Rough-skinned newt
The 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

Ako ho spoznať
- 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
Často sa zamieňa s: 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
Sila toxínu
Jeho koža je toxická. Je nebezpečné dotknúť sa ho, olízať ho alebo ho zjesť.
Čo robí jeho toxín?
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
Aké nebezpečné je pre ľudí?
Nebezpečenstvo pre ľudí: Veľmi nebezpečnéČloveka, ktorý nedostane liečbu, môže zabiť.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
Čo robí, keď sa bojí?
It gives off an acrid smell that warns animals to stay away.1
Ak sa ho niekto dotkol alebo ho zjedol
- Ak sa ho niekto dotkol: dôkladne umy ruky a nedotýkaj sa očí ani úst. Ak ho dieťa alebo domáce zviera olízalo alebo zjedlo: volaj toxikologické centrum alebo tiesňovú linku.
Vždy najprv zavolaj na tiesňovú linku (112, 000, 911). Toto sú všeobecné rady prvej pomoci, nie lekárska rada. Základy prvej pomoci
Buď v bezpečí
- Nikdy sa nedotýkaj divého zvieraťa, nechytaj ho ani ho nedráždi, aj keď je malé a aj keď vyzerá, že spí alebo je mŕtve.
- Nechaj mu priestor. Ak nejaké stretneš, zostaň pokojný, pomaly cúvni a nechaj ho ísť svojou cestou.
- Ak si sa ho dotkol alebo si ho zjedol: nešúchaj si oči ani ústa, umy si ruky a vyhľadaj lekársku pomoc.
Nejde po tebe. Jeho toxín je tam len na to, aby ho nikto nezjedol. Viac o tom, ako zostať v bezpečí
Aké je veľké?
Aké je dlhé?
dlhé ako 6 kociek stavebnice v radeAký veľký je Rough-skinned newt v porovnaní s TEBOU?
Iba matematika v tvojom prehliadači. Nič sa neukladá ani nikam neposiela.
Aké je rýchle?
Fakty
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
Pre znalcov jedov
Odkiaľ sú fakty
- Rough-skinned newt (Wikipedia (CC BY-SA 4.0))
- Taricha granulosa (iNaturalist): mená a klasifikácia.
- Venom Wiki: úroveň nebezpečenstva, typická veľkosť a odhad rýchlosti sú naše vlastné. Pozri, ako ich určujeme: Ako hodnotíme nebezpečenstvo.
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Toxín v koži