Hybridisation with other crested newt species and a loss of breeding ponds because of decreasing spring rain in the southern range (possibly due to global warming) are also seen as threats. The smooth newt, northern smooth newt or common newt is a species of newt commonly found throughout Europe, except the far north, areas of Southern France and the Iberian Peninsula.
For example, building of dams in the Danube River, conversion of habitats into arable lands, eutrophication of breeding water bodies, etc., lead to extinction of some populations. [6] Later genetic study, however, did not support the distinction of these two forms. Currently, 74 species have been identified in the Northern Hemisphere - Europe, Asia, the northern tip of Africa, and North America. The marbled newt is a mainly terrestrial newt native to Europe. Side and back are black spotted dark brown with white stippled patterns.
The Danube crested newt or Danube newt (Triturus dobrogicus) is a species of newt found in central and eastern Europe, along the basin of the Danube river and some of its tributaries and in the Dnieper delta. Great Crested Newt (Triturus cristatus)Great Crested Newts are the biggest newt species in the UK and have been around for approximately 40 million years. Although not yet considered threatened, Danube crested newt populations have declined significantly, the reason being mainly habitat loss. Genetic data demonstrated the Anatolian crested newt to be distinct from the other two species, although it hybridises with the Balkan crested newt at its western range end. Backs and sides are dark brown, while the belly is yellow to orange with dark blotches. In their aquatic habitats, they hide under vegetation, and on land, they use structures such as logs, rocks, or small animal burrows for cover. It has a more slender, elongate body than the other species, well adapted to swimming, with a narrow head and relatively short limbs. It occurs from sea level to 2,500 m (8,200 ft) elevation. Although the Danube Crested Newt often occurs in human neighborhoods, anthropogenic destruction of habitat leads to decline and extinction of this species in many sites. Not all aquatic salamanders are considered newts, however. Most species of Salamandridae have moveable eyelids but lack lacrimal glands.
The species is found in Portugal and western Spain. [2] The northern crested newt is its sister species, according to phylogenomic studies. Great Crested Newt (Triturus cristatus) - Guest from the wild - Animalia Kingdom Show - Duration: 2:40. Reproduction is dioecious. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
[14] [15]. [10] :10–14 [9] :345 Females can sometimes have a yellow stripe along the back, similar to the Italian crested newt (T. carnifex). Like all crested newts, T. dobrogicus males develop a crest on their back and tail during breeding phase, which can be quite high and jagged, usually starts between the eyes and nostrils, and is interrupted at the tail base. Danube Crested Newt is found in the Palearctic. Triturus dobrogicus (Danube Crested Newt) is a species of amphibians in the family Salamandridae. The northern crested newt, great crested newt or warty newt is a species of newt native to Europe and western Asia. Negative factors. This body shape has evolved through an increase in the number of rib-bearing vertebrae: there are 16–17 of them in T. dobrogicus, the highest number among the crested newts. As in other crested newts, a female lays around 200 eggs per season, which are folded individually into leaves of aquatic plants. It is a large newt, growing up to 16 cm (6.3 in) in females. Triturus is a genus of newts comprising the crested and the marbled newts, which are found from Great Britain through most of continental Europe to westernmost Siberia, Anatolia, and the Caspian Sea region. [10] :80–89 The eggs are fertilised internally. For the remainder of the year, the newts live in shady land habitats, usually forests. The Anatolian crested newt is a newt species endemic to northern Anatolia in Turkey. The Danube crested newt or Danube newt (Triturus dobrogicus) is a species of newt found in central and eastern Europe, along the basin of the Danube river and some of its tributaries and in the Dnieper delta. http://eol.org/schema/terms/nearThreatened, http://apiv3.iucnredlist.org/api/v3/taxonredirect/22216, http://purl.obolibrary.org/obo/ENVO_00000873, http://purl.obolibrary.org/obo/GO_0019953, http://purl.obolibrary.org/obo/GAZ_00000071, http://rs.tdwg.org/ontology/voc/SPMInfoItems#ConservationStatus, http://www.iucnredlist.org/technical-documents/categories-and-criteria, http://eol.org/schema/terms/Pontic_steppe, https://www.worldwildlife.org/ecoregions/pa0814, http://purl.obolibrary.org/obo/RO_0002303, http://purl.obolibrary.org/obo/ENVO_00000233, http://purl.obolibrary.org/obo/ENVO_00002009, http://purl.obolibrary.org/obo/GO_0040011, https://www.wikidata.org/entity/Q21907045, https://eol.org/schema/terms/mineralizedSkeletonContains, http://purl.obolibrary.org/obo/CHEBI_52254, http://eol.org/schema/terms/population_trend, http://purl.obolibrary.org/obo/GO_0000003. Newts metamorphose through three distinct developmental life stages: aquatic larva, terrestrial juvenile (eft), and adult. Required fields are marked *. It is associated with freshwater habitat. [10] :16–17, Compared to the other crested newt species, the Danube crested newt is more adapted to life along a river system and frequently occurs in flowing water and together with fish. [1], Danube crested newts have the longest aquatic phase in the genus Triturus.
They are widely distributed throughout Britain but this distribution is extremely patchy; they’re absent from Ireland and … They also lack nasolabial grooves. Their English names refer to their appearance: marbled newts have a green–black colour pattern, while the males of crested newts, which are dark brown with a yellow or orange underside, develop a conspicuous jagged seam on their back and tail during their breeding phase. It has a slim and slender body but during the breeding season, the male newts grow a crest on their tails and backs. Salamandrids are distinguished from other salamanders by the lack of rib or costal grooves along the sides of their bodies and by their rough skin. The Danube Crested Newt (Triturus dobrogicus) is a species of concern belonging in the species group "amphibians" and found in the following area(s): Austria, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic, Hungary, Republic of Moldova, Romania, Serbia, Slovakia, Ukraine.
The Danube crested newt is named after the river the species is found at. When they have gained the female's interest, they guide it over a spermatophore they deposit on the ground, which the female then takes up with her cloaca.
The alpine newt is a species of newt native to continental Europe and introduced to Great Britain and New Zealand. Ommatotriton ophryticus, the northern banded newt, is a species of newt in the family Salamandridae.
The Danube crested newt is found in three allopatric areas of distribution from central to eastern Europe: In addition to the northern crested newt to the north, the Danube crested newt's range borders that of the Italian crested newt (T. carnifex) in the west, and that of the Macedonian (T. macedonicus) and Balkan (T. ivanbureschi) crested newts in the south. Its range borders that of the smooth newt, the Greek smooth newt and Kosswig's smooth newt to the north, west, and east, respectively.
Your email address will not be published. Animalia Kingdom - Łukasz Karnatowski 5,930 views Adult newts have lizard-like bodies and return to the water every year to breed, otherwise living in humid, cover-rich land habitats. Triturus dobrogicus (Danube Crested Newt) is a species of amphibians in the family Salamandridae. A newt is a salamander in the subfamily Pleurodelinae. It has sexual reproduction. Schmidtler's smooth newt is a newt species found from northwestern Greece and southeast Bulgaria over East Thrace across the Bosphorus to northwest Anatolia. "Intraspecific taxonomy and nomenclature of the Danube crested newt. It has a smaller and more slender body than the other crested newts in genus Triturus but l It is listed as near threatened by IUCN. [7] [8], Measuring 13 to 15 centimetres (5.1 to 5.9 in) long in total, sometimes up to 18 centimetres (7.1 in) in females, [9] :345 the Danube crested newt is the smallest crested newt species. The Balkan crested newt or Buresch's crested newt is a newt species of the crested newt species complex in genus Triturus, found in Southeastern Europe and Anatolia. It is listed as near threatened by IUCN. The Danube crested newt was described as a variety of the northern crested newt (Triturus cristatus) by C. Kiritzescu in 1903. Typical breeding sites are slow-flowing river margins, oxbow lakes, flooded marshland, larger ponds, or ditches, provided abundant underwater vegetation is available. Larvae develop two to four months in the water before reaching metamorphosis. It has a slim and slender body but during the breeding season, the male newts grow a crest on their tails and backs. Kosswig's smooth newt is a newt species found in northwestern Anatolia, east of the Bosphorus. [3] Later, it was considered a subspecies until genetic analysis supported its recognition as a separate species in the crested newt species complex. More than 100 known species of newts are found in North America, Europe, North Africa and Asia. For half of the year or longer, adults live in slow-flowing river margins, lakes, or ponds, where reproduction takes place. Males develop a conspicuous jagged crest during the breeding season. [10] :10–14, The Danube crested newt's back and sides are dark brown with black spots and white stippling. The belly is orange to red (in other crested newts, it is usually yellow or orange–yellow), with small or medium-sized black blotches that have sharp edges. [1] Like the other crested newts, T. dobrogicus is listed in the Berne Convention (appendix II) and the EU Habitats Directive (annexes II and IV), and capture, disturbance, killing, trade, and destruction of habitats are prohibited.
Danube crested newts eating. [10] :44 [13] :144–145 Males court females with a display of ritualised body movements. The three species form a complex of morphologically indistinguishable cryptic species. Your email address will not be published. Published on September 14th 2019 by staff under Newts. [4] [5], Separated populations from the Danube Delta and the Pannonian Basin (see section Distribution and habitats) were described as two subspecies, T. dobrogicus dobrogicus and T. dobrogicus macrosoma, in 2000. [10] :58–59 Predators include herons and other birds, snakes such as the grass snake, and various carnivorous mammals. It is found in northeastern Turkey and western Caucasus in Georgia, Armenia, and southern Russia. The terrestrial juvenile phase is called an eft. The Danube crested newt is named after the river the species is found at.