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Common lancehead

Bothrops atrox
Sobre el nom: The name fer-de-lance comes from French and means 'head of a lance' or 'spearhead'. The Spanish name barba amarilla means 'yellow beard', after the pale-yellow chin.1
MortalUn dels animals més mortals de la Terra. Si et mossega, demana ajuda de seguida.L'ajuda ràpida i l'antiverí salven la majoria de la gent. Truca de seguida al número d'emergències.
Escurçons de fosseta MossegadesMenja: Carn
Perill per a les persones: MortalUn dels animals més perillosos del món.

The common lancehead is a highly venomous pit viper that lives in the tropical lowlands of northern South America and on the Caribbean island of Trinidad. It is one of the most common pit vipers in its range and is not endangered. Its venom disrupts blood clotting, which makes its bite especially serious.1

Viu a
Tropical lowlands of northern South America east of the Andes, and the Caribbean island of Trinidad1
Amèrica del Sud
Inici
It is mostly found on the ground and prefers wet forests. In Trinidad it lives from sea level up to 940 m. It is also met in coffee and banana plantations, where it hunts rodents and where workers are often bitten.1
Llargada
de 75 cm a 1,6 m (de 2,5 ft a 5,3 ft)1
Velocitat màxima
uns 3,9 km/h (2,4 mph)
A terra, estimació aproximada
Què menja?
It mainly eats small mammals such as rodents and opossums, and birds, but also takes frogs, lizards, smaller snakes, fish, crayfish, centipedes and tarantulas. Larger prey is struck and released, then tracked down by its scent trail.1
De debò!Foto de Common lancehead
Common lancehead. Foto: Alexandre S. Michelotto. CC BY-SA 4.0, iNaturalist.

Com reconèixer-lo

  • Ground colour is olive, brown, tan, grey or yellow, and rarely rusty.1
  • The body pattern is a series of blotches that often fuse into bands. The markings are X-like, which is why some local names refer to the letter X.1
  • The chin is pale yellow, and a dark stripe runs from behind the eye to the corner of the mouth.1
  • The irises are gold or bronze, and the tongue is black.1
  • Adults usually measure 75 to 125 cm in total length and are moderately heavy-bodied.1

Sovint es confon amb: It is often confused with Bothrops asper, which was once included in this species. Most authorities now consider B. asper to be a separate species. This confusion also makes reports of its maximum size unclear.1

Poder del verí

Mossegades

El verí surt pels ullals o les dents quan mossega.

Què fa el seu verí?

Its venom is haemorrhagic, meaning it damages the lining of blood vessels and uses up the substances that allow blood to clot. Symptoms can include severe bleeding, kidney failure, abnormal clotting, blisters and necrosis (death of body tissue). Bleeding in the brain can also occur. Recovery from the clotting problem has been seen 14 to 30 hours after a bite.1

Com de perillós és per a les persones?

Perill per a les persones: MortalUn dels animals més perillosos del món.

The bite is serious and can be fatal. Plantation workers are often bitten. Juvenile snakes have more lethal venom that kills more quickly, and people bitten by young snakes are more likely to develop the clotting problem. In a case reported in the Brazilian Amazon, the patient died of a stroke even after antivenom was given. A Mexican polyvalent antivenom tested against it had no effect on the clotting problem.1

Què fa quan té por?

It is easily agitated, and it can lie camouflaged for hours, nearly undetectable, then strike at high speed.1

Si mossega

  • Mantén la persona quieta i tranquil·la, mantén l'extremitat mossegada a l'altura del cor, treu-li anells i coses que estrenyin i porta-la de pressa a un hospital.

Truca sempre primer al número d'emergències (112, 000, 911). Això són pautes generals de primers auxilis, no consells mèdics. Primers auxilis bàsics

Estigues segur

  • No toquis, atrapis ni molestis mai un animal salvatge, encara que sigui petit i encara que sembli adormit o mort.
  • Deixa-li espai. Si en trobes un, mantén la calma, recula a poc a poc i deixa que segueixi el seu camí.
  • Si te'n mossega un: mantén la calma, no et moguis, truca al número d'emergències (112, 000, 911) o ves de pressa a un hospital. Recorda com era, una foto ajuda.

No va a per tu. Fa servir el verí per caçar o per defensar-se, i prefereix mil vegades amagar-se. Més sobre com estar segur

Que gran és?

Quant fa de llarg?

Common lancehead uns 1,6 m de llarg (5,3 ft)Un gos uns 1 m (3,3 ft)Un adult uns 1,7 m (5,6 ft)
fa de llarg com 3 gats de casa del nas a la cuafa de llarg com 9 plàtans en filapodria recórrer 100 metres en 92 segons (l'humà més ràpid necessita 9,6)

Que gran és Common lancehead comparat amb TU?

Només càlculs al teu navegador. No es desa ni s'envia res enlloc.

Com de ràpid va?

val la pena saber-ho

Dades

1

An enzyme called reptilase, or batroxobin, is taken from its venom and used in modern medical laboratories to measure fibrinogen levels and blood clotting. The enzyme is not affected by heparin.1

2

Although it is mostly terrestrial, it is an excellent swimmer and will climb trees when needed to reach prey.1

3

Females with developing embryos move in and out of sunlight to keep themselves and the embryos at a constant temperature.1

4

Venom yield averages 124 milligrams, but can reach 342 milligrams.1

5

Despite the large-scale destruction of rainforests, it is among the most numerous and common of pit vipers.1

Per a experts en verins

Nom científic
Bothrops atrox
Grup
Escurçons de fosseta
Família
Viperidae2
Ordre
Squamata
Continents
Amèrica del Sud
Cries
It gives birth to live young, up to 80 at once, with an average of about 60 per litter in equatorial regions after a gestation of three to four months.1
Com li va a la natura
Not endangered1
Perill per a les persones
5 / 5: Mortal3

D'on surten les dades

  1. Bothrops atrox (Wikipedia (CC BY-SA 4.0))
  2. Bothrops atrox (iNaturalist): noms i classificació.
  3. Venom Wiki: el nivell de perill, la mida típica i la velocitat estimada són nostres. Mira com els calculem: Com valorem el perill.

Cada dada d'aquesta pàgina té un número que porta a la seva font. Si ens hem equivocat en alguna cosa, perdona, som fans dels animals, no una revista científica. Escriu-nos a [email protected] i ho arreglarem.

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