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    Age Structure, Growth, and Survival Rates of an Insular Population of Hemidactylus turcicus
    (Wiley, 2025) Altunisik, Abdullah; Kurtul, Didem; Gul, Cigdem; Boran, Begum; Tosunoglu, Murat
    The Mediterranean house gecko, Hemidactylus turcicus (Linnaeus, 1758), a widespread nocturnal lizard, exhibits diverse life-history traits, yet its insular populations in T & uuml;rkiye are underexplored. This study examines how Bozcaada's insular environment shapes the age structure, body size, growth rates, and sexual dimorphism of H. turcicus, providing a detailed demographic and morphometric baseline. We sampled 30 individuals (19 males, 11 females) from Bozcaada, & Ccedil;anakkale, T & uuml;rkiye, measuring snout-vent length (SVL), body mass, and additional traits (head length, width, height, forearm, and hind leg length). Age was determined via skeletochronology, counting phalangeal Lines of Arrested Growth (LAGs). Results show a maximum longevity of 7 years for males (mean: 4.26 +/- 0.33) and 6 years for females (mean: 3.91 +/- 0.41). SVL averaged 45.19 +/- 1.59 mm for males and 43.51 +/- 2.33 mm for females, with growth rates of 3.10 +/- 1.03 mm/year (males) and 3.58 +/- 1.24 mm/year (females), modeled using the von Bertalanffy equation. Sexual dimorphism was subtle (SDI = 0.04, male-biased), with no significant differences in morphometric traits between sexes. Survival rates were 0.78 for males and 0.76 for females, yielding adult life expectancies of 6.06 years (males) and 5.80 years (females), indicating a stable population. These findings suggest that Bozcaada's insular conditions, including limited resources and reduced predation, influence size, growth, and survival. This study establishes a novel profile of H. turcicus in an insular habitat, highlighting ecological adaptations and providing a foundation for future research and conservation strategies for this adaptable species.
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    The first results on phylogeography and genetic structure of Rana dalmatina (Amphibia: Ranidae) in Türkiye
    (Springer, 2025) Ergul Kalayci, Tugba; Bulbul, Ufuk; Tosunoglu, Murat
    We still have limited knowledge concerning the phylogeography of amphibians and reptiles from the Anatolian Peninsula. We focused on Rana dalmatina and conducted phylogenetic analyses to reveal the phylogeography of this species based on the cytochrome oxidase subunit-I (COI, 531 bp) gene differentiation. Consistent with the literature, we found a very low genetic variation among R. dalmatina specimens from T & uuml;rkiye, ranging from 0.000 to 0.009. Additionally, we identified a suitable time for diversification for specimens from T & uuml;rkiye and certain parts of Europe. The specimens from T & uuml;rkiye are separated from those of European members in the middle to late Pleistocene (680,000 to 1.06 million years ago). Age of divergence and the level of currently observed genetic diversity are not compatible with each other. A low level of nucleotide diversity and a high level of haplotype diversity support rapid colonisation with limited gene variability in R. dalmatina. Based on Bayesian inference and ML trees, the specimens from Greece were located in different branches. In contrast, all specimens from the other localities from Europe (Germany, Austria, and Slovakia) and T & uuml;rkiye shared the same branch. Here, we present the first study to enlighten the genetic differentiation level, phylogeography, and phylogenetic relationship of R. dalmatina with a considerably wide range of specimens.