|
|
So far two species of non-native newt have been identified in
the wild in the UK.
The
Alpine newt Mesotriton alpestris is native to central
Europe. It has become established in a few localities in
Britain, often as a result of deliberate introductions. The adults grow up
to 12cm and are usually brown, green or grey, sometimes with a
marbled pattern. The belly is orange or red and unspotted. There
are dark spots along the sides and tail. Male Alpine newts have
a low, smooth, yellowish crest, with black spots or bars during
the breeding season.
The Italian crested newt Triturus carnifex is very
similar in appearance, and closely related to, our native
great
crested newt. Introduced animals can hybridise with great
crested newts and are therefore a cause for concern. Adults can
grow up to 16cm and they're generally stockier and more
smooth-skinned than the great crested newt. There is little or
no white stippling on the flanks and they have a more intensely
coloured yellow
belly with big, round dark spots. Female Italian crested newts
often have a yellow stripe down the back.
|