Publications by authors named "Aziz Avci"

It was aimed to determine the prevalence of Helicobacter in some reptilian and amphibian species in Türkiye and to describe the bacteria. For this purpose, 73 cloacal swab samples were used as material. The description of the isolates was performed by detailed phenotypic tests, whole genome analyses, and MALDI-TOF MS.

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Microplastics (MPs), tiny plastic particles less than 5 mm in size, have emerged as a common and worrying pollutant in marine, freshwater, and terrestrial environments worldwide. In this study, we revealed the microplastic exposure of two endemic newt species for Türkiye. We found that polyethylene terephthalate (PET) was the predominant microplastic polymer type in both species, with the blue fiber shape in particular.

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Article Synopsis
  • Cryptic diversity in species like Mediodactylus complicates biodiversity assessments and conservation, with past taxonomic changes highlighting hidden species.
  • Recent research identified five distinct species within the M. kotschyi complex using advanced genetic techniques, revealing some are endemic and possibly threatened.
  • A large-scale genomic analysis uncovered complex phylogenetic relationships and significant genetic differentiation among populations, suggesting the presence of even more undescribed species.
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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 ) are suspected to meet in parapatry in Anatolia, but a formal hybrid zone analysis has never been conducted. We sample populations throughout the range, with a focus on the supposed contact zone, and genotype them for 31 nuclear DNA SNP markers and mtDNA.

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  • This study explores the aging rates and longevity of ectothermic tetrapods, specifically nonavian reptiles and amphibians, using data from 107 wild populations across 77 species.
  • It investigates how factors like thermoregulatory methods, environmental temperature, and life history strategies influence demographic aging among these animals.
  • The findings reveal that ectotherms exhibit more diverse aging rates than endotherms and show instances of negligible aging, highlighting the importance of studying these species to better understand the evolution of aging.
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According to a large morphological dataset of specimens from Turkey to Iran and based on several morphological analyses, the Iranian populations of the skink Heremites vittatus are separated from other populations of this taxon in Turkey. The values of most of morphological characters were higher in the Turkish populations. Morphological variation among populations of H.

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Article Synopsis
  • Miniaturization in organisms, like dwarf snakes of the genus Eirenis, poses significant structural and functional challenges that affect their biology and feeding mechanisms.
  • A comparative study of the cranial structures of the larger Dolichophis schmidti and the smaller Eirenis species revealed differences in skull size and jaw muscle force, with Eirenis punctatolineatus showing intermediate traits.
  • The study found varying patterns of allometry in the gape index (jaw size relative to body size) between the different genera, suggesting that adaptations to miniaturization differ across these evolutionary lineages.
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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 ageing. Recent studies have highlighted that senescence could indeed display highly variable trajectories that correlate with species life-history traits.

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Background: The rat snake genus once comprised several dozens of species distributed in temperate through tropical zones of the New and Old World. Based on molecular-genetic analyses in early 2000s, the genus was split into several separate genera, leaving only 15 Palearctic and Oriental species as its members. One of the three species also occurring in Europe is , a robust snake from the Balkans, Anatolia, Caucasus, Ponto-Caspian steppes, and Levant that has been suspected to be composed of two or more genetically diverse populations.

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Kotschy's Gecko, Mediodactylus kotschyi, is a small gecko native to southeastern Europe and the Levant. It displays great morphological variation with a large number of morphologically recognized subspecies. However, it has been suggested that it constitutes a species complex of several yet unrecognized species.

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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.

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Article Synopsis
  • Morphological and DNA analyses indicate that the East Mediterranean snake-eyed skink, Ablepharus kitaibelii, comprises a complex of four distinct species, highlighting the need for a re-evaluation of its taxonomy.
  • Using Bayesian and Maximum Likelihood methods, researchers established phylogenetic relationships based on mitochondrial and nuclear DNA markers, while also exploring the biogeographic history of the species complex through various phylogeographic analyses.
  • Findings reveal significant genetic diversity and instances of non-monophyletic species, with evidence suggesting a potential new species, as well as an origin for the complex in Anatolia during the Middle Miocene, shaped by geological events.
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The Near and Middle East is a hotspot of biodiversity, but the region remains underexplored at the level of genetic biodiversity. Here, we present an extensive molecular phylogeny of the viperid snake genus Montivipera, including all known taxa. Based on nuclear and mitochondrial data, we present novel insights into the phylogeny of the genus and review the status of its constituent species.

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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.

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Article Synopsis
  • * Research into Apathya’s taxonomy and evolutionary history used genetic analysis, uncovering significant morphological and genetic variations within the genus, suggesting a need for taxonomic revision.
  • * The study indicates that the current distribution of Apathya is influenced by historical geological events, including the movement of the Arabian plate and the development of mountain ranges, dating back to the Miocene and Pleistocene epochs.
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