Rough-skinned newt
Botlhole mo letlalong la yoneE botlhole go e ama kgotsa go e ja, ga e tsenye botlholeThe rough-skinned newt is a small, stocky amphibian from the Pacific Northwest of North America. Its skin gives off one of the strongest toxins of any newt, so it is a creature to admire from a distance and never handle. Its toxin is also linked to a famous fight between newts and garter snakes.1

Tsela ya go e lemoga
- Stocky body with a rounded snout.1
- Top ranges from light brown to olive or brownish-black.1
- Underside, including the head, legs and tail, is orange to yellow.1
- Skin is granular, but males are smooth-skinned during the breeding season.1
- Adults are 11 to 18 cm long overall, including the tail.1
Gantsi e tlhakanngwa le: The California newt (Taricha torosa) looks similar. The rough-skinned newt has smaller eyes, yellow irises, V-shaped tooth patterns and uniformly dark eyelids. During breeding season, males have large swollen vent lobes and cornified toe pads, which separate them from females.1
Maatla a botlhole
Letlalo la yone le botlhole. Go kotsi go e ama, go e latswa kgotsa go e ja.
Botlhole jwa yone (jwa go e ama kgotsa go e ja) bo dira eng?
This animal is poisonous rather than venomous, so it does not bite or sting. Its skin produces tetrodotoxin (TTX), a neurotoxin that attacks the nerves. It blocks the sodium channels that nerves need to send signals. This can cause paralysis and death by asphyxiation, which means the person cannot breathe.1
E kotsi go le kae go batho?
Kotsi go batho: E kotsi thataE ka bolaya motho yo o sa alafiweng.The toxin is mainly dangerous if the newt is eaten. Some people have had skin irritation after handling the newt, especially if they touch their eyes without washing their hands first. In 1979, a 29-year-old man from Oregon died after eating one. Some newts make enough toxin to kill several adult humans.1
E dira eng fa e tshogile?
It gives off an acrid smell that warns animals to stay away.1
Fa mongwe a e amile kgotsa a e jele
- Fa mongwe a amile e nngwe: tlhatswa diatla sentle mme o se ka wa ama matlho kgotsa molomo. Fa ngwana kgotsa phologolo ya gae e latswitse kgotsa e jele e nngwe: leletsa senthara ya botlhole kgotsa nomoro ya tshoganyetso.
Ka gale leletsa nomoro ya gago ya tshoganyetso pele (112, 000, 911). Se ke kaelo e e akaretsang ya thuso ya ntlha, ga se kgakololo ya bongaka. Motheo wa thuso ya ntlha
Nna o babalesegile
- O se ka wa ama, wa tshwara kgotsa wa tshwenya phologolo ya naga, le fa e le e nnye, le fa e lebega e robetse kgotsa e sule.
- E fe sebaka. Fa o kopana le yone, ritibala, boela morago ka bonya mme o e tlogele e tsamaye ka tsela ya yone.
- Fa o e amile kgotsa o e jele: o se ka wa gotlha matlho kgotsa molomo wa gago, tlhatswa diatla mme o batle thuso ya bongaka.
Ga e go batle. Botlhole jwa yone bo teng fela gore sepe se se ka se e je. Go le gontsi ka go nna o babalesegile
Kae mo lefatsheng?
E kgolo go le kae?
E telele go le kae?
boleele jo bo lekanang le diboloko tsa go aga tsa ditshamekisi di le 6 mo molengRough-skinned newt e kgolo go le kae fa e bapisiwa le WENA?
Ke dipalo fela mo sefetleng sa gago (browser). Ga go sepe se se bolokwang kgotsa se se romelwang gope.
E bonako go le kae?
Dintlha
Some common garter snakes can eat rough-skinned newts and survive. They are the only known animals today able to do this.1
A garter snake tests a newt's toxin level by partly swallowing it, then either swallows it fully or lets it go.1
Newts can detect the chemical signature of a snake that has digested one of their kind, and they move away from it.1
The toxin is made by the newt's skin microbiome, meaning the bacteria living on its skin.1
The newt and the garter snake are an example of an evolutionary arms race. Each change in one species drives change in the other.1
The toxin also appears in pufferfish and other marine animals, which share the same nerve-blocking effect.1
Ya baitseanape ba botlhole
- Leina la saense
- Taricha granulosa
- Setlhopha
- Digwagwa tsa botlhole, digwagwa tse dingwe le dinewt
- Lelapa
- Salamandridae2
- Lekoko
- Caudata
- Dikontinente
- Amerika Bokone
- Masea
- The eggs contain tetrodotoxin, which helps protect the offspring from predators such as the common garter snake.1
- Kotsi go batho
- 4 / 5: E kotsi thata3
Kwa dintlha di tswang teng
- Rough-skinned newt (Wikipedia (CC BY-SA 4.0))
- Taricha granulosa (iNaturalist): maina le thulaganyo ya mefuta.
- Venom Wiki: seelo sa kotsi, bogolo jo bo tlwaelegileng le kakanyo ya lebelo ke tsa rona. Bona kafa re di balang ka teng: Kafa re lekanyang kotsi ka teng.
Ntlha nngwe le nngwe mo tsebeng e e na le nomoro e e supang motswedi wa yone. Fa re dirile phoso, maitshwarelo, re barati ba diphologolo, e seng kgatiso ya saense. Re bolelele kwa [email protected] mme re tla e baakanya.