California newt
The California newt is a small amphibian with a warty grey back and a bright orange-yellow belly. It lives only in California, in the western United States. Its skin contains a powerful poison, so it is a good example of an animal you should look at but never handle.1

Ako ho spoznať
- Warty, slate-grey skin on the back1
- Bright orange-yellow skin on the underside1
- Orange skin around the bottom of the eye (the rough-skinned newt has grey there)1
- Eyes that stick out beyond the edge of the jaw when seen from above, giving the head a bullet-like shape1
- Adults are about 13 to 20 cm long1
Často sa zamieňa s: The rough-skinned newt looks very similar and is often hard to tell apart in the field. The California newt has orange skin around the bottom of the eye and eyes that stick out past the jaw, while the rough-skinned newt has grey skin there and eyes that do not stick out. The red-bellied newt has dark irises instead of yellow, more red underneath, and a dark band across the vent.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, not venomous, so it does not bite or sting. Its skin glands release tetrodotoxin, a neurotoxin (a poison that attacks the nerves). It is hundreds of times more toxic than cyanide and is the same toxin found in pufferfish and harlequin frogs. It is strong enough to kill most vertebrates, including humans.1
Aké nebezpečné je pre ľudí?
Nebezpečenstvo pre ľudí: Veľmi nebezpečnéČloveka, ktorý nedostane liečbu, môže zabiť.The toxin is strong enough to kill people. Because of their toxin, California newts have very few natural predators.1
Čo robí, keď sa bojí?
When threatened, it performs the unken reflex: it stretches out, arches its body, and lifts its head and tail into the air to show its bright belly. It can also produce a foamy substance when exposed to high temperatures.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 California newt v porovnaní s TEBOU?
Iba matematika v tvojom prehliadači. Nič sa neukladá ani nikam neposiela.
Aké je rýchle?
Fakty
Because snakes evolved resistance, newts have evolved to make far more toxin than any other predator could need, an evolutionary arms race.1
The foam the newt produces forms a protective layer that helps it keep moisture and shields it from burns during wildfires.1
Researchers believe bacteria make the tetrodotoxin, and the newts acquire it by eating those bacteria.1
Garter snakes are the most common predator, and some have developed resistance to the newt's toxin.1
Adults usually return to the same pool where they hatched to breed.1
Lovec mýtov
Mýtus: Newts do not make any sounds.
Pravda: California newts make clicks, squeaks and whistles. Clicks are the most common, squeaks are used in defence, and whistles seem to be linked to recognising sex and to social rank.1
Pre znalcov jedov
- Vedecký názov
- Taricha torosa
- Skupina
- Pralesničky, ropuchy a mloky
- Rodina
- Salamandridae2
- Rad
- Caudata
- Kontinenty
- Severná Amerika
- Mláďatá
- Females lay egg masses of between 7 and 30 eggs, attached to plant roots or rocks in small, slow-moving pools. The larvae hatch in early to midsummer, depending on water temperature.1
- Ako sa mu darí v prírode
- California Special Concern species (DFG-CSC)1
- Nebezpečenstvo pre ľudí
- 4 / 5: Veľmi nebezpečné3
Odkiaľ sú fakty
- California newt (Wikipedia (CC BY-SA 4.0))
- Taricha torosa (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

