Africa
Asia
Ulaya
Amereka ya Kumwera
Australia ndi Oceania
Antarctica
Nyanja ya Pacific
Nyanja ya Atlantic
Nyanja ya Indian
Nyanja ya Arctic
Nyanja ya Mediterranean
Nyanja Yofiira
Nyanja ya Caribbean
Nyanja ya Coral
Nyanja ya South China
Nyanja ya Philippine
Nyanja ya Andaman
Nyanja ya Kumpoto (North Sea)
Nyanja ya Timor ndi Arafura
Nyanja ya Bengal
Gulf ya California
Southern black widow
ImalumaThe southern black widow is a venomous spider that lives in North America. Mature females are shiny black with a red hourglass mark on their underside. Its bite can cause pain and other symptoms, but it is rarely fatal to healthy people.1
Mmene ungaizindikirire
- Mature females are shiny black, with a red hourglass-shaped mark on the underside of a very rounded abdomen.1
- Many females have an orange or red patch on the top of the abdomen, just above the spinnerets.1
- Mature females have a body length of 8–13 mm, not counting the legs. Males are 3–6 mm.1
- Juveniles look very different. They have a grey to black abdomen with white stripes across it, spotted with yellow and orange.1
- Males are either purple, or look more like the juveniles.1
Nthawi zambiri imasokonezedwa ndi: It is often confused with the false widows (genus Steatoda) and with the closely related northern (L. variolus) and western (L. hesperus) black widows.1
Mphamvu ya ululu
Ululu umatuluka kudzera m'mano ake ikaluma.
Ululu wake umachita chiyani?
The venom contains alpha-latrotoxin, a neurotoxic venom that attacks the nerves. It causes pain and other symptoms, which are collectively called latrodectism.1
Ndi yoopsa bwanji kwa anthu?
Ngozi kwa anthu: YoopsaKulumidwa kumafuna dokotala. Imfa ndi zosowa kwambiri.Deaths in healthy adults are exceedingly rare. No deaths were reported among 23,409 documented Latrodectus bites in the US from 2000 to 2008, though about 2,000 bites happen each year. Only mature females can bite people.1
Nkhani yabwino: madokotala ali ndi mankhwala (antivenom) kapena chithandizo cha ichi.1
Ikaluma
- Sambitsa polumidwapo ndipo ikapo paketi ya ayezi kuti uchepetse kupweteka. Peza thandizo la dokotala ngati kupweteka kuli kwakukulu, kukufalikira kapena munthuyo sakumva bwino.
Nthawi zonse yamba wayimbira nambala yadzidzidzi (112, 000, 911). Awa ndi malangizo wamba a chithandizo choyamba, osati malangizo a dokotala. Zoyambira za chithandizo choyamba
Khala wotetezeka
- Usakhudze, kugwira kapena kuseweretsa nyama yakuthengo, ngakhale yaing'ono, ndipo ngakhale ikuoneka ngati yagona kapena yafa.
- Ipatse malo. Ukakumana nayo, khala chete, bwerera m'mbuyo pang'onopang'ono ndipo uilole ipite njira yake.
- Ikakuluma: khala chete, usasunthe, imbira nambala yadzidzidzi (112, 000, 911) kapena pita kuchipatala mwachangu. Kumbukira m'mene inkaonekera, chithunzi chimathandiza.
Sikufuna kukuvulaza. Imagwiritsa ntchito ululu wake kugwira chakudya kapena kudziteteza, ndipo imakonda kwambiri kubisala. Zambiri za kukhala wotetezeka
Kuti padziko lapansi?
Ndi yaikulu bwanji?
Ndi yaitali bwanji?
yaing'ono moti ingakhale pa chikhadabo chakoSouthern black widow ndi yaikulu bwanji poyerekeza ndi IWE?
Ndi masamu chabe mu msakatuli wako. Palibe chomwe chimasungidwa kapena kutumizidwa kwina.
Imathamanga bwanji?
Mfundo
In 1933, Allan Blair let himself be bitten by one of these spiders to study its venom in humans and to convince sceptics that it could be dangerous.1
Females will occasionally eat their mates after reproduction.1
Only mature females can bite people. Their hollow, needle-like mouthparts are about 1 mm long, which is long enough to inject venom into people.1
The brown widow (Latrodectus geometricus) competes with black widows for territory. In areas where they share space, it can displace them.1
Males live only about three to four months, while females can live for up to three years.1
Kuthetsa nthano zabodza
Nthano yabodza: A black widow bite is usually fatal.
Zoona: Black widow bites are rarely fatal to healthy people. No deaths from the US species were reported among 23,409 documented bites from 2000 to 2008.1
Za akatswiri a ululu
- Dzina la sayansi
- Latrodectus mactans
- Gulu
- Akangaude
- Banja
- Theridiidae2
- Dongosolo
- Araneae
- Makontinenti
- Amereka ya Kumpoto
- Ana akhanda
- A female can produce four to nine egg sacs in one summer, each holding about 100–400 eggs, which she guards in a silken container.1
- Kutalika kwa moyo
- pafupifupi zaka 31
- Ngozi kwa anthu
- 3 / 5: Yoopsa3
Kumene mfundo zimachokera
- Latrodectus mactans (Wikipedia (CC BY-SA 4.0))
- Latrodectus mactans (iNaturalist): mayina ndi magulu a sayansi.
- Venom Wiki: mlingo wa ngozi, kukula wamba ndi kuyerekeza kwa liwiro ndi zathu. Ona mmene timazipezera: Mmene timayezera ngozi.
Mfundo iliyonse patsamba lino ili ndi nambala yosonyeza kochokera. Ngati talakwitsa, pepani, ndife okonda nyama, osati magazini a sayansi. Tiuze pa [email protected] ndipo tikonza.
Chinkhanira chili ndi njala! Venom Wiki ndi ntchito ya munthu mmodzi: yaulere, yopanda zotsatsa ndi zokutsatira. Mphatso yaing'ono imathandiza kuti ikhalebe pa intaneti.Dyetsa chinkhaniraZina za gulu lomwelo: Akangaude
Brown recluse
Northern black widow
Western black widow
Bold jumping spider
Golden silk orb-weaver
Central American wandering spider
Imakhalanso ku: Amereka ya Kumpoto
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