Picture of Triturus Newt

Learn About The Protected
TRITURUS NEWTS



TRITURUS NEWTS
SCIENTIFIC CLASSIFICATION


KINGDOM Animalia
PHYLUM Chordata
CLASS Amphibia
ORDER Caudata
FAMILY Salamandridae
GENUS/SPECIES COMMON NAME
Triturus cristatus Great crested newt
(Warty newt)
Triturus helveticus Palmate newt
Triturus alpestris Alpine newt
Triturus vulgaris Smooth newt


GENERAL INFORMATION ABOUT
TRITURUS NEWTS


  • The genus Triturus is a relatively small Eurasian
    group which contains some of the most spectacular
    transformations in the animal world.
  • From relatively dull subterranean denizens to
    beautiful adorned and colored water creatures, newts
    are popular vivarium subjects throughout the world.
  • There are several TRITURUS NEWTS
    including the Triturus cristatus, the Triturus vulgaris,
    the Triturus alpestris, and the Triturus helveticus.
  • All these newts are European newts whose males dress
    for breeding.
  • There’s no mistaking a Triturus male in breeding
    season, and the crested is particularly distinctive.
  • Males of this genus grow tall, tadpole-like tails,
    with a fin or jagged crest, from the neck, along the
    back, and to the tail where the tail crest begins.
  • Most male newts exhibit some reshaping of the tail
    in breeding season, but few so dramatic as this.
  • Newts must be hibernated before they breed at 50
    F/10 C
    for 2-3 months.
  • They eat the usual small invertebrates like little
    worms, daphnia, artemia, etc, and do well on pelleted food.


ABOUT THE GREAT CRESTED NEWTS

(Triturus cristatus)
  • The Great Crested Newt (Triturus cristatus) occurs
    through much of England and into Eastern Wales.
  • It is uncommon in Scotland and Southwest England.
  • Within its range it can be relatively common.
  • The crested newts are the largest (to 15cm) and most
    heavily built newts of the genus Triturus.
  • They have a warty skin, quite unlike the smooth or
    granular skin of the smaller species.
  • The back is dark brown or black, and there may be
    white stippling along the flanks.
  • The belly is usually yellow or orange, with large
    black blotches or spots.
  • The males develop a high, toothed, black crest
    during the breeding season, and a white band at the
    sides of the tail.
  • The group was originally considered as one species,
    but has recently been split into four separate species.


    • Triturus carnifex: The Italian Crested Newt.
      The Italian crested newt has a distribution centered
      around Italy and the former Yugoslavia.
      Females and juveniles may exhibit a yellow dorsal stripe,
      which is usually absent in the other species, and there
      is little white stippling on the flanks.
      The throat is yellow and black with white stippling.


    • Triturus cristatus: The Northern Crested Newt.
      The northern crested newt is widely distributed across
      northern Europe.
      The wide distribution of this species leads to some
      variation in appearance, though white stippling is
      almost always present on the flanks, and the throat
      is dark with similar stippling.


    • Triturus dobrogicus: The Danube Crested Newt.
      Formerly also known as T. cristatus danubialis, the
      Danube crested newt has a restricted distribution around
      the Danube flood plains.
      This species is the smallest and least bulkily built of
      the cristatus group.
      Males have a particularly high crest, which may extend
      onto the head.
      The distribution of this species is not well known.
      It has a small range, and, apart from a small part of
      the Black Sea coast, it's distribution is bordered by
      the ranges of other crested newt species.
      This leads to hybrid zones where the ranges meet, making
      it difficult to establish the exact distribution of the
      pure species.


    • Triturus karelinii: The Southern or Turkish Crested Newt.
      The southern crested newt occurs in the far south-east
      of Europe.
      This is the largest species of the group.
      Belly colouration usually extends onto the throat.


  • These species are very closely related, and hybrids
    have been succesfully bred from most combinations of the
    four species.
    This group of species, together with the marbled newt,
    exhibit a chromosomal anomaly leading to a 50% mortality
    of all eggs produced.
  • This species is the most rapidly declining of all of
    European amphibians.
  • For this reason it has legal protection.


ABOUT THE PALMATE NEWTS

(Triturus helvecticus)
  • This newt's helvecticus name comes from Switzerland,
    where the species was first discovered.
  • During the breeding season the male Palmate Newt
    has webbed hind feet and a thread at the end of its tail.
  • The male has a wavy crest along its back.
  • The females have none of these features and are almost
    identical to each other.
  • They are protected under the Bern Convention and the
    Wildlife and Countryside Act.
  • Its habitat on land is at base of vegetation, under
    stones or in soil crevices.
  • Its habitat in water is almost any stand of water no
    matter how small. Mainly in soft-water areas.
  • They usually spend the winter on land in the
    hibernating (resting) stage, entering water for breeding
    in March/April.
  • Individuals may choose to remain in water during
    spring and summer or to return to the land.
  • The Palmate newt is the smallest British newt species.
  • It is widespread although it is not found in Ireland.
  • It is less common in hard water areas.
  • Because of the skin between its toes, the feet are
    like palms of the hand, from which it gets its name.
  • Its diet consists mainly of worms, slugs, snails,
    small aquatic insects as well as frogspawn tadpoles
    and even their own young.
  • If there are plenty of beetles then beetles, if a
    surfeit of worms then worms.
  • They spend much of their time in the weedy shallow water
    on the margins of ponds, lakes & slow-flowing rivers.


ABOUT THE ALPINE NEWTS

(Triturus alpestris)
  • One of the most attractive newts, both on land and
    especially in its aquatic form is the small but extremely
    distinctive species, the Alpine newt. The term 'Alpine`
    is slightly misleading because although occurring in the
    mid and lower elevations of that mountain range they also
    dwell vast regions of lowland and other mountain ranges
    throughout Europe and Western Russia.
  • The Alpine newt possesses the widest range, from
    Denmark, the Benelux countries (Belgium, Luxembourg
    and Holland), to northern Greece and eastern Russia.
  • This 9 - 12.7cm (3.53 - 5in) newt’s dorsal coloration
    varies from drab brown in females to a beautiful marbled
    arrangement of iridescent blue mottling in males.
  • Females also tend to have a granular skin texture
    as opposed the velvety texture of males.
  • The underside varies from a yellow-orange in females
    to a deep blood-red orange in males and speckles are
    completely absent.
  • During courtship males develop a low (1½ - 2mm) crest
    consisting of sequential yellow and black bars.
  • Northern Italy is inhabited by the Italian Alpine
    (T.a.apuanus) which at a maximum of 10cm is smaller than
    the nominate form.
  • It is also more aquatic than T.a.alpestris, often
    spending the entire year in cool ponds.
  • Females are larger and duller than males possessing
    flaccid folds of skin on the head, abdomen and limbs.
  • Dorsal color is dull brown with black blotches along
    the flanks where the venter is a tangerine hue.
  • In contrast males are slim, elegant and the most
    attractive Alpine newt when in courtship (which is most
    of the year).
  • Their dorsal colours comprise of opalescent silver
    and blue mottling with sky blue along the lower flanks.
  • At the edges of the vivid orange venter (which is
    heavily spotted on the throat) is a band of silvery white
    with black speckling (which extends to the head, legs and
    cloaca).
  • The lemon-colored crest is 2 - 3mm high with uniform
    black zigzags.
  • The tail also shows heavy blue and black blotched
    cresting. Even the eyes do not escape transformation,
    enlarging and turning gold.
  • Alpine newts are currently split up into ten different
    subspecies.
  • Only three subspecies are regularly available in
    captivity, almost of an entirely captive-bred derivation.


ABOUT THE SMOOTH NEWTS

(Triturus vulgaris)
  • The smooth newt varies greatly in appearance
    over it's range.
  • The maximum length attained is around 10cm.,
    although some individuals may be much smaller.
  • The ground colour is olive-grey in both sexes.
  • The belly is white or grey, with a central flash
    of red or orange.
  • The belly is spotted, as is the throat.
  • Males usually have more numerous and larger spots
    on their flanks than females, and some form of crest is
    present on breeding males, as is partial webbing on the hind
    feet, and a blue flash along the lower edge of the tail.
  • The appearance of breeding males varies widely
    throughtout the smooth newt's range, although females are
    relatively similar.
  • They are nocturnal eaters. As they live around the
    edge of ponds they tend to eat what is found there,
    although they travel quite far from water.
  • They breathe through their skins, as well as with
    their lungs.
  • In the breeding season they become much more brilliant
    in colouring, and the males assume a handsome ornamental
    crest on the back and tail.
  • Several subspecies of this newt exist:


    • T. v. vulgaris.
      In this subspecies, which occurs over most of northern
      Europe, the breeding male has a high, wavy-edged crest.
      There is no tail filament, and no dorsolateral ridges.


    • T. v. ampelensis.
      This subspecies occurs only in northern Rumania.


    • T. v. graecus.
      This subspecies is found in Greece and Bulgaria.
      Breeding males exhibit relatively straight crests.
      There is also webbing on the hind feet, and tail
      filaments, much like the palmate newt (which does not
      occur in this area).


    • T. v. kosswigi.
      This species occurs in northern Turkey, along the south
      coast of the Black Sea. Like T. v. graecus, this subspecies
      exhibits a straight crest, foot webs, and a tail filament.
      In addition, it also has strong dorsolateral ridges, also
      like the palmate newt.


    • T. v. lantzi.
      This subspecies occurs along the eastern edge of the
      Black Sea.
      It is another subspecies having a tail filament, and well
      developed foot webbing.
      However, this subspecies has a rather denticulate
      (toothed) crest, like that of T. v. vulgaris.


    • T. v. meridionalis.
      This Italian and Slovenian subspecies is another that
      has a tail filament, pronounced webbing on the hind feet,
      and a straight crest.
      The crest in this form is also rather low.


    • T. v. schmidtlerorum.
      This is a dwarf subspecies, growing to perhaps 6 cm,
      and occuring in north-western Turkey.
      The foot webbing is very rudimentary, and there is no
      tail filament.
      The crest is denticulated, even spiky.


  • These newts are carnivores at all stages of their
    life cycle.

WHY ARE THESE VULNERABLE NEWTS
PROTECTED???
  • The main threat posed to newts in Europe is that
    of habitat loss.
  • Newts require waterbodies surrounded by adequate
    terrestrial habitat, in order to support both phases of
    their life.
  • When either of these two habitats is damaged, a
    population may not be able to survive.
  • Ponds in Europe are disappearing rapidly, and few
    countries have strong legal protection for their ponds.
  • Existing ponds may also become degraded, and unable to
    support good populations of newts.
  • The natural process of succession may lead to ponds
    being overgrown with reeds, rushes, shrubs or trees.
  • Predation may also be a factor involved in decline in
    newt populations.
  • Fish, in particular, are important predators of both
    adult and larval newts. Predation by introduced fish may
    already have led to the extinction of T. alpestris
    lacusnigri.
  • Larvae of T. marmoratus and of the cristatus group are
    particularly susceptible, as they spend most of their time
    in the water column, rather than on the bottom.
  • Pesticides have been successfully used to eradicate
    fish for newt breeding sites, although these must be used
    in winter, when the newts are not in the water.
  • Collection for the pet trade has been accused of
    causing declines in newt populations.
  • The larger, more vividly marked species (especially T.
    marmoratus, T. cristatus, and T. carnifex) have been common
    in the trade in the past, although tighter restrictions on
    collection and export in the European Union have now led
    to a decrease in the trade in wild-caught specimens.
  • Since the collapse of the Soviet Union, there has been
    a major increase in the export of live wild-caught animals
    from the ex-Soviet states, and T. vittatus has been
    exported regularly.
  • They are threatened by loss and fragmentation of
    suitable aquatic and terrestrial habitat due to natural
    succession, construction developments, recreational usage,
    land drainage, water abstraction and the in-filling of
    ponds and ditches as a result of agricultural intensification
    and diversification.
  • The decline in the water quality of ponds due to
    pollution from agricultural and industrial chemicals
    and waste.
  • The inappropriate management of known newt sites.
  • The poor quality mitigation schemes, such as insufficient
    provision of terrestrial habitat and inappropriate pond
    designs which favour fish introduction.


TO HELP PROTECT THE
TRITURUS NEWTS
  • Existing ponds need maintenance, and local conservation
    bodies will advise on projects in your area.
  • Surveying is needed, both to locate unrecorded newt
    populations, and to monitor existing ones.
  • One of the best ways to help newts, if you have a
    garden, is to build a pond. Even a small garden pond may
    support some of the smaller species.
  • To avoid depletion of wild populations, anyone desiring
    to maintain captive newts should only buy captive-bred
    stock. All of the Triturus species are bred by private
    breeders in Europe, and the large numbers of eggs and larvae
    produced mean that surplus young newts are often available.
  • To halt and reverse the decline of newt populations,
    raise awareness of the importance of newts conservation
    and the dependence of the species on wetland and terrestrial
    habitats.
  • Raise the awareness of newts legislation with landowners,
    managers, developers etc.
  • The GREAT CRESTED NEWT is
    protected under Annex IIa and IVa of the EU Habitats
    and Species Directive, Appendix II of the Bern Convention
    (SI 1994 No. 2716) and by Schedules 5 and 9 of the Wildlife
    and Countryside Act 1981.


Music From: I Will Survive



Last Updated: 3-April-1999
WebMaster: Daisy Moreno daisymoreno@HotMail.com
Copyright © 1999. All rights reserved

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