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Eserese katuun nke South American rattlesnake
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South American rattlesnake

Crotalus durissus
Nwere ike igbu mmadụỌ nwere ike igbu gị ma ọ bụrụ na enweghị ọgwụgwọ. Ọ bụrụ na ọ tara gị, chọọ enyemaka ngwa ngwa.
Rattlesnake ỊtaNri ya: Anụ
Ihe ize ndụ nye mmadụ: Ọ dị egwu nke ukwuuỌ nwere ike igbu onye na-enwetaghị ọgwụgwọ.

The South American rattlesnake is a large, highly venomous pit viper. It lives across much of South America, except the Andes Mountains, and also on some Caribbean islands. It is the most widely spread member of its genus, which is why it matters to people in so many places.1

Ebe obibi
South America except the Andes, including Colombia, Venezuela, Brazil, Argentina and Paraguay; also some Caribbean islands, including Aruba1
Ndịda Amerika
Ụlọ
It prefers savanna and semi-arid areas, and is found in several types of scrub and seasonal forest. In the Chaco region of Paraguay, it lives in the drier, sandier areas.1
Ogologo
1.9 m (6.2 ft)1
Ọsọ kacha elu
ihe dị ka 4 km/h (2.5 mph)
N'elu ala, nchepụta
Gịnị ka ọ na-eri?
It eats mainly rodents, which are abundant and available all year in most of its range. In some regions it also eats lizards of the Teiidae family.1
N'ezie!Foto South American rattlesnake
South American rattlesnake. Foto: Leandro Avelar. CC BY-SA 4.0, Wikimedia Commons.

Otú ị ga-esi mata ya

  • Two distinct stripes start at the base of the head, and the colour between the lines is lighter than the stripes.1
  • Body colour and pattern vary, but most have 18 to 32 dark diamond or rhombic spots along the back.1
  • The head has a dark brown bar at the top and a dark band behind the eye.1
  • The tail is usually grey, with dark, faint crossed bands.1
  • The belly is white or yellowish with light grey spots, getting darker towards the tail.1

Ike nsị

Ịta

Nsị na-esi n'eze nsị ya ma ọ bụ eze ya apụta mgbe ọ na-ata.

Gịnị ka nsị ọ na-agba na-eme?

Its venom contains neurotoxins, which attack the nerves, and myotoxins, which damage muscle. These cause progressive paralysis, including impaired or lost vision, hearing problems, drooping eyelids and weakness in the neck muscles, which can become so limp that the head appears broken. Breathing can eventually be stopped by paralysis, and the muscle damage can cause dark urine.1

Kedu otú o si dị egwu nye mmadụ?

Ihe ize ndụ nye mmadụ: Ọ dị egwu nke ukwuuỌ nwere ike igbu onye na-enwetaghị ọgwụgwọ.

It is a highly venomous snake. The mortality rate is 72% for bite cases without specific serum treatment, and 11% for cases with it. Acute kidney failure is considered the main cause of death.1

Ozi ọma: ndị dọkịta nwere ọgwụ (antivenom) ma ọ bụ ọgwụgwọ maka nke a.1

Gịnị ka ọ na-eme mgbe ụjọ tụrụ ya?

It is highly alert and gives little warning before it strikes, but it is seldom aggressive towards people.1

Ọ bụrụ na ọ tara

  • Specific serum treatment (antivenom) greatly lowers the death rate, so a bite needs urgent hospital care to give it.1
  • Mee ka onye ahụ ghara imegharị ahụ, dịkwa jụụ, debe aka ma ọ bụ ụkwụ ahụ ọ tara n'ogo obi, wepụ mgbanaka na ihe ndị kekọrọ ahụ ike, kpọga ya ụlọ ọgwụ ngwa ngwa.

Na-ebu ụzọ kpọọ nọmba mberede gị mgbe niile (112, 000, 911). Nke a bụ ndụmọdụ enyemaka mbụ n'ozuzu, ọ bụghị ndụmọdụ ọgwụ. Isi ihe enyemaka mbụ

Nọrọ na nchekwa

  • Emetụla anụ ọhịa aka, ejidela ya, emekwala ya ihe ọjọọ, ọbụna obere, ọbụna ma ọ dị ka ọ na-ehi ụra ma ọ bụ nwụọ anwụ.
  • Nye ya ohere. Ọ bụrụ na ị zutere otu, dị jụụ, laghachi azụ nwayọ, hapụ ya ka ọ gaa ụzọ ya.
  • Ọ bụrụ na otu tara gị: dị jụụ, emegharịla ahụ, kpọọ nọmba mberede gị (112, 000, 911) ma ọ bụ gaa ụlọ ọgwụ ngwa ngwa. Cheta ka o si dị, foto na-enye aka.

Ọ naghị achụ gị. Ọ na-eji nsị ya ejide nri ma ọ bụ chebe onwe ya, ọ ga-akakwa mma n'anya ya ịzo onwe ya. Ihe ndị ọzọ gbasara ịnọ na nchekwa

Ebee n'ụwa?

AfrịkaEshiaYuropUgwu AmerikaNdịda AmerikaỌstrelia na Oshenia

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

South American rattlesnake ogologo ya dị ihe dị ka 1.9 m (6.2 ft)Igwe okenye ihe dị ka 1.8 m (5.9 ft)Ụgbọ ala ihe dị ka 4.5 m (15 ft)
dị ogologo dị ka nwamba ụlọ 4 site n'imi ruo n'ọdụdị ogologo dị ka unere 11 a tọgbọrọ n'ahịrịnwere ike ịgba ọsọ mita 100 n'ime sekọnd 90 (mmadụ kacha ọsọ chọrọ 9,6)

Kedu otú South American rattlesnake si hà ma e jiri ya tụnyere GỊ?

Naanị mgbakọ na mwepụ n'ime browser gị. Ọ dịghị ihe echekwara ma ọ bụ ezigara ebe ọ bụla.

Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

The lethal dose for a 60 kg human is possibly 18 mg, while a snake's venom yield is 20 to 100 mg.1

2

Crotoxin, a neurotoxin, makes up about 48.5% to 89.4% of the venom proteins in one subspecies, though it is typically 60% to 70%.1

3

It is the most widely distributed member of its genus, and seven subspecies are currently recognised.1

4

It is more active at dusk and in the early hours of the morning.1

5

Males compete for access to females from the end of summer, with mating in autumn and the young born the following spring or summer.1

Onye na-ekpughe akụkọ ụgha

Akụkọ ụgha: Yellow venom means the bite damages blood and tissue, and white venom means it attacks the nerves.

Eziokwu: Venom colour does not determine the type. Colour depends on pigments in the venom, not on whether it is haemorrhagic or neurotoxic.1

Maka ndị ọkachamara nsị

Aha sayensị
Crotalus durissus
Otu
Rattlesnake
Ezinụlọ
Viperidae2
Usoro
Squamata
Kọntinent dị iche iche
Ndịda Amerika
Ụmụ ọhụrụ
It gives birth to live young (ovoviviparous), usually four to eight at a time. In Roraima, Brazil, gestation has been reported to last five months, with up to 14 young.1
Ihe ize ndụ nye mmadụ
4 / 5: Ọ dị egwu nke ukwuu3

Ebe eziokwu ndị a si

  1. Crotalus durissus (Wikipedia (CC BY-SA 4.0))
  2. Crotalus durissus (iNaturalist): aha na nhazi ọkwa.
  3. Venom Wiki: ọkwa ihe ize ndụ, nha nkịtị na nchepụta ọsọ bụ nke anyị. Lee otú anyị si achọpụta ha: Otú anyị si atụ ihe ize ndụ.

Eziokwu ọ bụla dị na peeji a nwere nọmba na-egosi ebe o si. Ọ bụrụ na anyị mehiere ihe, ndo, anyị bụ ndị hụrụ anụmanụ n'anya, ọ bụghị akwụkwọ akụkọ sayensị. Gwa anyị na [email protected], anyị ga-edozi ya.

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Nye akpị nriite onyinye, na-eme ka ọ bụrụ n'efu