Nazan Üzüm

Nazan Üzüm
Aydın Adnan Menderes University · Department of Biology

Prof. Dr.

About

83
Publications
43,033
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1,512
Citations
Citations since 2017
39 Research Items
1015 Citations
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150

Publications

Publications (83)
Article
Full-text available
When two putatively cryptic species meet in nature, hybrid zone analysis can be used to estimate the extent of gene flow between them. Two recently recognized cryptic species of banded newt (genus Ommatotriton) are suspected to meet in parapatry in Anatolia, but a formal hybrid zone analysis has never been conducted. We sample populations throughou...
Article
Full-text available
Bu çalışmada, Lissotriton schmidtleri (Cüce Semender)’nin iki farklı yükseklikten (Efes, 5 m ve Karagöl, 816 m a.s.l.) elde edilen popülasyonunun yaş yapısı ve vücut ölçülerinin karşılaştırılması yapılmıştır. Parmak enine kesitlerindeki durgunluk çizgilerinin (LAG’ların) sayımıyla yetişkinlerin yaşını tespit etmek için iskelet kronolojisi yöntemi u...
Preprint
When two putative cryptic species meet in nature, hybrid zone analysis can be used to estimate the extent of gene flow between them. Two recently recognized cryptic species of banded newt (genus Ommatotriton) are suspected to meet in parapatry in Anatolia but a formal hybrid zone analysis has never been conducted. We sample populations throughout t...
Article
Understanding climatic variables to determine the ecological niche is crucial to explaining species distributions and revealing how sister species coexist within a geographic area. Here, we used ecological niche modeling to determine the ecological niche patterns of two toad species in Türkiye: Bufo bufo and Bufo verrucosissimus. Thus, we tested th...
Article
Ecological factors such as environment, habitat, and accompanying gradients affect the morphological characteristics of species. Different environmental conditions may induce phenotypic dissimilarities in populations of a species or between closely related species causing character evolution, or they may cause phenotypic plasticity as a response to...
Article
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...
Article
Full-text available
Comparative studies of mortality in the wild are necessary to understand the evolution of aging; yet, ectothermic tetrapods are underrepresented in this comparative landscape, despite their suitability for testing evolutionary hypotheses. We present a study of aging rates and longevity across wild tetrapod ectotherms, using data from 107 population...
Article
Full-text available
The geological and geographical settings of the Eastern Mediterranean have resulted in complex patterns of intraspecific diversifications and phylogeographical histories that can be observed in squamates. In this study, we examined genetic differentiation of the Collared dwarf racer (Platyceps collaris) using a multilocus genetic dataset with a sam...
Article
The Agamid lizard Trapelus ruderatus has a large distribution in western Asia. There is as yet neither a comprehensive molecular phylogeny nor morphological variation studies on populations of this species. In the present study, we aimed to evaluate the morphology and genetic attributes of this species from populations in Iran, Turkey, Syria, and I...
Article
Four samples of Vipera berus barani are recorded from Alaçam Village, Kestel/Bursa and Gölcüğez Village, Ünye/Ordu. The meristic and metric characteristics and the color-pattern features of the samples captured from additional localities are given in detail and compared with the specimens from other localities with regard to literature. A database...
Article
Full-text available
Anurans are the most suitable vertebrate group to see the development and also evolution in the skull, compared to other terrestrial vertebrates as they show highly derived morphology. For this reason, the cranium of anurans has been widely used for analyzing e.g., development and integration, evolutionary history, phylogenetic relationships, sexua...
Article
Full-text available
The Bufo bufo species group includes four species distributed in the western Palearctic: B. bufo , B. eichwaldii , B. spinosus and B. verrucosissimus . Both B. bufo and B. verrucosissimus are known to occur in Turkey, but their range boundaries and the taxonomic status of B. verrucosissimus are still uncertain. In this study, we analyzed the variat...
Article
Some life-history traits (body size, age at maturity, longevity, and growth) of Lyciasalamandra fazilae from two insular populations (Tersane Island and Domuz Island) living in the Mediterranean environment of southwestern Turkey were investigated. We applied phalangeal skeletochronology to obtain the ages of juveniles and adults. Age was determine...
Article
Full-text available
The age and growth in two breeding populations of A. danfordi, inhabiting altitudes ranging from 678 m a.s.l. to 1200 m a.s.l. in Turkey, were investigated. The age differences between sexes were not statistically significant in either population. The mean age was calculated as 8.73 ± 2.12 and 8.33 ± 1.8 years in Kozan and 7.25 ± 1.58 and 5.78 ± 1....
Article
Full-text available
Actuarial senescence has been viewed for a long time as an inevitable and uniform process. However, the work on senescence has mainly focused on endotherms with deterministic growth and low regeneration capacity during the adult stage, leading to a strong taxonomic bias in the study of aging. Recent studies have highlighted that senescence could in...
Article
Within reptiles, lizards cover less area across the globe than snakes do. One out of every seven known species of lizards in the world is found only in its type locality. Acanthodactylus harranensis Baran, Kumluta¸s, Lanza, Sindaco, Ilgaz, Avcı & Crucitti, 2005, is one of these species. It is an endemic lizard species in Turkey with a very small ar...
Article
Full-text available
Relationships between phylogenetic relatedness, hybrid zone spatial structure, the amount of interspecific gene flow and population demography were investigated, with the newt genus Triturus as a model system. In earlier work, a bimodal hybrid zone of two distantly related species combined low interspecific gene flow with hybrid sterility and heter...
Data
Parameter values and 95% confidence intervals (CI) in the Von Bertalanffy growth curves for Triturus populations. Parameter values and 95% confidence intervals (CI) in the Von Bertalanffy growth curves for Triturus populations in the west and southeast of the genus’ range. Triturus cristatus and T. marmoratus are hybridizing in a wide area of range...
Data
Skeletochronology results for Triturus macedonicus. Skeletochronology results for Triturus macedonicus from three populations in Montenegro, located away from areas in interspecific hybridization. The material is from the batrachalogical collection of the Institute of Biological Research “Siniša Stanković” and was collected in 1993–1996 (Džukić et...
Data
Genetic data for a hybrid newt population in Serbia.
Data
Skeletochronology results along with morphometric data and individual Structure scores.
Article
Full-text available
In this study, comparison of a life history traits (e.g. body size, age at maturity, longevity) of two populations of Phoenicolacerta laevis from different altitudes is being carried out (Anamur, 22 m a.s.l.; Andirin, 1.083 m a.s.l.) for the first time. We applied phalangeal skeletochronology to obtain the age of juveniles and adults. Age was deter...
Article
In this study, 10 families from 21 genera, including 23 amphibian and reptile species (2 urodels, 3 anurans, 1 tortoise, 6 lizards, and 11 snakes) were recorded in 27 different localities in research area. Rana macrocnemis, Eumeces schneideri, Heremites auratus, Telescopus fallax, and Zamenis hohenackeri were recorded in Tunceli Province for the fi...
Article
An albino specimen of Turkish worm lizard, Blanus strauchi, was collected from Paþayaylasý, Aydýn, Western Anatolia. Several morphological characters and pholidotic properties were determined. The specimen concerns the first record of total albinism in Blanus strauchi and the first case of albinism for the Turkish lizard fauna.
Poster
Full-text available
Scincidae is the biggest lizard family comprising more than 85 genera and 1579 species (Bauer, 1992; Hedges, 2014). The family was divided into four subfamilies by Greer (1970): Lygosominae, Scincinae, Acontinae and Feylininae. However, Pyron et al. (2013) has suggested a three subfamilial classification by transferring Feylininae into Scincinae. T...
Article
Full-text available
Here we present the age structure of a breeding Caucasian Salamander population from a high-altitude locality (Kazýkbeli Plateau, Kürtün, Gümüþhane; 2213 m a.s.l.). Age structure was analyzed by counting lines of arrested growth (LAG). Endosteal resorption raised difficulties of counting LAGs. Males were found to be average older than females. Rang...
Article
Full-text available
Speciation typically involves a stage in which species can still exchange genetic material. Interspecific gene flow is facilitated by the hybrid zones that such species establish upon secondary contact. If one member of a hybridizing species pair displaces the other, their hybrid zone would move across the landscape. Although theory predicts that m...
Data
Figure S1. Results of the geographical cline analyses for individual markers and transects. Results for the northern and southern transect are in the left and right column (see Fig. 3 for details). Clines are shown from top to bottom for Structure Q score, mtDNA haplotype frequency, and allele frequency for the 12 diagnostic (amot ‐ taf8) and six n...
Data
Table S1. Sampling details. Table S2. GenBank Accesion Numbers for mtDNA haplotypes. Table S3. Best fitting geographical cline models selected for the Structure Q score and the individual mtDNA and nuclear diagnostic (amot ‐ taf8) and semi‐diagnostic (chic ‐ wiz) markers. Table S4. Test whether there is more variation unaccounted for by the clin...
Article
According to Rensch’s rule, sexual size dimorphism (SSD) increases with body size in groups where males are the larger sex and decreases when females are larger. The genus Ommatotriton represents a well-defined lineage with male-biased SSD within a group of Eurasian newts otherwise characterised by females being larger than males. In the present pa...
Article
Full-text available
A new subspecies of the Anatolia Newt, Neurergus strauchii munzurensis n. ssp., is described from eastern Anatolia (Tunceli Province, Turkey). The new taxon differs from other related subspecies by its characteristic color pattern especially the number and diameter of spots on head, dorsum, tail and limbs. Its distribution is limited to the type lo...
Article
Full-text available
Facultative paedomorphism is generally observed in newts of the Lissotriton vulgaris group. We document two new records of paedomorphism in L. v. schmidtleri from localities near Evciler and Bayramiç, in the vicinity of Çanakkale, Turkey. We compare measurements of four paedomorphic individuals from two localities with measurements taken from the l...
Data
Full-text available
The distribution of Iranolacerta brandtii previously was limited to the Iran. Anew locality is reported here in eastern Turkey. Data based on meristic pholidosis characters, metric measurements and color-patter features of the specimens from eastern Turkey were given in detail and compared with data given in the previous literature. In addition, th...
Article
Using a geometric morphometric approach, we explored the variation in skull size and skull shape in banded newts (genus Ommatotriton). The genus Ommatotriton is represented by two allopatric, genetically well-defined species: Ommatotriton ophryticus and O. vittatus. Within each species, two subspecies have been recognised. The samples used in this...
Article
Full-text available
Application of taxonomy exclusively based on external morphology, molecular phylogeny and noninvasive anatomical investigation using micro CT scanning together is effective in resolving systematic problems, such as cryptic species. The external morphology, skull osteology and molecular phylogeny of Baran's black-headed dwarf snake, Rhynchocalamus b...
Article
Full-text available
In this study, new records of Neurergus strauchii (Steindachner, 1887) and Salamandra infraimmaculata Martens, 1885 species were given at different localities from Anatolia. Neurergus strauchii was recorded the first time from north of Murat River in Tunceli Province. Salamandra infraimmaculata samples were found Tunceli (Tağar Stream �Çemişgezek,...
Article
Full-text available
We measured body size (snout–vent length, SVL) for three populations of Ommatotriton ophryticus newts in Turkey and estimated age using the skeletochronological method. Age was determined by counting the lines of arrested growth in cross-sections taken from phalanges. SVL was similar among populations and ranged between 58.41 and 85.78 mm in males...
Article
Full-text available
The age structure of Eremias suphani was studied from a high-altitude (2180 m a.s.l.) locality in eastern Turkey. A total of 24 preserved (16♂♂, 7♀♀, and 1 juvenile) specimens were used in this study. According to the skeletochronological analysis, ages ranged from 6 to 9 years (mean: 7.38 ± 0.22 years) in males and from 6 to 10 years (mean: 7.86 ±...
Article
The distribution of Iranolacerta brandtii previously was limited to the Iran. Anew locality is reported here in eastern Turkey. Data based on meristic pholidosis characters, metric measurements and color-patter features of the specimens from eastern Turkey were given in detail and compared with data given in the previous literature. In addition, th...
Article
Full-text available
A new Lycian salamander subspecies, Lyciasalamandra flavimembris ilgazi subsp. nov., is described from southwestern Anatolia, Turkey. It differs from nominate subspecies by its characteristic color pattern, especially the ground color of the dorsum, tail, upper eyelids, and limbs. Its distribution is limited to the type locality (Kotekli, Muğla Pro...
Conference Paper
Salamanders have complex life cycles with a variety of life histories and developmental modes. In general, their biphasic cycle contains an aquatic larval form with limbs that are developing while in use and a metamorphosed terrestrial adult form with limbs that are functional in aquatic and terrestrial environments. The transition between two pha...
Article
Full-text available
Using skeletochronology, the age structure of a breeding population portion of Acanthodactylus boskianus (Daudin, 1802) from the southeast of Turkey was studied for the first time. A total of 21 preserved (9 male male, 8 female female, and 4 juveniles) specimens were used in this study. According to the analysis of the age structure based on counti...
Article
This study investigates amphibian and reptile species of Madran Mountain. Specimens were collected in September 2011 and April and May 2012. A total of 23 species (3 amphibians and 20 reptiles) were determined. These species are thought to contribute to our knowledge of the Turkish herpetofauna. In addition, a chorotype classification of the specie...
Article
Full-text available
The oriental green lizards of the Lacerta trilineata group are widely distributed in Greece, Anatolia, the eastern Mediterranean, the southern Caucasus, and the Zagros mountains in Iran. We studied their phylogeography using three mitochondrial markers with comprehensive sampling from most representatives of the group. Their phylogeny and divergenc...
Article
Aim: Diversification and rapid radiation are well documented in lacertid lizards. Niche conservation is frequently observed among related taxa, whereby niches will not change much during speciation events. Here, we investigate the relationship between environmental niche divergence and phylogenetic relatedness in a widespread group of green lizards...
Article
Full-text available
A broad sample of Darevskia rudis from the main part of its range was reviewed with regard to external morphology (discriminant, UPGMA, MST and ANOVA analyses) and osteology. Darevskia bithynica is raised to species rank, with two subspecies: D. b. bithynica and D. b. tristis. The other subspecies are fairly similar (D. r. rudis being the most diff...
Article
Full-text available
Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them. Knowledge of reptilian diversity remains surprisingly disparate, and innovative means of gaining rapid insight into the status of reptiles are needed i...
Article
Full-text available
A broad sample of Darevskia rudis from the main part of its range was reviewed with regard to external morphology (dis-criminant, UPGMA, MST and ANOVA analyses) and osteology. Darevskia bithynica is raised to species rank, with two subspecies: D. b. bithynica and D. b. tristis. The other subspecies are fairly similar (D. r. rudis being the most dif...
Article
In this study, we explore skull size and shape variation in the smooth newt, a taxon with substantial morphological differentiation and complex phylogeographic relations. By projecting phylogenies into the morphospace of the skull shape, we explore the variation in and differentiation of this complex morphological structure within a phylogenetic fr...
Article
Full-text available
Recently, the Urmia salamander, Neurergus crocatus Cope, 1862 was classified as a vulnerable species. The age structure of a breeding population portion of N. crocatus from Turkey was studied by using skeletochronology performed on the phalanges. According to the analysis of the age structure based on counting lines of arrested growth (LAGs), ages...
Article
Full-text available
We estimated differences in body size and age structure of two populations of Pelophylax ridibundus living at different altitudes in Turkey, one from Dörtyol (6 m a.s.l.) and the other from Karagöl (1480 m a.s.l.). Their age structure was determined by skeletochronology performed on the LAGs (lines of arrested growth) of the phalanges. While ages r...
Article
We measured body size of individuals from two populations of the southern crested newt, Triturus karelinii, from two localities at different altitudes (7 m, Klaros and 1373 m, Reşadiye) in Turkey. Lines of arrested growth (LAGs) recorded in phalanges were used to estimate the age of juveniles and adults. Females were on average larger than males in...
Article
Full-text available
Rhynchocalamus barani Olgun, Avcı, Ilgaz, Üzüm and Yılmaz, 2007 is a small colubrid snake previously known only from the type locality, 34 km east of Dörtyol, Hatay Province from Mediterranean Region of Turkey. A second new locality, Yayladağı, Hatay, Turkey, is reported here in the Mediterranean region of Turkey in this study. The new specimen cor...
Article
Full-text available
We described the phylogeny of the salamandrid genus Neurergus in Turkey using statistical analyses on morphometric characters and a molecular analysis based on 12S and 16S rRNA genes. Two different species, Neurergus crocatus and Neurergus strauchii (N. s. strauchii and N. s. barani), are reported from new localities. Morphologically, the only sign...
Article
Age structure, size, and growth patterns of the local population of the Caucasian Salamander, Mertensiella caucasica (Waga 1876) were determined by using skeletochronology. Lines of arrested growth (LAGs) recorded in phalanges were used to estimate the age of juveniles and adults. Results show that juveniles were from 1 to 3 years old. The average...
Article
We estimated the age, size, and growth patterns of the Southern Crested Newt, Triturus karelinii, from northwest Anatolia using skeletochronology. Lines of arrested growth (LAGs) recorded in phalanges allowed us to estimate the age of juveniles and adults. Results showed that age at maturity in this population was 3 years. The average ages of the m...