Triturus


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Triturus

 

(tritons), a genus of tailed amphibians of the family Salamandridae. The body measures approximately 18 cm in length, and the tail has a cutaneous border and is laterally compressed. Ten species are encountered in Europe and adjacent regions of Asia; they inhabit plains and mountains, living mainly in forests. They winter on land, mainly in rodents’ holes, under stones, in rotting tree stumps, and under fallen trees. In spring tritons move to shallow, usually stagnant bodies of water, where they lay their eggs. At this time a high, frequently ridged crest grows on the back and tail of the males, and the body acquires a bright coloring.

Fertilization is internal. The male casts into the water sperma-tophores (gelatinous masses 3–4 mm in size containing a large number of spermatozoa), which the female seizes with the edges of the cloaca. She then deposits approximately 150 fertilized eggs in small batches. The larvae metamorphose into tritons three to five months later and sometimes the following year.

In water, tritons feed on small crustaceans, mollusks, aquatic insects, frog’s eggs, and the like, while on land they feed on slugs, spiders, earthworms, insects, and other organisms. Tritons are used as laboratory animals. Five species occur in the USSR, including T. vulgaris and T. cristatus. Some other tailed amphibians are also called tritons.

REFERENCES

Terent’ev, P. V., and S. A. Chernov. Opredelitel’ presmykaiu-shchikhsia izemnovodnykh, 3rd ed. Moscow, 1949.
Triton iaksolotl’. Moscow, 1952.
Zhizn zhivotnykh, vol. 4, part 2. Moscow, 1969.

I. S. DAREVSKII

References in periodicals archive ?
Variability and microevolutionary patterns in Triturus marmoratus from Portugal: age, size, longevity and individual growth.
Dorsalization of the ventral marginal zone of the Triturus gastrula.
However, it has been identified together with Lissotriton vulgaris or Triturus cristatus or even both at the same time.
The newts, whose Latin name is Triturus cristatus, needed somewhere to hunt for food and to shelter during cold or very dry times of the year.
All measurements were made in a single batch on a Triturus ELISA automated analyzer (Grifols) by a single operator following the manufacturer's instructions.
The strategy means the newt - official name Triturus Cristatus - will be safe and well in an improved living environment, including a brand new pond.
Three-dimensional reconstruction of the chromatin bodies in the nuclei of mature erythrocytes from the newt triturus cristatus: the number of nuclear envelope-attachment sites.
But essential engineering work to prepare the site has been delayed while hundreds of the newts - Latin name Triturus cristatus - are lured on to other land nearby.
Parameters of ecology and scale integrate the gradient and mosaic models of hybrid zone structure in bombina toads and Triturus newts.
Restricted gene flow in a moving hybrid zone of the newts Triturus cristatus and T.
The great crested newt, or triturus cristatus, is Britain's largest and most threatened newt, which is why such care is being taken over the Tredomen development.