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Marrazkia: Golden lancehead
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Golden lancehead

Bothrops insularis
Izenari buruz: Its common name comes from the light yellowish-brown colour of its underside and from its lance-shaped head, which is typical of the genus Bothrops.1
Hil dezakeTratamendurik gabe hil zaitzake. Kosk egiten badizu, eskatu laguntza azkar.
Sugegorri zulodunak KoskaJaten du: Haragia
Arriskua pertsonentzat: Oso arriskutsuaTratamendurik jasotzen ez duen pertsona bat hil dezake.

The golden lancehead is an extremely venomous pit viper that lives only on one small Brazilian island, Ilha da Queimada Grande. It is one of the most venomous snakes in Latin America. Because the island is uninhabited and closed to visitors, it is very unlikely that people will ever meet one.1

Non bizi den
Ilha da Queimada Grande (Snake Island), off the coast of São Paulo state, Brazil. Found nowhere else in the wild.1
Hego Amerika
Hasiera
The island has forest, clearings and shrubs, and a mild climate that stays between 18 °C and just over 22 °C. The rocky terrain makes the island hard to reach, and no humans or other mammals live there. The snake hunts in trees and shelters in leaf litter or rock crevices.1
Luzera
70 cm eta 1,2 m artean (2,3 ft eta 3,9 ft artean)1
Abiadura handiena
3,5 km/h inguru (2,2 mph)
Lehorrean, kalkulu gutxi gorabeherakoa
Zer jaten du?
Adults mostly eat perching birds and also lizards, and may sometimes eat other golden lanceheads. After biting prey, it keeps the animal in its mouth instead of releasing it and tracking it, which is thought to suit hunting birds.1
Benetan!Argazkia: Golden lancehead
Golden lancehead. Argazkia: Nayeryouakim. CC BY-SA 4.0, Wikimedia Commons.

Nola ezagutu

  • Pale yellowish-brown body with a series of dorsal blotches that may be triangular or square.1
  • Belly is a uniform pale yellow or cream.1
  • Lance-shaped head that comes to a point at the nose.1
  • No well-defined stripe running behind the eye.1
  • Has a longer tail than its closest relative, B. jararaca.1

Askotan honekin nahasten da: Its closest relative is B. jararaca, which lives in southern Brazil, Paraguay and northern Argentina. The golden lancehead can be told apart from it mainly by its longer tail.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

Its venom is adapted to the animals of the island, mainly reptiles, arthropods and migrating birds, so it works better on these than on mammals. Chemical analysis suggests it is five times as potent as the venom of B. jararaca and is the fastest-acting venom in the genus Bothrops. Its venom becomes more potent as the snake matures. Effects reported in envenomations include swelling, pain, nausea, vomiting, blood blisters, bruising, bleeding into the gut and brain, kidney failure and severe muscle damage.1

Zein arriskutsua da pertsonentzat?

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

No official report of a human bite from this species has been made, because the island is uninhabited. Other lanceheads cause more human deaths than any other group of snakes in North or South America. One researcher reports four human envenomations by this species, three of which were fatal. For lanceheads in general, the mortality rate is 0.5 to 3.0% with treatment and 7.0% without it.1

Kosk egiten badu

  • Eutsi pertsona geldi eta lasai, eduki koska jasotako gorputz-adarra bihotzaren mailan, kendu eraztunak eta gauza estuak, eta joan ospitalera azkar.

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?

AfrikaAsiaEuropaIpar AmerikaHego AmerikaAustralia eta Ozeania

Zein handia da?

Zein luzea da?

Golden lancehead 1,2 m inguru luze (3,9 ft)Txakur bat 1 m inguru (3,3 ft)Heldu bat 1,7 m inguru (5,6 ft)
2,5 etxeko katu muturretik buztanera jarrita bezain luzea7 banana bata bestearen atzetik jarrita bezain luzea100 metro 100 segundotan egin litzake (gizakirik azkarrenak 9,6 behar ditu)

Zein handia da Golden lancehead ZUREKIN alderatuta?

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

Zein azkarra da?

jakin beharrekoa

Datuak

1

Its venom is thought to be five times as potent as that of its closest relative, B. jararaca.1

2

Its venom has evolved to suit the animals of its island, which has no native mammals.1

3

Its tail is longer than that of its closest relative, which may help it climb through trees and catch larger birds from a younger age.1

4

The island's population was estimated at between 2,414 and 2,899 snakes in 2021.1

5

Travel to the island is strictly prohibited by the Brazilian government.1

6

It is found only on Ilha da Queimada Grande, an island of about 43 hectares, and nowhere else in the wild.1

Pozoi-adituentzat

Izen zientifikoa
Bothrops insularis
Taldea
Sugegorri zulodunak
Familia
Viperidae2
Ordena
Squamata
Kontinenteak
Hego Amerika
Kumeak
Like most vipers, it gives birth to live young. The average number of young per pregnancy is 6.5.1
Nola dagoen naturan
Critically Endangered (IUCN Red List)1
Arriskua pertsonentzat
4 / 5: Oso arriskutsua3

Datuak nondik datozen

  1. Golden lancehead (Wikipedia (CC BY-SA 4.0))
  2. Bothrops insularis (iNaturalist): izenak eta sailkapena.
  3. Venom Wiki: arrisku-maila, ohiko tamaina eta abiadura-kalkulua geureak dira. Ikusi nola kalkulatzen ditugun: Nola baloratzen dugun arriskua.

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