description California Newt Overview
The California newt, scientifically known as Taricha torosa, is a species of salamander endemic to the coastal regions and Sierra Nevada mountains of California. It is distinguished by its bumpy, dark brown dorsal skin and bright yellowish-orange underbelly, which serves as a warning to predators. The newt's skin secretes a potent neurotoxin called tetrodotoxin, making it highly dangerous to consume. This toxicity has led to an evolutionary arms race with local populations of common garter snakes, which have developed varying degrees of genetic resistance to the toxin.
insights Ranking position
California Newt ranks #74 of 213 in the Amphibian ranking, behind Great Crested Newt, ahead of Eastern Tiger Salamander.
help California Newt FAQ
How poisonous is a California newt?
California newts carry tetrodotoxin in their skin, the same class of potent neurotoxin associated with pufferfish. The toxin discourages predators and makes handling or ingestion unsafe for people and pets.
Why can some garter snakes eat California newts?
Certain populations of common garter snakes have evolved resistance to tetrodotoxin. In places where resistant snakes and toxic newts coexist, each species can exert evolutionary pressure on the other.
Where can California newts be found in the wild?
Taricha torosa is endemic to California and occurs in coastal and foothill habitats. Adults commonly move to ponds, streams, or reservoirs during the rainy breeding season.
How can you distinguish a California newt from a rough-skinned newt?
California newts generally have lighter skin around the lower eyelid, while rough-skinned newts typically have dark coloration there. Their ranges overlap in parts of northern California, so location and several physical traits should be considered together.
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