newt

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newt,

name for members of a large salamandersalamander,
an amphibian of the order Urodela, or Caudata. Salamanders have tails and small, weak limbs; superficially they resemble the unrelated lizards (which are reptiles), but they are easily distinguished by their lack of scales and claws, and by their moist, usually
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 family, widely distributed in the Northern Hemisphere and including the common European salamanders. Newts are lizardlike in shape and are usually under 6 in. (15 cm) long including the slender tail. Some are brightly colored and secrete irritating substances. Like other salamanders, newts go through an aquatic, gilled larval stage. In some species the adults remain aquatic, although they lose their gills and breathe air; in others the adults are terrestrial, returning to water only to breed. Still other newts go through two adult stages: a terrestrial stage, during which they are called efts, is followed by a permanent aquatic stage. One such species is the common red-spotted newt (Diemictylus viridescens) of the E United States, known in its terrestrial stage as red eft. The 3-in. (7.5-cm) adult lays its eggs in spring on the stems and leaves of water plants. The greenish-brown larvae remain in the water for several months before emerging as efts, orange-red with a double row of black-ringed vermilion spots. The efts spend two or three years on land, hibernating in winter under leaves, and then return permanently to the water, becoming olive green and developing a broad swimming tail. Newts are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Amphibia, order Urodela, family Salamandridae.

newt

[nüt]
(vertebrate zoology)
Any of the small, semiaquatic salamanders of the genus Triturus in the family Salamandridae; all have an aquatic larval stage.

newt

1. any of various small semiaquatic urodele amphibians, such as Triturus vulgaris (common newt) of Europe, having a long slender body and tail and short feeble legs
2. Chiefly Brit any other urodele amphibian, including the salamanders
References in periodicals archive ?
Callum started his study after he heard that a German herpetologist had found larval stage newts beside Loch Linnhe near Fort William while on holiday in 2011.
Katharine then rushed the newt and salad back to Sainsbury's Holborn store.
HELPING HAND: An endangered Great Crested Newt and, right: volunteers, from left, Geoff Smith, David Ainley and Martin Longman work on the newt project
Youngsters are being encouraged to get out of their cars and help the specialists scour the road ahead for newts.
The paper, "Regenerative capacity in newts is not altered by repeated regeneration and aging," is co-authored by Tsonis, Goro Eguchi and Yukiko Eguchi from Japan, Manisha Yadav and Jose Luis Millan from the Sanford-Burnham Medical Research Institute in La Jolla, Calif.
A business based in Ukraine reportedly is the main marketer for the newt and it operates primarily over the Internet.
The newts are about to come out of hibernation, buried in land surrounding the ponds, to start their breeding season.
Peter Hill, conservation officer for South and West Wales Amphibian and Reptile Group, said: "The great crested newt has very specific habitat requirements.
Experts say great crested newts are Britain's largest newt species and their numbers have declined significantly during the past century.
Anyone who harms a newt's habitat can end up with a pounds 5000 fine per newt or six months in prison.
The newts on that site will be moved to a new, purpose-built habitat in Rhuddlan.
Once work is over, the newts will be returned to the pond next to The Old Beams in Shenley Lodge, Milton Keynes, Bucks.