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Longevity and age of sexual maturity are key life history trait factors directly linked to ecological and evolutionary aspects. In this study, we determined age structure of Parvilacerta parva individuals from Sivas (Turkey) using skeletochronology. The maximum age was found to be seven years for females and six years for males of P. parva. A significant relationship was found between age and body size in individuals whose head length, head width and body length were measured. Additionally, it was seen that there is a significant relationship among body length, head length and head width., Yaşam tarihi özelliklerinden; ömür uzunluğu ve eşeysel olgunluk yaşı, bireyin ekolojik ve evrimsel safhaları ile direkt bağlantılı kilit faktörlerdir. Bu çalışmada Sivas'tan (Türkiye) toplanan Parvilacerta parva bireylerinin iskelet kronolojisi yöntemi ile yaş yapıları belirlenmiştir. Maksimum yaş P. parva'nın dişi bireylerinde 7 yıl, erkeklerinde 6 yıl olarak bulunmuştur. Baş uzunluğu, baş genişliği ve vücut uzunluğu belirlenen bireylerde, yaş ve vücut boyu arasında anlamlı bir ilişki tespit edilmiştir. Bununla birlikte, vücut uzunluğu, baş uzunluğu ve baş genişliği arasında da anlamlı bir ilişki mevcuttur.

Cannibalism involves consuming all or part of another individual of the same species as food. Consuming the same species, or showing cannibalistic behaviour is common in reptiles, especially in snake species. The captured female Coronella austriaca of the Colubridae family was kept in captivity for two months in the terrarium. The female sample fed on one of the offsprings after ovoviviparous delivery. In the following observations it was determined that one of the juvenile individuals fed on another juvenile with similar size. The objective of this study is to provide information about the breeding and cannibalistic behaviour of Coronella austriaca under captivity.

This study examined the effect of variations in the water characteristics (dissolved oxygen, pH, conductivity and temperature) of the biotopes of freshwater turtles (Emys orbicularis and Mauremys rivulata) collected from different localities in Canakkale, Turkey on the blood parameters and put forward the variations in blood parameters for survival during wet and dry periods. According to the water quality of their biotopes, differences were detected in the erythrocyte and leukocyte counts of the species E. orbicularis and in the erythrocyte and leukocyte counts as well as in the MCV (mean cell volume) and MCH (mean cell hemoglobin) values in M. rivulata. In the species E. orbicularis, differences were detected in the biochemical sense in total protein and urea quantities between dry and wet periods.

Life history traits of lizard species, including agamid species, generally involve male-larger body size, but age of these species has not adequately been examined in each cohort. We thus conducted a skeletochronological study using 16 preserved specimens of Paralaudakia caucasia (8 males, 6 females, and 2 juveniles) captured from Elmadag, Igdir, Turkey. Mean snout-vent length was slightly but insignificantly larger in males (120.2 mm) than in females (115.9 mm). Maximum longevity was 10 years in males and 6 years in females. No significant difference in age structure was found between the sexes. Juveniles were 2-year old young. Mean age was 7.12 years for males and 5.33 years for females. Sexually matured individuals were found at the end of the second or third years (i.e., first reproduction occurred at 3 – 4 years). A positive correlation was detected in age and body size in both sexes, as has previously been shown in other lizard species. Our finding of age structure in P. caucasia would contribute to our understanding of life-history trait variations among lizard species.

WOS: 000342305800009 To understand the effects of island and mainland on life history traits (e. g. longevity, age at maturity, body size and body mass) of the smooth newt Lissotriton vulgaris (Linnaeus, 1758), we generated data on age and body measurements for an island (Bozcaada) and a mainland (Canakkale) population in northwestern Turkey. Age was determinated by skeletochronology. the maximum life span was 4 years in the island population and 5 years in the mainland population. Age at maturity was estimated to be 2-3 years for both sexes and the populations. While mean snout-venth length (SVL) was calculated as 35.56 mm for females and 31.95 mm for males in the mainland population, it was found to be 32.83 mm for females and 31.78 mm for males in the island population. Females from the mainland population were found to be significantly larger and heavier than those of the island population. A significant positive correlation was found between SVL and age for only males in the mainland population. Unexpectedly, age was not correlated with body size for the island individuals. Since there were hardly any demographic studies on any Urodela species comparing island and mainland populations, in this paper we contribute to the literature on this subject. Scientific and Technological Research Council of Turkey (TUBITAK Project)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [112T063] This study was supported by the Scientific and Technological Research Council of Turkey (TUBITAK Project No. 112T063).