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Bay of Bengal blue-ringed octopus

Hapalochlaena nierstraszi

Hil dezakeTratamendurik gabe hil zaitzake. Kosk egiten badizu, eskatu laguntza azkar.

Kono-barraskiloak eta olagarroak

KoskaJaten du: Haragia

Arriskua pertsonentzat: Oso arriskutsuaTratamendurik jasotzen ez duen pertsona bat hil dezake.

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

Non bizi den

Bay of Bengal, Indian Ocean and Pacific Ocean, from Japan to Australia (blue-ringed octopuses in general)1

Ozeano Indikoa, Andaman itsasoa, Bengalako golkoa

Hasiera

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

Luzera

12 cm eta 20 cm artean (4,7 in eta 7,9 in artean)1

Abiadura handiena

25 km/h inguru (16 mph)

Igeriketa, kalkulu gutxi gorabeherakoa

Zer jaten du?

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

Argazkia: Bay of Bengal blue-ringed octopus — Bay of Bengal blue-ringed octopus. Argazkia: Jens Petersen. CC BY 2.5, Wikimedia Commons.

Nola ezagutu

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

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

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

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: Oso arriskutsuaTratamendurik jasotzen ez duen pertsona bat hil dezake.

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

Zer egiten du beldurtzen denean?

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

Kosk egiten badu

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
Presio-immobilizazioa: bildu benda elastiko sendo bat koskaren gainean eta gero gorputz-adar osoan gora, immobilizatu ferula batekin, eta eutsi pertsona guztiz geldi laguntza iritsi arte.
Eraztun urdineko olagarro batek edo kono-barraskilo batek pertsona baten arnasketa gelditu dezake, pertsona hori oraindik esna dagoela: eskatu laguntza eta egon prest erreskate-arnasketak emateko anbulantziak ardura hartu arte.

Deitu beti lehenik zure larrialdi-zenbakira (112, 000, 911). Lehen sorospenei buruzko orientabide orokorra da hau, ez mediku-aholkua. Lehen sorospenen oinarriak

Egon seguru

Ez ukitu, ez harrapatu eta ez zirikatu inoiz animalia basati bat, txikia izan arren, eta lo edo hilda dagoela badirudi ere.
Utzi tartea. Bat aurkitzen baduzu, egon lasai, egin atzera poliki eta utzi bere bidetik joaten.
Batek kosk egiten badizu: egon lasai, egon geldi, deitu zure larrialdi-zenbakira (112, 000, 911) edo joan ospitalera azkar. Gogoratu nolakoa zen, argazki batek laguntzen du.

Ez dabil zure atzetik. Pozoia janaria harrapatzeko edo bere burua babesteko erabiltzen du, eta askoz nahiago du ezkutatu. Seguru egoteari buruz gehiago

Munduko zein tokitan?

Afrika Asia Europa Ipar Amerika Hego Amerika Australia eta Ozeania Ozeano Indikoa Andaman itsasoa Bengalako golkoa

Zein handia da?

Zein luzea da?

6 eraikuntza-bloke ilaran jarrita bezain luzeaigerileku handi baten luzera (50 m) igerian egin lezake 7,2 segundotan

Zein handia da Bay of Bengal blue-ringed octopus ZUREKIN alderatuta?

Matematika hutsa zure nabigatzailean. Ez da ezer gordetzen, ezta inora bidaltzen ere.

Zein azkarra da?

Igerilari olinpiko bat 8 km/h inguru (5 mph)

Bay of Bengal blue-ringed octopus 25 km/h inguru (16 mph)

Izurde bat abiadura betean 35 km/h inguru (22 mph)

jakin beharrekoa

Datuak

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

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

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

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

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

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

Mito-hauslea

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

Egia: 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

Pozoi-adituentzat

Izen zientifikoa: Hapalochlaena nierstraszi
Taldea: Kono-barraskiloak eta olagarroak
Familia: Octopodidae2
Ordena: Octopoda
Kontinenteak: Ozeano Indikoa, Andaman itsasoa, Bengalako golkoa, Ozeanoak
Kumeak: 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
Nola dagoen naturan: Least concern1
Arriskua pertsonentzat: 4 / 5: Oso arriskutsua3

Datuak nondik datozen

Blue-ringed octopus (Wikipedia (CC BY-SA 4.0))
Hapalochlaena nierstraszi (iNaturalist): izenak eta sailkapena.
Venom Wiki: arrisku-maila, ohiko tamaina eta abiadura-kalkulua geureak dira. Ikusi nola kalkulatzen ditugun: Nola baloratzen dugun arriskua.

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