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Risba: Bay of Bengal blue-ringed octopus
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Bay of Bengal blue-ringed octopus

Hapalochlaena nierstraszi
Lahko ubijeBrez zdravljenja te lahko ubije. Če te ugrizne, hitro poišči pomoč.
Stožčasti polži in hobotnice UgriziJe: Meso
Nevarnost za ljudi: Zelo nevarnaČloveka, ki ne dobi zdravljenja, lahko ubije.

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

Živi v
Bay of Bengal, Indian Ocean and Pacific Ocean, from Japan to Australia (blue-ringed octopuses in general)1
Indijski ocean, Andamansko morje, Bengalski zaliv
Domov
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
Dolžina
12 cm do 20 cm (4,7 in do 7,9 in)1
Največja hitrost
približno 25 km/h (16 mph)
Plavanje, groba ocena
Kaj je?
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
Zares!Fotografija: Bay of Bengal blue-ringed octopus
Bay of Bengal blue-ringed octopus. Fotografija: Jens Petersen. CC BY 2.5, Wikimedia Commons.

Kako jo prepoznaš

  • 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

Moč strupa

Ugrizi

Strup pride ven skozi strupnike ali zobe, ko ugrizne.

Kaj naredi njen strup, ko ugrizne ali piči?

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

Kako nevarna je za ljudi?

Nevarnost za ljudi: Zelo nevarnaČloveka, ki ne dobi zdravljenja, lahko ubije.

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

Kaj naredi, ko se prestraši?

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

Če ugrizne

  • 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
  • Imobilizacija s pritiskom: čvrsto ovij elastični povoj čez ugriz in nato navzgor po celem udu, ud imobiliziraj z opornico in poškodovanca drži popolnoma pri miru, dokler ne pride pomoč.
  • Modroobročkasta hobotnica ali stožčasti polž lahko človeku ustavi dihanje, medtem ko je še pri zavesti: pokliči pomoč in bodi pripravljen dajati umetne vpihe, dokler reševalci ne prevzamejo.

Vedno najprej pokliči številko za klic v sili (112, 000, 911). To so splošna navodila za prvo pomoč, ne zdravniški nasvet. Osnove prve pomoči

Ostani varen

  • Nikoli se ne dotikaj divje živali, je ne lovi in je ne draži, tudi če je majhna in tudi če je videti, kot da spi ali je mrtva.
  • Pusti ji prostor. Če jo srečaš, ostani miren, počasi stopi nazaj in jo pusti, da gre svojo pot.
  • Če te ugrizne: ostani miren, ne premikaj se, pokliči številko za klic v sili (112, 000, 911) ali hitro pojdi v bolnišnico. Zapomni si, kako je izgledala, fotografija pomaga.

Ne preži nate. Strup uporablja, da ulovi hrano ali se zaščiti, in se veliko raje skrije. Več o varnosti

Kje na svetu?

AfrikaAzijaEvropaSeverna AmerikaJužna AmerikaAvstralija in OceanijaIndijski oceanAndamansko morjeBengalski zaliv

Kako velika je?

Kako dolga je?

Bay of Bengal blue-ringed octopus približno 20 cm dolga (7,9 in)Banana približno 18 cm (7,1 in)Domača mačka približno 50 cm (1,6 ft)
dolga kot 6 kock za igranje v vrstizmore preplavati dolžino velikega bazena (50 m) v 7,2 sekundah

Kakšne velikosti je Bay of Bengal blue-ringed octopus v primerjavi s TABO?

Samo matematika v tvojem brskalniku. Nič se ne shrani in nič se nikamor ne pošlje.

Kako hitra je?

vredno vedeti

Dejstva

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

Razbijalec mitov

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

Resnica: 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

Za strokovnjake za strupe

Znanstveno ime
Hapalochlaena nierstraszi
Skupina
Stožčasti polži in hobotnice
Družina
Octopodidae2
Red
Octopoda
Celine
Indijski ocean, Andamansko morje, Bengalski zaliv, Oceani
Mladiči
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
Kako ji gre v naravi
Least concern1
Nevarnost za ljudi
4 / 5: Zelo nevarna3

Od kod so dejstva

  1. Blue-ringed octopus (Wikipedia (CC BY-SA 4.0))
  2. Hapalochlaena nierstraszi (iNaturalist): imena in razvrstitev.
  3. Venom Wiki: stopnja nevarnosti, tipična velikost in ocena hitrosti so naše lastne. Poglej, kako jih določimo: Kako ocenjujemo nevarnost.

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