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Debuxo de Mexican beaded lizard
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Mexican beaded lizard

Heloderma horridum
Sobre o nome: The genus name Heloderma means "studded skin" in Ancient Greek, and the species name horridum is Latin for "rough" or "rude".1
Precisa un médicoRaramente mortal, pero unha mordedura precisa un médico.
Lagartos pezoñentos MordeCome: Carne
Perigo para as persoas: GraveUnha mordedura precisa un médico. As mortes son moi raras.

The Mexican beaded lizard is a venomous lizard found mainly in Mexico and southern Guatemala. It is one of only a few lizards known to have evolved a true venom delivery system. Its venom is also being studied for possible medicines.1

Vive en
Mexico, from Sonora to Oaxaca, and parts of southern Guatemala (the Pacific and Atlantic drainages).1
América do Norte
Inicio
It lives mainly in deserts, tropical deciduous forests and thorn scrub, and also in pine-oak forests, from sea level up to 1,500 m. In the wild it is active only from April to mid-November, spending about an hour a day above ground.1
Lonxitude
57 cm a 91 cm (1,9 ft a 3 ft)1
Peso
4 kg (8,8 lb)1
Velocidade máxima
uns 2,5 km/h (1,6 mph)
En terra, estimación aproximada
Que come?
It is a specialised nest predator that feeds mainly on bird and reptile eggs. It climbs deciduous trees to search for prey and sometimes eats small birds, mammals, frogs, lizards and insects.1
De verdade!Foto de Mexican beaded lizard
Mexican beaded lizard. Foto: Francisco Farriols Sarabia. CC BY 4.0, iNaturalist.

Como recoñecelo

  • Black with yellowish spots or bands.1
  • Small, beadlike scales that do not overlap, which give it its name.1
  • Stocky body with a broad head.1
  • Short tail that stores fat, and does not regrow if broken.1
  • Adults are 57 to 91 cm long.1

Adoita confundirse con: The Gila monster is its closest relative and looks similar. The Mexican beaded lizard is larger, and its colours are duller, black with yellowish bands.1

Poder da pezoña

Morde

A pezoña sae polos seus cairos ou dentes cando morde.

Que fai a súa pezoña?

Its venom is a weak hemotoxin, meaning it attacks blood and tissue. It can cause respiratory failure, which is when breathing fails. In humans, bites cause severe pain that can spread well beyond the bite and last up to 24 hours, along with swelling, weakness, sweating and a rapid drop in blood pressure.1

Que perigoso é para as persoas?

Perigo para as persoas: GraveUnha mordedura precisa un médico. As mortes son moi raras.

Human deaths from its bites are rare. Eight human bites were documented in the past century, and almost all happened when people prodded captive lizards with a finger or bare foot.1

Se morde

  • Lava a ferida, mantén a persoa tranquila e busca axuda médica.

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?

Mexican beaded lizard mide uns 91 cm (3 ft)Un gato doméstico uns 50 cm (1,6 ft)Un can uns 1 m (3,3 ft)

Canto pesa?

pesa coma 1 gatos domésticos
mide coma 2 gatos domésticos do fociño á colamide coma 5 bananas postas en filapesa máis ou menos coma un gato domésticopodería percorrer 100 metros en 140 segundos (o humano máis rápido precisa 9,6)

Que tamaño ten Mexican beaded lizard 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

It is one of only two venomous beaded lizard species, and the only lizards known to have evolved an overt venom delivery system, along with the rest of its genus.1

2

Some compounds in its venom are being studied for possible treatments of diabetes, Alzheimer's disease and HIV. One of them, exendin-3, is the basis of the drug exenatide.1

3

The beaded lizard is immune to the effects of its own venom.1

4

It is larger than the Gila monster, with an average adult weight of 800 g, and large specimens exceed 2,000 g.1

5

Beaded lizards have forked pink tongues that they use to smell, with the help of a Jacobson's organ.1

6

Young beaded lizards are rarely seen, as they are believed to spend much of their early lives underground.1

Desmontamitos

Mito: The beaded lizard is more venomous than a rattlesnake, can cause lightning strikes with its tail, or can make a pregnant woman miscarry by looking at her.

Verdade: These beliefs are incorrect. Its venom is weak, and human deaths are rare.1

Para expertos en pezoñas

Nome científico
Heloderma horridum
Grupo
Lagartos pezoñentos
Familia
Helodermatidae2
Orde
Squamata
Continentes
América do Norte
Crías
It lays clutches of 2 to 30 eggs in late summer or early fall, and the eggs hatch the following spring or summer.1
Como lle vai na natureza
Threatened (Mexican law, category A). Listed on Appendix II of CITES.1
Perigo para as persoas
3 / 5: Grave3

De onde veñen os datos

  1. Mexican beaded lizard (Wikipedia (CC BY-SA 4.0))
  2. Heloderma horridum (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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