Articles

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

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.

STRUCTURAL DYNAMICS OF THE SPAWNING ANURAN TAXOCENOSES IN FLOODPLAIN LAKES OF THE MEDVEDITSA RIVER VALLEY (SARATOV REGION)

The structure of the spawning anuran taxocenoses in five floodplain lakes in the Medveditsa river valley in 2009 - 2016 was analyzed. Degradation of the populations of the three most numerous species and a decreased degree of dominance of the spadefoot toad were established. This degradation strongly affects the species with a longer distance of spawning migrations - the severity of the changes sequentially decreases in the row: Pelophylax ridibundus → Pelobates fuscus → Bombina bombina. The structural parameters in the lakes of Lebyazhye and Koblovo were stable.

DISTRIBUTION OF THE CENTRAL ASIAN TORTOISE AGRIONEMYS HORSFIELDII (GRAY, 1844) IN UZBEKISTAN (RANGE, REGIONAL AND LANRSCAPE DISTRIBUTION, POPULATIONS DENSITY)

The Central Asian tortoise distribution in Uzbekistan is described on the basis of our analysis of findings at 287 localities. All these localities with their locations have been mapped. The history of the propagation and formation of the habitat of the species is provided. It has been revealed that the tortoise is widely settled in desert landscapes. The area of its habitat is 67% of the territory of the republic (about 300,000 sq. km). However, the territory with higher population densities (> 10 animals per ha) occupies about 0.6% of this territory.

ANNONATED LIST OF AMPHIBIAN AND REPTILE SPECIES OF THE FAR EAST RUSSIA

An annotated list of amphibian and reptile species of the Russian Far East is presented with due account of modern data on the taxa systematics. 13 Amphibian species and 27 reptile ones have been reliably registered by now, including several random sea species.

PRELIMINARY DATA ON THE MOLECULAR GENETIC STRUCTURE OF PELOPHYLAX RIDIBUNDUS (AMPHIBIA: ANURA: RANIDAE) FROM THE SOUTHERN PART OF THE CRIMEAN PENINSULA, BASED ON MITOCHONDRIAL AND NUCLEAR DNA ANALYSIS

Molecular genetic analysis of 28 marsh frogs Pelophylax ridibundus complex from 12 localities of the Crimean peninsula was conducted by two molecular markers, namely, COI, the gene of the first subunit of cytochromeoxydase mtDNA, and SAI-1, the first intron of the serum albumin gene nDNA. It has been found that the mtDNA type specific for the “eastern” form (the Anatolian P. cf. bedriagae) prevails for the Crimean marsh frogs, while the mtDNA type of the “western” form (the Central-European P.

COMPARATIVE DATA ON THE LEUKOCYTIC BLOOD FORMULA OF VIPERA BERUS AND VIPERA RENARDI

The leukocytic formulae of the peripheral blood of Vipera berus (Linnaeus, 1758) from the Samara region (Samara City) and Vipera renardi (Christoph, 1861) from the Saratov region (Khvalynsk district) were studied. Some features of the leukocytic blood composition of the species studied were revealed, manifested by the predominance of a specific component in the immune reactions of Vipera berus, in comparison with Vipera renardi.

FEATURES OF POST-WILDFIRE RECOVERY OF FOREST HERPETOCOMPLEXES AS A CONSEQUENCE OF PHYSICAL AND GEOGRAPHICAL PECULIARITIES OF THE TERRITORY (ON AN EXAMPLE OF THE KERZHENSKY NATURE RESERVE)

Field research was conducted on the Kerzhensky Nature Reserve territory (the Nizhny Novgorod region, Russia) in 2012-2013 to analyze the influence of the 2010 forest wildfires on the populations of amphibians and reptiles and to reveal features of their post-wildfire recovery. The recovery of the herpetocomplexes on the territories subjected to surface/crawling and controlled fires was found to occur during no more than two years, whereas crown/canopy fires with complete vegetation destruction required three years for recovery.

LABORATORY REPRODUCTION OF THE CUBAN TOAD, PELTOPHRYNE EMPUSA COPE, 1862

The paper presents data on reproduction of the Cuban toad, Peltophryne empusa in laboratory conditions. Spawning was stimulated by surfagon injection. The start of spawning was observed at a temperature of 27.0 - 27.5°C in the early morning after 10 - 12 h after the hormonal injection. The female fertility ranged from 2,415 to 7,343 eggs. Incubation lasted 12 - 24 h. The total embryogenesis duration from egg laying to the start of exogenous feeding of larvae was about 2 days. The larval development of the Cuban toad lasted from 27 to 64 days.

PHOLIDOSIS VARIATIONS OF THE SAND LIZARD LACERTA AGILIS (LINNAEUS, 1758) AND COMMON LIZARD ZOOTOCA VIVIPARA (LICHTENSTEIN, 1823) FROM THE WESTERN PART OF THE TATARSTAN REPUBLIC

The paper considers qualitative and quantitative characteristics of pholidosis variations in two lizard species, comparative analysis of these indices at both intraspecific and interspecific level is carried out. 45 and 19 types of deviations were observed in the sand lizard and common lizard respectively. Variations of the labial, supraocular and supraciliar, frontonasal, parietal, occipital and ventral scales are more common in both species. The sand lizards from the Spassky region differ from the others by some indices.

DEVELOPMENT OF URBANIZED AREAS AND HERPETOFAUNA CONSERVATION PROSPECTS (ON AN EXAMPLE OF KAZAN CITY)

During the field season of 2014, research was conducted on 5 areas planned for organizing protected areas in Kazan City. The examined areas were found to be important for preserving the diversity of amphibians and reptiles in the city. Of major concern is preservation of the northern crested newt (Triturus cristatus Laurenti, 1768) and the common toad (Bufo bufo, Linnaeus, 1758) in those territories, the species listed in The Red Data Book of the Republic of Tatarstan.

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