?

Its venom contains tetrodotoxin, a neurotoxin (a poison that attacks the nerves). It causes paralysis of the muscles and can stop breathing within minutes. Victims stay fully aware but cannot move, and the venom can also cause nausea, heart failure and blindness.1

Que perigoso é para as persoas?

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

The octopus carries enough venom to kill more than 20 adult humans within minutes. Its bites are tiny and often painless, so victims may not realise they have been bitten until breathing problems and paralysis begin. Estimates of recorded human deaths range from seven to 16, and most scholars agree at least 11 have occurred. Children are the most at risk because of their small body size.1

Que fai cando ten medo?

It first tries to flee. If the threat continues, it takes a defensive stance and flashes its blue rings, and if cornered and touched it may bite.1

Se morde

  • First aid is pressure on the wound, followed by artificial respiration as soon as paralysis stops the victim breathing. Respiratory support should continue until medical help arrives. In hospital, the patient is put on a ventilator until the toxin leaves the body, and those who survive the first 24 hours usually recover completely.1
  • Inmobilización con presión: envolve cunha venda elástica firme a mordedura e despois todo o membro cara arriba, ponlle unha férula e mantén a persoa completamente quieta ata que chegue a axuda.
  • Un polbo de aneis azuis ou un caracol cono poden facer que unha persoa deixe de respirar mentres aínda está consciente: pide axuda e prepárate para darlle respiracións de rescate ata que a ambulancia se faga cargo.

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 morde: 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 ÍndicoMar de AndamánGolfo de Bengala

Que tamaño ten?

Canto mide?

Bay of Bengal blue-ringed octopus mide uns 20 cm (7,9 in)Unha banana uns 18 cm (7,1 in)Un gato doméstico uns 50 cm (1,6 ft)
mide coma 6 pezas de construción de xoguete en filapodería nadar o longo dunha piscina grande (50 m) en 7,2 segundos

Que tamaño ten Bay of Bengal blue-ringed octopus 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

The blue-ringed octopus was the first animal reported to use tetrodotoxin as a venom. The same toxin is also found in pufferfish, rough-skinned newts and some poison dart frogs.1

2

The mother may inject the toxin into her eggs, which may then make their own venom before hatching.1

3

The octopus produces its venom using bacteria living inside its posterior salivary gland.1

4

Its blue rings flash in less than a third of a second, using muscles under nerve control. This is a warning display.1

5

The octopus's own body is resistant to its tetrodotoxin, so the venom does not harm it.1

6

In the 1983 James Bond film Octopussy, the blue-ringed octopus is the symbol of a secret order of female bandits and smugglers.1

Desmontamitos

Mito: Because it is small and relatively docile, the blue-ringed octopus is harmless.

Verdade: It is small and usually calm, but it is very dangerous if it is provoked or handled. Its venom can kill a healthy adult within minutes if not treated.1

Para expertos en pezoñas

Nome científico
Hapalochlaena nierstraszi
Grupo
Caracois cono e polbos
Familia
Octopodidae2
Orde
Octopoda
Continentes
Océano Índico, Mar de Andamán, Golfo de Bengala, Os océanos
Crías
The female lays one clutch of about 50 eggs in late autumn and keeps them under her arms for about six months. She does not eat during this time, and she dies after the eggs hatch.1
Como lle vai na natureza
Least concern1
Perigo para as persoas
4 / 5: Moi perigoso3

De onde veñen os datos

  1. Blue-ringed octopus (Wikipedia (CC BY-SA 4.0))
  2. Hapalochlaena nierstraszi (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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