Polynova G., Mishustin S., Polynova O. Spatial structure of the spotted toad agama (Phrynocephalus guttatus guttatus, Agamidae) population in the conditions of overgrowth of semi-deserts in the Astrakhan region // Principy èkologii. 2022. № 1. P. 92‒110. DOI: 10.15393/j1.art.2022.12202

Issue № 1

Original research


Spatial structure of the spotted toad agama (Phrynocephalus guttatus guttatus, Agamidae) population in the conditions of overgrowth of semi-deserts in the Astrakhan region

   Galina Vyacheslavovna
PhD, Associate professor, Peoples’ Friendship University of Russia, galinapolynova@mail.ru
   Stanislav Sergeevich
Armed forces infrastructure development directorate general, s1kator@mail.ru
   Olga Evgenievna
PhD, Associate professor, Peoples’ Friendship University of Russia, olgapolynova@yandex.ru
spatial structure
Phrynocephalus guttatus guttatus
spotted toad agama
population reduction
sand overgrowth
sand semi-deserts
Summary: The decrease in the number of many reptile species as a result of overgrowth of sandy deserts and semi-deserts is a widespread phenomenon in modern conditions. To understand the prospects of this process, it is necessary to study the mechanisms of population adaptation to changes in the biotope. Such a mobile and effective mechanism is, first of all, a change in the spatial structure of the population, the study of which does not cease to be relevant. The purpose of this study was to clarify the changes occurring in the spatial structure of the spotted toad agama, Phrynocephalus guttatus guttatus (Gmelin, 1789), and their relationship with the developing process of overgrowth of sandy semi-deserts in the Astrakhan region. The data were collected during the 2010–2014 and 2017–2019 field seasons. The place of research was a section of sandy semi-desert near the village of Dosang (46°54'08.7264"N, 47° 54'52.5312"E). In the work, standard methods were used: marking, sex and age determination, mapping of meetings and movements, identification of sedentary and migrating individuals. Investigation of overgrowth processes was based on the description of geobotanical sites. Statistical processing was carried out based on the Mann-Whitney U-test. Software consisted of a set of standard programs, Adobe illustrator and Yandex Map Constructor. The analysis of long-term studies of the spatial structure of the grouping allowed us to build a model of adaptation of the population to the reduction of characteristic habitats. At the initial stages of overgrowth of semi-fixed sands, there was a general increase in the mobility of animals, expressed in an increase in the number of individuals migrating in search of a suitable biotope. The reduction of the biotope caused the re-consolidation of the sedentary population of the grouping. This process occurred during the third and fourth seasons of research. Over-compaction was followed by a decrease in the rate of reproduction, manifested in a reduction in the number of immature individuals. As a result, the combination of factors led to a further decrease in the number of individuals (the fifth year of observations). The ongoing process of overgrowth and the reduction in the number for the tenth year of research resulted in the disintegration of the grouping into parts and a decrease in the population as a whole. The general decrease in the population was confirmed by observations in the adjacent territory and the almost complete disappearance of migrants in the grouping.

© Petrozavodsk State University

Reviewer: V. A. Cherlin
Received on: 19 November 2021
Published on: 15 April 2022


Ananjeva N. B., Tuniyev B. S. Historical biogeography of the Phrynocephalus species of the USSR, Asiatic Herpetol. Res. 1992. Vol. 4. P. 76–98.

Arnold E. N. Ecology of lowland lizard in the eastern United Arab Emirates, J. Zool. (Lond.). 1984. Vol. 204 (3). P. 329–354.

Badmaeva V. I. Lizards of Kalmykia: Avtoref. dip. … kand. biol. nauk. Kiev, 1983. 24 p.

Bondarenko D. A. Peregoncev E. A. Abdunazarov B. B. Sudarev V. O. On the modern condition of herpetofauna of the sand massifs of the Fergana Valley (Uzbekistan), Gerpetologicheskie issledovaniya v Kazahstane i sopredel'nyh stranah: Sbornik nauchnyh statey, Pod red. T. N. Duysebaevoy. Almaty: ASBK SOPK, 2010. P. 246–248.

Bondarenko D. A. Ecology of the hentown toad agama in the summer-autumn period, Vestnik zoologii. 1982. No. 5. P. 55–59.

Brown J. L. The evolution of diversity in avian territorial systems, Wilson Bull. 1964. Vol. 76. P. 160–169.

Brushko Z. K. Lizards of the deserts of KazakhstanAlmaty: Konzhyk, 1995. 231 p.

Burt W. H. Territoriality and home range concepts as applied to mammals, Journal of Mammalogy. 1943. Vol. 24 (3). P. 346–352. DOI: 10.2307/1374834.

Darevskij I. S., Terentev P. V. Estimation of energy flow through amphibian and reptile populations, Secondary Productivity in Terrestrial Ecosystems. 1967. Vol. 1. P. 181–197.

Debelo P. V. Amphibians and reptiles of the Ural-Kaspian regionEkaterinburg: RIO UrO RAN, 2013. 400 p. (Seriya: Prirodnoe raznoobrazie Uralo-Kaspiyskogo regiona. T. III).

Ellison N., Hatchwell B. J., Biddiscombe S. J., Napper C. J., and Potts J. R. Mechanistic home range analysis reveals drivers of space use patterns for a non-territorial passerine, Journal of Animal Ecology. 2020. Vol. 89 (12). DOI: 10.1111/1365-2656.13292.

Fretwell S. D., Lucas H. L. On territorial behavior and other factors influencing habitat distribution in birds. 1. Theoretical development, Ibis. 1969. Vol. 19. P. 16–36.

Galán P. Structure of a population of the lizard Podarcis bocagei in northwest Spain: variations in age distribution, size distribution and sex ratio, Animal Biology. 2004. Vol. 54, No. 1. P. 57–75.

Guillaume Bastille Rousseau, Jonathan R Potts, James A Schaefer, Mark A Lewis, E Hance Ellington, Nathaniel D Rayl, Shane P Mahoney, Dennis L Murray. Unveiling trade-offs in resource selection of migratory caribou using a mechanistic movement model of availability, Ecography. 2015. Vol. 38 (10). P. 1049–1059.

Krause J., James R. & Croft D. P. Personality in the context of social networks, Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences. 2010. Vol. 365 (1560). P. 4099–4106.

Lotiev K. Yu. Bathiev A. M. On the dergadation of the turan herpeto-faunistic complex in the Tersky sand massif (Eastern Pre-Caucasus), Izvestiya vysshih uchebnyh zavedeniy. Povolzhskiy region. Estestvennye nauki. 2019. No. 2 (26). P. 115–128.

Mayhew W. W. Biology of the granite spring lizard, Sceloporus orcutti, Amer. Midl. Nat. 1963. Vol. 69, No. 2. P. 310–327.

Mishustin S. S. Polynova G. V. The influence of predation on the number of steppe runner in the semi-deserts of the southeastern part of the Low Valga region, Uchenye zapiski Kazanskogo universiteta. Seriya: Estestvennye nauki. 2020. T. 162, No. 3. P. 461–472. DOI: 10.26907/2542-064X.2020.3.461-472.

Moorcroft P. R., & Lewis M. A. Mechanistic home range analysis. Princeton, NJ: Princeton University Press, 2006. 192 p.

Moorter B. V., Visscher D., Benhamou S., Börger L., Boyce M. S., & Gaillard J, M. Memory keeps you at home: A mechanistic model for home range emergence, Oikos. 2009. Vol. 118 (5). P. 641–652. DOI: 10.1111/j.1600-0706.2008.17003.x.

Mouquet N. and Loreau M. Community patterns in source-sink metacommunities, American Naturalist. 2003. Vol. 162 (5). P. 544–557.

Perry G., Garland T., Jr. Lizard home ranges revised: effects of sex, body size, diet, habitat, and phylogeny, Ecology. 2002. Vol. 83 (7). P. 1870–1885.

Pianka E. R., Parker W. S. Ecology of horned lizards: a review with special reference to Phrynosoma platyrhinos, Copeia. 1975. No. 1. P. 141–162.

Polynova G. V. Bazhinova A. V. Polynova O. E. Dynamics of mature population of spotted toad agama (Phrynocephalus guittatus guittatus Gmel.) in the sand semi-deserts of the Astrakhan region, Vestnik RUDN. Seriya: Ekologiya i bezopasnost' zhiznedeyatel'nosti. 2014. No. 4. P. 11–24.

Polynova G. V. Mishustin S. S. Polynova O. E. Dynamics of herpetocomplex of the sand deserts of the Astrakhan region, Izvestiya vysshih uchebnyh zavedeniy. Povolzhskiy region. Estestvennye nauki. 2019. No. 2 (26). P. 150–163. DOI: 10.21685/2307-9150-2019-2-15.

Polynova G. V. Mishustin S. S. Change in the spatial structure of the steppe runner population Eremias arguta deserti (Gmelin, 1789) in semi-ddeserts of the Astrakhan region, Principy ekologii. 2020. No. 2 (36). P. 87–96.

Pulliam H. R. On the relationship between niche and distribution, Ecology Letters. 2000. Vol. 3. P. 349–361.

Rose B. Lizard home range: methodology and functions, J. Herpetol. 1982. Vol. 16 (3). P. 253–269.

Saraev F. A. Pestov M. V. To the inventory of reptiles of northern and north-eastern Caspian, Gerpetologicheskie issledovaniya v Kazahstane i sopredel'nyh stranah: Sbornik nauchnyh statey, Pod red. T. N. Duysebaevoy. Almaty: ASBK – SOPK, 2010. P. 172–191.

Semenov D. V. Comparative aspects of the spatial ecology of lizards: on the example of toad agama (Reptilia, Agamidae, Phrynocephelus), Zhurnal obschey biologii. 2007. T. 68, No. 5. P. 379–393.

Shenbrot G. I., Semenov D. V. Some biological peculiarities of Phrynocephalus (Agamidae), Studies in Herpetology, Ed. Z. Rocek. Prague, 1986. P. 579–582.

Shilov I. A. Ecologo-physiological fundamentals of population relations in animals. M.: Moskovskiy universitet, 1977. 261 p.

Stamps J. F. Social behavior and special pattern in lizards, Biology of the reptilian. Vol. 7: Ecology and behavior. New York: Akad. Press, 1977. P. 265–334.

Tabachishin V. G. Zav'yalov E. V. Tabachishina E. I. Spatial destribution of steppe runner Eremias argute (Pallas, 1776) in the North of the area in the Volga region, Sovremennaya gerpetologiya. 2006. T. 5/6. P. 117–124.

Tabachishin V. G. Spatial distribution and abundance trends of spotted toad-headed agama, Phrynocephalus guttatus, in its northern habitat region, Sovremennaya gerpetologiya. 2010. T. 10. Vyp. 3/4. P. 155–156.

Tertyshnikov M. F. Individual territory of sand lizard (Lacerta agilis) and steppe runner (Eremias arguta) and the features of its use, Zoologicheskiy zhurnal. 1970. T. 49. Vyp. 9. P. 1377–1385.

Tinkle D. W., Woodward D. W. Relative movements of lizards in natural populations as determined from receptive radii, Ecology. 1967. Vol. 48, No. 1. P. 166–168.

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