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Debuxo de Brown tree snake
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Brown tree snake

Boiga irregularis
Sobre o nome: Its genus, Boiga, is a group of about twenty-five snakes called 'cat-eyed' snakes because they have vertical pupils.1
Só doeDoe, pero non che fará un dano grave.
Serpes con cairos traseiros MordeCome: Carne
Perigo para as persoas: DolorosoPode doer moito, pero case nunca é grave.

The brown tree snake is a slender, night-active snake that climbs well and hunts in trees and on the ground. It lives in coastal northern and eastern Australia, eastern Indonesia, Papua New Guinea and nearby islands. It is famous for harming wildlife on the island of Guam, where it was introduced by accident.1

Vive en
Coastal eastern and northern Australia, eastern Indonesia, Papua New Guinea and islands of northwestern Melanesia. Introduced to Guam.1
Asia, Australia e Oceanía
Inicio
It lives in forests, grasslands and sparsely forested areas, and is common in places disturbed by people. It hides during the day in palm crowns, hollow logs, rock crevices, caves and the dark corners of thatched houses near the roof. In Darwin, Australia, it is most often met in suburban areas during the wet season from January to March.1
Lonxitude
1 m a 2 m (3,3 ft a 6,6 ft)1
Velocidade máxima
uns 6 km/h (3,7 mph)
En terra, estimación aproximada
Que come?
It eats birds, lizards, bats, mice, other small rodents and frogs, as well as many invertebrates and their eggs. It hunts using both sight and chemical cues. Often it wraps its body around its prey like a constrictor to hold it still while it eats.1
De verdade!Foto de Brown tree snake
Brown tree snake. Foto: Pavel Kirillov from St.Petersburg, Russia. CC BY-SA 2.0, Wikimedia Commons.

Como recoñecelo

  • Slender body, with a large head compared to its body1
  • Usually brown, but can be yellowish, green or beige1
  • Some individuals have red, saddle-shaped blotches1
  • Vertical pupils, like a cat's eyes1
  • Active at night, and usually found in trees1

Poder da pezoña

Morde

A pezoña sae polos seus cairos ou dentes cando morde.

Que fai a súa pezoña?

It has two small, grooved fangs at the back of the mouth, so venom flows into the bite slowly rather than being injected in one go. The venom is weakly neurotoxic, meaning it affects the nerves, and may also damage cells locally. Its effects are trivial for adults, and it is mainly used to subdue lizards.1

Que perigoso é para as persoas?

Perigo para as persoas: DolorosoPode doer moito, pero case nunca é grave.

The snake is considered aggressive when threatened but not dangerous to adult humans. Serious medical consequences have been limited to children, who are more affected because of their low body mass. On Guam, it has caused widespread power outages, pet losses and emotional distress to residents.1

Que fai cando ten medo?

When threatened it is highly aggressive, lunging and striking at the attacker repeatedly.1

Se morde

  • Lava a mordedura, mantén a persoa tranquila e busca axuda médica. Algunhas especies (como a boomslang) poden ser mortais horas despois.

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 Oceanía

Que tamaño ten?

Canto mide?

Brown tree snake mide uns 2 m (6,6 ft)A bicicleta dun adulto uns 1,8 m (5,9 ft)Un coche uns 4,5 m (15 ft)
mide coma 4 gatos domésticos do fociño á colamide coma 11 bananas postas en filapodería percorrer 100 metros en 60 segundos (o humano máis rápido precisa 9,6)

Que tamaño ten Brown tree snake 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

Snakes on Guam have been seen moving up large smooth cylinders using a method called 'lasso locomotion', which had not been recorded in snakes before. It is tiring, so they move slowly and stop often.1

2

On Guam, where prey is plentiful and there are few predators, the snakes have grown to 3 m, much longer than their typical 1 to 2 m in their native range.1

3

Shortly after World War II, the snake reached Guam by accident, probably as a stowaway in ship cargo or in aircraft landing gear. Its numbers then grew to unprecedented levels.1

4

Trained dogs are used on Guam to find and remove snakes before cargo and transport vessels leave the island.1

5

Female brown tree snakes have been seen performing courtship behaviours normally used by males, such as tongue-flicking and head-jerking.1

6

Brown tree snakes can survive for long periods without food.1

Desmontamitos

Mito: The brown tree snake is a deadly snake that is dangerous to adults.

Verdade: It is not considered dangerous to adult humans. Its venom is weak and serious effects have mainly been seen in young children.1

Para expertos en pezoñas

Nome científico
Boiga irregularis
Grupo
Serpes con cairos traseiros
Familia
Colubridae2
Orde
Squamata
Continentes
Asia, Australia e Oceanía
Crías
The female lays 4 to 12 oblong eggs with leathery shells and may lay up to two clutches a year. The eggs hatch about 90 days later.1
Perigo para as persoas
2 / 5: Doloroso3

De onde veñen os datos

  1. Brown tree snake (Wikipedia (CC BY-SA 4.0))
  2. Boiga irregularis (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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