Article 11219

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Lebedinskii Andrey Artem'evich, Candidate of biological sciences, associate professor, sub-department of botany and zoology, Lobachevsky State University of Nizhny Novgorod (23 Gagarina avenue, Nizhny Novgorod, Russia), E-mail: 

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Background. The study is based on data obtained from samples of common frogs from a population located in the city of Nizhny Novgorod, in the mountainous part of the Starki River floodplain. A route close to the bridge on Vaneeva Street. The relevance is due to the strengthening of the urbanization process.
Materials and methods. Multiple surveys of the route with a throughput of one to five meters were carried out. Counting was conducted during the hours of the greatest activity of frogs with an interval of several days 2–3 hours a day. All frogs were measured according to the standard scheme using a caliper. Sex adult individuals was determined by detecting marital calluses characteristic of males. A comparative analysis of samples of the common frog population was carried out for various parameters: morphological, phenotypic and sex-age characteristics. In addition, the relative size of the population was calculated.
Results. Based on the calculations, it was concluded that the sex-age structure of the samples studied is close to optimal: the sex ratio among adults is close to 1:1. The statistical analysis of morphometric data and the evaluation of polymorphism indicate that this population is stable, viable with a stable species abundance. 

Key words

common frog, urbanized territory, population’s adaptations 


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