|Issue № 2||
|PhD, docent, Dagestan state University, firstname.lastname@example.org|
|Dagestan state University, email@example.com|
Summary: The article presents data on the current state of the spur-thighed tortoise, Testudo graeca populations from the Caspian region of Dagestan (North Caucasus). According to the latest literature data the subspecies T. g. armeniaca is widespread in the region. In Dagestan the spur-thighed turtle lives on the northern periphery of its range. The regional range of the species included the coast of the Caspian Sea ("Coastal lowland") and the adjacent foothills up to 700 m above sea level to the border with Azerbaijan. The area size is approximately 418100 ha. Since the end of the 20th century, there has been a decrease of the number and fragmentation of the range in Dagestan, as well as in general within the species range due to the impact of anthropogenic factors. On the coast of the Caspian Sea, the current number of turtles is 1 individuals per ha, in the foothills – about 0.21 ind./ha. In this connection, in 2013–2019 we studied the current distribution and abundance of tortoises in the preserved habitats within the study area. We have identified the most optimal habitats for this species, where populations with good reproductive potential have been preserved. According to our data, two isolated tortoise habitats have been preserved on the Costal lowland in the Samura delta and in the vicinity of Lake Adji (Papas), and three in the foothills – in the Shurdere area, in the vicinity of the village of Shalasi and on the slopes of the Narat-Tube ridge. Currently, the total area of the preserved habitats of this species in the region is about 106600 ha, that of degraded ones – 311500 ha. The main anthropogenic factor contributing to the sharp reduction in the number of tortoises is the destruction of their natural habitats, due to of the operation of numerous quarries for the extraction of sand, soil, gravel and stones on an industrial scale. The article provides recommendations for the preservation of the spur-thighed tortoise in the region.
© Petrozavodsk State University
Received on: 21 July 2020
Published on: 21 June 2021
Abstract of the flora of Dagestan. Volume I–IV. Answ. Ed. Corr. RAS R. V. Camelin. Makhachkala, The Epoch Publishing House.
Fritz, U., Harris, D. J., Fahd, S., Rouag, R., Martínez, E. G., Casalduero, A. G., Siroky, P., Kalboussi, M., Jdeidi, T. B., Hundsdorfer, A. K. (2009): Mitochondrial phylogeography of Testudo graeca in the western Mediterranean: old complex divergence in North Africa and recent arrival in Europe. Amphibia–Reptilia. 30:63–80. URL: https://doi.org/10.1163/156853809787392702
Fritz, U., Hundsdorfer, A. K., Siroky, P., Auer, M., Kami, H., Lehmann, J., Mazanaeva, L. F., Turkozan, O., Wink, M. (2007): Phenotypic plasticity leads to incongruence between morphology-based taxonomy and genetic differentiation in western Palaearctic tortoises (Testudo graeca complex; Testudines, Testudinidae). Amphibia–Reptilia. 28:97–121. URL: https://doi.org/10.1163/156853807779799135
Heyer, V. R., Donnelly, M. A., McDyermid, R. V., Hayek, L, E. S., Foster, M. S. (2003): Measurement and monitoring of biological diversity: standard methods for amphibians. M., KMK. 380 p.
Korsunenko, A., Vasilyev, V., Pereshkolnik, S., et al. (2005): DNA polymorphism and genetic differentiation of Testudo graeca, Russ. J. Herpetol. 12:40–42.
Leontyeva, O. A., Gallamov, R. R., Slavinskaya, I. V. (1998): Comparative ecological and morphological characteristics of Testudo graeca nikolskii and g. ibera in the Caucasus. Miaud C. and Guyetant R. eds. Le Bourget du Lac. France, SEH.
Makhtadze L. B. Prilipko L. I. in Russian.
Mashkaryan, V., Vamberger, M., Arakelyan, M., et al. (2013): Gene flow among deeply divergent mtDNA lineages of Testudo graeca (Linnaeus, 1758) in Transcaucasia, Amphibia–Reptilia. URL: https://doi.org/10.1163/15685381-00002895
Mazanaeva, L. F. (2001): Distribution, state of populations and problems of protection of Testudo graeca ibera in Dagestan (the south-eastern north Caucasus, Russia). Chelonii. 3:59–66.
Novikov, G. A. (1949): Field studies of the ecology of terrestrial vertebrates. M., Soviet science. 662 p.
Parham, J. F., Turkozan, O., Stuart, B. L., Arakelian, M., Shafei, S., Macey, J. R., Werner, Y. L., Papenfuss, Th. J. (2006): Genetic Evidence for Premature Taxonomic Inflation in Middle Eastern Tortoises. Procedings of the California Academy of Sciences (fourth series). 57(33):955–964.
Red Book of Animals of the Republic of Armenia. (2010): Yerevan: Zangak.
Rhodin, A. G. J., Iverson, J. B., Bour, R., Fritz, U., Georges, A., Shaffer, H. B., van Dijk, P. P. (2017): Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status. Conservation Biology of Freshwater Turtles and Tortoises. 8th Ed. Chelonian Research Monographs. URL: https://doi.org/10.3854/crm.7.checklist.atlas.v8.2017
SR. in Russian
Shcherbak N. N. (1989): Quantitative accounting. Guide to the study of amphibians and reptiles. Kiev. P. 121–125.
Shlyahtin, G. V. (1986): Methods of field research on the ecology of amphibians and reptiles, G. V. Shlyahtin, V. L. Golikova. Saratov, Saratov University Publishing House. 77 p.
The Red Book of Azerbaijan (2013): Baku, Institute of Zoology, National Academy of Science. 493 p. (in Azerbaydzhan).
The Red Data Book of the Georgian SSR: Rare and Endangered Species of Animals and Plants (1982): Some monuments are not logged of nature. Tbilisi, Sabchota Sakartvelo. 255 p.
The Red Data Book of the Russian Federation. Animals (2001): M., AST-Astrel. 862 p. (in Russian).
Van der Kuyl, A. C., Ballasina, D. L. Ph., Dekker, J. T., Maas, J., Willemsen, R. E., Goudsmit, J. (2002): Molecular Phylogenetics and Evolution. 22(2):174–183. URL: https://doi.org/10.1006/mpev.2001.1052
Vasilyev, V. A., Bondarenko, D. A., Peregontsev, E. A., et al. (2008): Polymorphism of the 12S rRNA gene and phylogeography of the Central Asian tortoises Agrionemys horsfieldii Gray, 1844, J. Genet. 44(6):682–685. URL: https://doi.org/10.1134/S1022795408060070
WF. in Russian
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