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A newt is a salamander in the subfamily Pleurodelinae. The terrestrial juvenile phase is called an eft. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats. Not all aquatic salamanders are considered newts, however.
Eastern newts have a lifespan of about 8–10 years in the wild, but some individuals have been known to live up to 15 years. [8] Eastern newts have three stages of life: (1) the aquatic larva or tadpole, (2) the red eft or terrestrial juvenile stage, and (3) the aquatic adult.
The palmate newt (Lissotriton helveticus) is a species of newt found in Western Europe, from Great Britain to the northern Iberian Peninsula. It is 5–9.5 cm (2.0–3.7 in) long and olive or brown with some dark spots. The underside is yellow to orange, and the throat, unlike in the similar smooth newt, always unspotted. A dark stripe runs ...
A rough-skinned newt underwater A rough-skinned newt at Brice Creek in Oregon. Throughout much of the newt's range, the common garter snake (Thamnophis sirtalis) has been observed to exhibit resistance to the tetrodotoxin produced in the newt's skin. While in principle the toxin binds to a tube-shaped protein that acts as a sodium channel in ...
The northern crested newt, great crested newt or warty newt (Triturus cristatus) is a newt species native to Great Britain, northern and central continental Europe and parts of Western Siberia. It is a large newt, with females growing up to 16 cm (6.3 in) long. Its back and sides are dark brown, while the belly is yellow to orange with dark ...
Red-bellied newts can live for 20-30 years. [9] After reaching reproductive maturity, male red-bellied newts start congregating at stream banks as early as January or February. One to three weeks later, the females join them and the newts mate. [2] Red-bellied newts lay their eggs in fast-flowing streams or rocky rivers.
The smooth newt, European newt, northern smooth newt or common newt (Lissotriton vulgaris) is a species of newt. It is widespread in Europe and parts of Asia, and has been introduced into Australia. Individuals are brown with a spotted underside that ranges in colour from orange to white.
The Iberian ribbed newt (Pleurodeles waltl), also known commonly as the Spanish ribbed newt and el gallipato in Spanish, is a species of salamander in the subfamily Pleurodelinae of the family Salamandridae. The species is native to the central and southern Iberian Peninsula and Morocco. [2] It is the largest European newt species.