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Àwòrán kátúùnù Golden lancehead
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Golden lancehead

Bothrops insularis
Nípa orúkọ náà: 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
Ó lè paniÓ lè pa ọ́ bí kò bá sí ìtọ́jú. Bí ó bá bù ọ́ jẹ, wá ìrànlọ́wọ́ kíákíá.
Pit viper ÌbùjẹOúnjẹ rẹ̀: Ẹran
Ewu fún ènìyàn: Ó léwu gan-anÓ lè pa ènìyàn tí kò bá rí ìtọ́jú.

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

Ó ń gbé ní
Ilha da Queimada Grande (Snake Island), off the coast of São Paulo state, Brazil. Found nowhere else in the wild.1
Gúúsù Amẹ́ríkà
Ilé
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
Gígùn
70 cm sí 1.2 m (2.3 ft sí 3.9 ft)1
Ìyára gíga jùlọ
nǹkan bí 3.5 km/h (2.2 mph)
Lórí ilẹ̀, àfojúbù
Kí ni ó máa ń jẹ?
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
Ní tòótọ́!Fọ́tò Golden lancehead
Golden lancehead. Fọ́tò: Nayeryouakim. CC BY-SA 4.0, Wikimedia Commons.

Bí o ṣe lè dá a mọ̀

  • 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

A sábà máa ń ṣì í mọ̀ sí: 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

Agbára oró

Ìbùjẹ

Oró ń jáde láti inú eyín oró tàbí eyín rẹ̀ nígbà tí ó bá bùjẹ.

Kí ni oró rẹ̀ máa ń ṣe?

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

Báwo ló ṣe léwu tó fún ènìyàn?

Ewu fún ènìyàn: Ó léwu gan-anÓ lè pa ènìyàn tí kò bá rí ìtọ́jú.

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

Bí ó bá bùjẹ

  • Jẹ́ kí ẹni náà wà láìmira kí ó sì farabalẹ̀, jẹ́ kí apá tàbí ẹsẹ̀ tí ó bù jẹ wà ní ìpele ọkàn, yọ òrùka àti àwọn nǹkan tó há, kí ẹ sì lọ sí ilé ìwòsàn kíákíá.

Máa kọ́kọ́ pe nọ́ńbà pàjáwìrì rẹ nígbà gbogbo (112, 000, 911). Èyí jẹ́ ìtọ́sọ́nà ìtọ́jú àkọ́kọ́ gbogbogbò, kì í ṣe ìmọ̀ràn ìṣègùn. Ìpìlẹ̀ ìtọ́jú àkọ́kọ́

Wà láìléwu

  • Má ṣe fọwọ́ kan, mú tàbí yọ ẹranko igbó lẹ́nu láéláé, kódà bí ó bá kéré, kódà bí ó bá dà bí ẹni pé ó ń sùn tàbí ó ti kú.
  • Fún un ní àyè. Bí o bá pàdé ọ̀kan, farabalẹ̀, sẹ́yìn díẹ̀díẹ̀ kí o sì jẹ́ kí ó máa bá ọ̀nà rẹ̀ lọ.
  • Bí ọ̀kan bá bù ọ́ jẹ: farabalẹ̀, má ṣe mira, pe nọ́ńbà pàjáwìrì rẹ (112, 000, 911) tàbí lọ sí ilé ìwòsàn kíákíá. Rántí bí ó ṣe rí, fọ́tò máa ń ṣèrànwọ́.

Kò wá ọ kiri láti ṣe ọ́ léṣe. Ó ń lo oró rẹ̀ láti mú oúnjẹ tàbí láti dáàbò bo ara rẹ̀, ó sì fẹ́ràn láti farapamọ́ jù. Sí i nípa wíwà láìléwu

Níbo ní ayé?

ÁfíríkàÉṣíàYúróòpùÀríwá Amẹ́ríkàGúúsù Amẹ́ríkàỌsirélíà àti Òṣéáníà

Báwo ló ṣe tóbi tó?

Báwo ló ṣe gùn tó?

Golden lancehead gígùn rẹ̀ tó nǹkan bí 1.2 m (3.9 ft)Ajá kan nǹkan bí 1 m (3.3 ft)Àgbàlagbà kan nǹkan bí 1.7 m (5.6 ft)
ó gùn tó ológbò ilé 2.5 láti imú dé ìrùó gùn tó ọ̀gẹ̀dẹ̀ 7 tí a tò tẹ̀léralè sáré mítà 100 ní ìṣẹ́jú-àáyá 100 (ènìyàn tó yára jùlọ nílò 9.6)

Báwo ni Golden lancehead ṣe tóbi tó tí a bá fi wé ÌWỌ?

Ìṣirò nìkan nínú bráwúsà rẹ. A kò fi ohunkóhun pamọ́, a kò sì fi ránṣẹ́ sí ibikíbi.

Báwo ló ṣe yára tó?

ó yẹ ní mímọ̀

Òtítọ́

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

Fún àwọn amòye oró

Orúkọ sáyẹ́ǹsì
Bothrops insularis
Ẹgbẹ́
Pit viper
Ìdílé
Viperidae2
Ètò
Squamata
Àwọn kọ́ńtínẹ́ńtì
Gúúsù Amẹ́ríkà
Àwọn ọmọ
Like most vipers, it gives birth to live young. The average number of young per pregnancy is 6.5.1
Bí ó ṣe ń ṣe nínú igbó
Critically Endangered (IUCN Red List)1
Ewu fún ènìyàn
4 / 5: Ó léwu gan-an3

Ibi tí àwọn òtítọ́ ti wá

  1. Golden lancehead (Wikipedia (CC BY-SA 4.0))
  2. Bothrops insularis (iNaturalist): orúkọ àti ìpínsísọ̀rí.
  3. Venom Wiki: ìpele ewu, ìtóbi déédé àti àfojúbù ìyára jẹ́ tiwa. Wo bí a ṣe ń ṣírò wọn: Bí a ṣe ń díwọ̀n ewu.

Gbogbo òtítọ́ ojú-ìwé yìí ní nọ́ńbà tó tọ́ka sí orísun rẹ̀. Bí a bá ṣe àṣìṣe, má bínú, olólùfẹ́ ẹranko ni wá, kì í ṣe ìwé ìròyìn sáyẹ́ǹsì. Sọ fún wa ní [email protected] a ó sì tún un ṣe.

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