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

Kako ga prepoznati
- 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
Često se miješa 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
Snaga otrova
Koža mu je otrovna. Opasno ga je dirati, lizati ili jesti.
Što radi njegov otrov ako ga dotakneš ili pojedeš?
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
Koliko je opasno za ljude?
Opasnost za ljude: Vrlo opasnoMože ubiti osobu koja ne dobije liječenje.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
Što radi kad se uplaši?
It gives off an acrid smell that warns animals to stay away.1
Ako ga je netko dotaknuo ili pojeo
- Ako ga je netko dotaknuo: dobro operi ruke i ne diraj oči ni usta. Ako ga je dijete ili kućni ljubimac polizao ili pojeo: nazovi centar za otrovanja ili broj za hitne slučajeve.
Uvijek prvo nazovi broj za hitne slučajeve (112, 000, 911). Ovo su opće upute za prvu pomoć, a ne liječnički savjet. Osnove prve pomoći
Ostani na sigurnom
- Nikad ne diraj, ne hvataj i ne zadirkuj divlju životinju, čak ni malu, i čak ni ako izgleda kao da spava ili je mrtva.
- Ostavi joj prostora. Ako je sretneš, ne paniči, polako se odmakni i pusti je da ode svojim putem.
- Ako ga dotakneš ili pojedeš: ne trljaj oči ni usta, operi ruke i potraži liječničku pomoć.
Ne želi ti ništa loše. Njegov otrov služi samo tome da ga nitko ne pojede. Više o sigurnosti
Koliko je veliko?
Koliko je dugo?
dugo kao 6 kockica za slaganje u nizuKoliko je Rough-skinned newt velika životinja u usporedbi s TOBOM?
Samo matematika u tvom pregledniku. Ništa se ne sprema niti šalje nikamo.
Koliko je brzo?
Činjenice
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
Za stručnjake za otrove
Odakle su činjenice
- Rough-skinned newt (Wikipedia (CC BY-SA 4.0))
- Taricha granulosa (iNaturalist): imena i klasifikacija.
- Venom Wiki: razina opasnosti, tipična veličina i procijenjena brzina naše su. Pogledaj kako ih izračunavamo: Kako ocjenjujemo opasnost.
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