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Facultative paedomorphism is regularly observed in salamanders, including newts of the Lissotriton vulgaris group. We document the first record of paedomorphism in L. (v.) kosswigi from a locality near Karasu, in the vicinity of Sakarya, Turkey. We compare measurements of 5 paedomorphic individuals with those of 10 metamorphic individuals from the same population and with measurements taken from the literature. Paedomorphs are on average bigger than metamorphs; intriguingly, the opposite pattern has been observed in the Turkish L. (v.) schmidtlerorum. [ABSTRACT FROM AUTHOR]

A rich and diverse coral fauna collected from the Livian (Viséan, Mississippian) of Zonguldak and Bartın (North-western Turkey) contains numerous specimens of Dorlodotia and related forms. The most common species, D. delepinei, is redetermined as Dorlodotia briarti, an European species. A new species of Dorlodotia is described for very large, phaceloid forms: D. euxinensis. The genus Ceriodotia is created for species close to Dorlodotia with a cerioid habit. It comprises two species: C. bartinensis and C. petalaxoides, both common in the Viséan of Zonguldak and Bartın. Based on comparison of morphological characters and features of the astogeny, a phylogenetic lineage is proposed for Dorlodotia and the new taxa. The evolution of D. euxinensis from D. briarti is peramorphic. Subsequent paedomorphosis resulted in the lineage D. euxinensis- C. bartinensis- C. petalaxoides. Ceriodotia probably includes Viséan taxa from Asia previously described as ' Acrocyathus'. [ABSTRACT FROM AUTHOR]

During a monitoring survey of the amphibians and reptiles in Lake Sülüklü (Manisa, Turkey) in the spring of 2010, we found that the smooth newt (Lissotriton vulgaris) population was composed of partially paedomorphic individuals. During the study, 146 aquatic individuals (56 males, 90 females) were captured and marked. Of these individuals, 27 (seven males, 20 females) were paedomorphic. The population size in Lake Sülüklü was calculated as 305 (SE = 20.72, range = 270–351). According to these data, it was calculated that about 18.5% (56 individuals) of the population consisted of paedomorphic individuals. [ABSTRACT FROM AUTHOR]

During a monitoring survey in Lake Sülüklü (Western Anatolia, Turkey), I captured 2 paedomorphic Lissotriton vulgaris ssp. females on 10 September 2010. The individuals were brought to the laboratory and kept in aquarium. I recorded both individuals switched to the metamorphic form in 22 days. This morph switching observation is the firstly recorded from the Turkish populations of L. vulgaris. [ABSTRACT FROM AUTHOR]