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    Molecular and morphological assessment of the snake-eyed lizard, Ophisops elegans Menetries, 1832 (Sauria, Lacertidae) in Anatolia
    (Universitatea din Oradea, 2022) Bozkurt, Emin; Korkmaz, Ertan Mahir; Ilgaz, Çetin; Yilmaz, Can; Üzüm, Nazan; Avci, Aziz; Doğan, Özgül
    Ophisops elegans Menetries, 1832 includes six subspecies in Turkey. Here, we investigated the systematic status and distribution range of the subspecies of O. elegans in Anatolia concerning molecular and morphological approaches. Two mitochondrial (cytb and 16S rRNA) gene regions were used for the phylogenetic analyses. The phylogenetic trees were constructed with the Bayesian and Maximum Likelihood approaches. For morphological evaluations, ANOVA, Discriminant Function Analyses, and Mann Whitney-U Test were performed via SPSS. The O. elegans complex was split into six main clades. Clade A corresponded to nominate subspecies O. e. elegans. Clade B included African and Levant Ophisops samples. Clade C (O. e. ehrenbergii) was separated into two subclades, and the subspecies distribution was much broader than suggested in the literature. Clade D was defined as O. e. centralanatoliae. The distribution of O. e. centralanatoliae was also much broader than reported in the literature. Clade E can be named as O. e. basoglui, and its range was found to be narrower than mentioned in the literature. Clade F refers to the O. e. macrodactylus, and phylogenetic analyses did not recover O. e. budakibarani as a separate clade. Therefore, O. e. budakibarani was assigned as a junior synonym of O. e. macrodactylus. © Biharean Biologist, Oradea, Romania, 2022.
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    Morphological comparison of green turtle hatchlings from a different perspective: geometric morphometry
    (Universitatea din Oradea, 2024) Serttaş, Serhat; Sönmez, Bektaş; Yilmaz, Can
    Many ecological and evolutionary studies have attempted to explain patterns of shape variation and its covariation with other variables using geometric morphometrics. This approach has been limited to morphological comparisons of marine turtle hatchlings between sexes. Therefore, we used geometric morphometrics to investigate the effect of nest temperature and depth on the morphology of green turtle (Chelonia mydas) hatchlings on Akyatan Beach in the eastern Mediterranean during the 2020 nesting season. A total of 19 nests (10 for temperature and 9 for depth) were used. Nest temperature was divided into two groups as: < 30 °C and ≥ 30 °C, and nest depth as: ≤ 70 cm and ≥ 71 cm. The shape analysis of the carapace and plastron regions of a total of 95 hatchlings was carried out. Geometric morphometrics showed a significant difference between the two nest temperatures for carapace shape and between the two nest depths for plastron shape. However, PCA did not confirm this difference. Also, the supra caudal notch, the third costal scute, and the femoral and anal regions showed more variation in the transformation grids. In studies on the morphology of marine turtle hatchlings, it can be said that geometric morphometrics can be an alternative to classical morphometrics studies, which may cause long processing times and stress to the hatchling by the researcher. ©Biharean Biologist, Oradea, Romania, 2024.