Nọmba 0663 n'ime 1 402

Brazilian wandering spider

Phoneutria nigriventer

Nwere ike igbu mmadụỌ nwere ike igbu gị ma ọ bụrụ na enweghị ọgwụgwọ. Ọ bụrụ na ọ tara gị, chọọ enyemaka ngwa ngwa.

ỊtaNri ya: Anụ

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

The Brazilian wandering spider is a large, hairy spider whose bite is medically significant. It lives in parts of South America, including Brazil, Uruguay, Paraguay and Argentina, and it is often found near homes. Its bite can cause severe pain and dangerous effects on the heart and breathing.1

Ebe obibi

Southern Cone of South America: Brazil, Uruguay, Paraguay and Argentina1

Ndịda Amerika

Ụlọ

It lives in banana trees, foliage and urban areas, and is mainly found inside houses. During the day it hides under logs or in crevices.1

Ogologo

5 cm (2 in)1

Ọsọ kacha elu

ihe dị ka 2.1 km/h (1.3 mph)

N'elu ala, nchepụta

Gịnị ka ọ na-eri?

It eats crickets, katydids, mantids, tree frogs, lizards and bats. It hunts by ambush at night rather than using a web.1

Foto Brazilian wandering spider — Brazilian wandering spider. Foto: Techuser. CC BY-SA 4.0, iNaturalist.

Otú ị ga-esi mata ya

A large spider with a body up to 5 cm long1
Legs can span up to 15 cm in larger individuals1
Body covered in thick brown hair1
Hunts at night and catches prey by ambush rather than in a web1
When threatened, raises its first two pairs of legs as a warning1

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?

The venom contains neurotoxic peptides, which attack the nerves. These act as calcium channel blockers that disrupt how nerve cells send signals. The venom also causes intense pain and inflammation. At deadly concentrations it causes loss of muscle control, breathing problems, paralysis and eventual asphyxiation. Other symptoms reported include priapism, a rapid heartbeat, irregular heartbeat, cardiogenic shock, fluid in the lungs and convulsions.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.

Its bite can be life-threatening, and several deaths are documented. Between 1925 and 1945, 415 bites by this species were recorded, and 400 of those people needed antivenom. The spider can give a dry bite with no venom, or a bite with only a small dose.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?

When threatened, it raises its first two pairs of legs as a warning.1

Ọ bụrụ na ọ tara

In the documented cases, victims were treated in hospital with anaesthetics, tetanus prophylaxis, antivenom and fluid replacement. Recovery could take about 36 hours after a bite.1
Saa ebe ọ tara, tinye akpa ice n'elu ya maka mgbu ahụ. Chọọ enyemaka ọgwụ ma ọ bụrụ na mgbu ahụ siri ike, gbasaa, ma ọ bụ na ahụ adịghị onye ahụ mma.

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?

Afrịka Eshia Yurop Ugwu Amerika Ndịda Amerika Ọstrelia na Oshenia

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

dị mkpụmkpụ karịa obere mkpịsị aka gịnwere ike ịgba ọsọ mita 100 n'ime sekọnd 170 (mmadụ kacha ọsọ chọrọ 9,6)

Kedu otú Brazilian wandering spider 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?

Mbe ihe dị ka 0.3 km/h (0.19 mph)

Brazilian wandering spider ihe dị ka 2.1 km/h (1.3 mph)

Mmadụ na-aga ije ihe dị ka 5 km/h (3.1 mph)

ọ dị mma ịmara

Eziokwu

A venom component called Tx2-6 is being studied for use in treatments for erectile dysfunction.1

Humans may be about ten times more sensitive to the venom than mice.1

Females may attack males after mating.1

Males perform a dance to attract females, and males may fight each other during courtship.1

Females can store sperm in a separate chamber until they are ready to fertilise their eggs.1

The average venom yield is 1.25 mg, and 0.4 mg in winter.1

Maka ndị ọkachamara nsị

Aha sayensị: Phoneutria nigriventer
Otu: Ududo
Ezinụlọ: Ctenidae2
Usoro: Araneae
Kọntinent dị iche iche: Ndịda Amerika
Ụmụ ọhụrụ: Females may lay about 1,000 eggs, which are kept in a silk sac.1
Ihe ize ndụ nye mmadụ: 4 / 5: Ọ dị egwu nke ukwuu3

Ebe eziokwu ndị a si

Phoneutria nigriventer (Wikipedia (CC BY-SA 4.0))
Phoneutria nigriventer (iNaturalist): aha na nhazi ọkwa.
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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