пресмыкающиеся

Reptile communities of desert landscapes and analysis of the herpetofauna of Southeastern Kazakhstan

Authors: Bondarenko D. A., Dujsebayeva T. N.

We used the route method to carry out quantitative counts of reptiles in nine regions of Southeastern Kazakhstan. The results yielded data on the population density of reptiles in fourteen habitats. We observed the greatest diversity of species and the largest number of reptiles in sandy deserts. Both measures were much smaller in loamy plains and low mountains. In desert habitats, the Central Asian tortoise Agrionemys horsfieldii and the rapid racerunner Eremias velox were more common than other species.

Distribution of reptiles in Northwestern Turkmenistan

Authors: Shestopal A. A., Shcherbina A. A.

The article analyzes the modern distribution of reptiles in Northwestern Turkmenistan. According to literary data and observations of the authors, 36 species of reptiles have been recorded in the region, including one new species Alsophylax sp. Two species (Eryx elegans and Trachylepis septemtaeniata transcaucasica) are excluded from the list of herpetofauna of the region.

Sexual differences in the morphometric traits of the black forest-steppe viper, Pelias berus nikolskii (Vedmederja, Grubant et Rudaeva, 1986) (Viperidae, Reptilia), from the Voronezh region

Authors: Ushakov M. V.

We studied sexual dimorphism in the black forest-steppe viper, Pelias berus nikolskii (Vedmederja, Grubant et Rudaeva, 1986), inhabiting the Voronezh region. From 2008 to 2017, 118 snakes were captured, of which 84 were males and 34 were females. Body length, tail length, and five head measurements were taken from the individuals was calculated. Analysis of Covariance showed that males and females differed in all traits except the greatest width of the head and head length.

Reptiles of the Southwestern Tajikistan desert plains: Spatial distribution, population density and communities structure

Authors: Bondarenko D. A., Ergashev U. H.

Population density of reptiles in four desert areas of southwestern Tajikistan was estimated in spring 2018–2019. The structure of reptile communities in seven typical landscapes was described. The highest species diversity and population density were observed in sandy landscapes. Seven species of psammobionts formed the basis of these reptile communities.

INTRODUCTION OF AMPHIBIANS AND REPTILES IN THE CAUCASUS AND CRIMEA: AN OVERVIEW AND SOME ACTUAL DATA

Authors: Kukushkin O. V., Doronin I. V., Tuniyev B. S., Ananjeva N. B., Doronina M. A.

An overview of the cases of introduction (both accidental and intentional) of amphibians and reptiles in the Caucasus and Crimea is provided. The introduction cases are systemized in accordance with the goals and ways of introduction and with regards to the expected scale of the impact and its nature. No negative consequences of the introduction of amphibian and reptile species in the Crimea and Caucasus are currently observed on any of the known examples. No cases of species naturalization, which the “invasion” term can be applied to, have been revealed.

CURRENT PROBLEMS OF STUDYING THE LATE CENOZOIC HISTORY OF AMPHIBIANS AND REPTILES FROM THE PALEONTOLOGICAL VIEWPOINT

Authors: Ratnikov V. Y.

When studying the late Cenozoic history of amphibians and reptiles, a number of problems arise, associated with obtaining and interpretation of factual material. First of all, the author considers peculiarities of obtaining and identifying fossil material, which strongly affects the amount and quality of paleontological data. Most biologists are not familiar with them. These are problems of taphonomy, demand, economy, personnel, collection and systematic problems.