Venom Wiki / Todas as criaturas / Serpes de cascabel

N.º 0526 de 1 402

Black-tailed rattlesnake

Crotalus molossus

Precisa un médicoRaramente mortal, pero unha mordedura precisa un médico.

Serpes de cascabel

MordeCome: Carne

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

The black-tailed rattlesnake is a venomous pit viper that lives in the south-west of the United States and in Mexico. It is known as one of the calmest rattlesnakes, and it relies on camouflage rather than confrontation.1

Vive en

South-western United States (Arizona, New Mexico, west and central Texas) and Mexico south to Oaxaca, plus some Gulf of California islands1

América do Norte

Inicio

It lives in grasslands, desert areas, and rocky and mountainous areas, as well as high-altitude forests. It has been recorded at elevations up to 2930 m. It is a primarily ground-dwelling species, but it is an able climber and an expert swimmer.1

Lonxitude

76 cm a 1,1 m (2,5 ft a 3,5 ft)1

Velocidade máxima

uns 3,6 km/h (2,2 mph)

En terra, estimación aproximada

Que come?

Its main food sources are rodents, other small mammals, birds, and small reptiles such as small lizards.1

Foto de Black-tailed rattlesnake — Black-tailed rattlesnake. Foto: Caudatejake. CC BY-SA 4.0, Wikimedia Commons.

Como recoñecelo

Body colour ranges from yellows and olive greens to browns and black.1
The tail scales are entirely black, which gives the species its name.1
Often has a black band that runs across the eyes and down to the corners of the mouth, forming a facial 'mask'.1
Has a rattle made of keratin at the end of the tail.1

Poder da pezoña

Morde

A pezoña sae polos seus cairos ou dentes cando morde.

Que fai a súa pezoña?

Its venom is primarily hemotoxic, meaning it mainly acts on the blood and surrounding tissue, as with most crotalids (pit vipers). It is only about two-thirds as toxic as western diamondback venom. Because the venom is weaker, the snake has larger venom glands than most rattlesnakes in its region and injects large quantities into prey.1

Que perigoso é para as persoas?

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

Bites are fairly rare, because the snake is considered one of the most docile rattlesnakes. The venom is generally not fatal to humans.1

Boas novas: os médicos teñen un medicamento (antiveleno) ou un tratamento para isto.1

Que fai cando ten medo?

It normally tries to slither away when confronted, but it will rattle when cornered, and it relies mostly on camouflage to avoid discovery.1

Se morde

CroFab antivenom is often used to treat bites from this snake.1
Mantén a persoa quieta e tranquila, mantén o membro mordido á altura do corazón, quítalle aneis e cousas apertadas e vai rápido a un hospital.

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?

África Asia Europa América do Norte América do Sur Australia e Oceanía

Que tamaño ten?

Canto mide?

mide coma 2 gatos domésticos do fociño á colamide coma 6 bananas postas en filapodería percorrer 100 metros en 100 segundos (o humano máis rápido precisa 9,6)

Que tamaño ten Black-tailed rattlesnake comparado CONTIGO?

Só son contas no teu navegador. Non se garda nin se envía nada a ningures.

Que rápido é?

Unha tartaruga uns 0,3 km/h (0,19 mph)

Black-tailed rattlesnake uns 3,6 km/h (2,2 mph)

Unha persoa camiñando uns 5 km/h (3,1 mph)

paga a pena sabelo

Datos

Its venom glands are larger than those of most rattlesnakes in its region, which compensates for its weaker venom.1

It is considered one of the most docile rattlesnakes because of its calm demeanour and curious nature.1

In the spring and fall it is mainly active during the day, but in summer it becomes nocturnal to avoid the heat.1

In winter it hibernates in dens made and abandoned by other animals, often sharing them with other snake species.1

Its lifespan averages 15 to 20 years.1

Desmontamitos

Mito: The number of segments in a rattle shows how old a rattlesnake is.

Verdade: Each time the snake sheds its skin, a new segment is added. Snakes can shed several times a year, and the rattle is fragile and can break, so its length is not an accurate guide to age unless the tip (terminal button) is intact.1

Para expertos en pezoñas

Nome científico: Crotalus molossus
Grupo: Serpes de cascabel
Familia: Viperidae2
Orde: Squamata
Continentes: América do Norte
Crías: The female gives birth to live young in the summer. Litters can have as many as 10 to 12 young but usually average four to six.1
Como lle vai na natureza: Least Concern1
Perigo para as persoas: 3 / 5: Grave3

De onde veñen os datos

Black-tailed rattlesnake (Wikipedia (CC BY-SA 4.0))
Crotalus molossus (iNaturalist): nomes e clasificación.
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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