Seasonal Diet Variations of the Sand Lizard (Lacerta agilis) (Lacertidae, Reptilia) in the Northern Lower-Volga Region
https://doi.org/10.35885/1684-7318-2019-3-396-401
Abstract
The feeding of Lacerta agilis was studied by means of the content analysis of lizards' stomachs conducted in the vicinity of Saratov City from April till September 1983, 2003 and 2007. The maximum daily diet was characteristic in July and reached 2.5–2.7 g/day, while the minimum one was in April and September (1.1–1.2 g/day). The highest and lowest numbers of food objects were recorded in May and September, respectively. Insects are the basic food objects of L. agilis, their occurrence frequency being 100% during the whole active-life period. Coleoptera representatives predominated in the diet (25.4–40.5% by number, 43.5–70.9% by weight). The fractions of Lepidoptera, Hymenoptera, Diptera, etc. were somewhat lower. Well-flying and quickly-moving insects predominated in the food spectrum of L. agilis. Rather many invertebrates with cryptic colour, poisonous, stinging and badly smelt ones were frequently met among the nutrition objects. Moreover, vegetable remains (seeds, leaves, flower fragments etc.) and various small stones to act probably as gastrolytes were found in many stomachs.
Supporting agencies: The authors are grateful to Prof. Vasily Anikin (Saratov State University, Department of Biology) and Dr. Yury Arzanov (Rostov State University, Zoological Museum) for their help in specific analysis of insect remains.
About the Authors
G. V. Shlyakhtin
Saratov State University
Russian Federation
Russian Federation
Gennady V. Shlyakhtin.
83 Astrakhanskaya St., Saratov 410012.
V. G. Tabachishin
Saratov branch of A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences
Russian Federation
Russian Federation
Vasily G. Tabachishin.
24 Rabochaya St., Saratov 410028.
M. V. Yermokhin
Saratov State University
Russian Federation
Russian Federation
Mikhail V. Yermokhin.
83 Astrakhanskaya St., Saratov 410012.
References
1. Amat F., Llorente G. A., Carretero M. A. Reproductive cycle of the sand lizard (Lacerta agilis) in its southwestern range. Amphibia–Reptilia, 2000, vol. 21, pp. 463–476.
2. Chernomordikov V. V. On inborn and acquired nutrition reactions of reptiles. Doklady AN USSR, 1944, vol. 43, no. 4, pp. 181–184 (in Russian).
3. Díaz J. A., Carrascal L. M. Variation in the effect of profitability on prey size selection by the lacertid lizard Psammodromus algirus. Oecologia, 1993, vol. 94, pp. 23–29.
4. Galitsyn D. I. Sand lizard (Lacerta agilis L.) nutrition ecology in the Middle Ural populations. Izvestia of Samara Scientific Center of the Russian Academy of Sciences, 2014, vol. 16, no. 5, pp. 413–417 (in Russian).
5. Hammer O., Harper D. A. T., Ryan P. D. PAST: Palaeontological Statistics software packege for education and data analysis. Palaeontological Electronica, 2001, vol. 4, no. 1, pp. 1–9.
6. Legler J. M., Sillivan L. J. The application of stomach-flushing to lizards and anurans. Herpethologica, 1979, vol. 35, iss. 2, pp. 107–110.
7. Lukina G. P., Zharkova V. K., Schepotev N. V., Bulakhova V. L., Konstantinova N. F., Scherbak N. N., Tertyshnikov M. F., Rashkevich N. A., Khonyakina Z. P., Kutuzova V. A., Scherban M. I., Bochenko V. E., Streltsov A. B., Okulova N. M., Kozlov V. I., Utrobina N. M. Nutrition. In: A. V. Yablokov, ed. Sand lizard. Moscow, Nauka Publ., 1976, pp. 179–213 (in Russian).
8. Pincheira-Donoso D. Testing the accuracy of fecal-based analyses in studies of trophic ecology in lizards. Copeia, 2008, vol. 2008, pp. 322–325.
9. Pitt W. C., Ritchie M. E. Influence of prey distribution on the functional response of lizards. Oikos, 2002, vol. 96, pp. 157–163.
10. Schepotev N. V. On the economical significance of sand lizard (Lacerta agilis exigua Eichw.) in field-protection forest bands. Zoologicheskii zhurnal, 1952, vol. 31, pp. 574–583 (in Russian).
11. Schepotev N. V. On the study of sand lizard populations in Lower-Volga forest-steppes. Zoologicheskii zhurnal, 1948, vol. 27, iss. 4, pp. 34–37 (in Russian).
12. Shlyakhtin G. V. Nutrition Ecology and Adaptive Peculiarities of Digestive Tract of Hibernating Vertebrates. Thesis Diss. Dr. Sci. (Biol.). Saratov, 1987. 24 p. (in Russian).
13. Shlyakhtin G. V., Golikova V. L. A Technique of Field Surveys of Amphibian and Reptile Ecology. Saratov, Izdatel'stvo Saratovskogo universiteta, 1986. 78 p. (in Russian).
14. Shlyakhtin G. V., Tabachishin V. G., Zavialov E. V., Tabachishina I. E. Fauna of Saratov region: Amphibians and reptiles. Saratov, Izdatel'stvo Saratovskogo universiteta, 2005. 116 p. (in Russian).
15. Shlyakhtin G. V., Tabachishin V. G., Zavialov E. V. Nutrition ecology of Sand Lizard (Lacerta agilis) in the north of the Lower Volga region. Current Studies in Herpetology, 2006, vol. 5–6, pp. 93–99 (in Russian).
16. Tertysnikov M. F. Reptiles of Central PreCaucasian. Stavropol, Stavropolserviceshkola Publ., 2002. 240 p. (in Russian).
17. Vorobiova E. I., Chugunova T. Yu. Dental System of Lizards. Taxonomic and Ecological Diversity. Moscow, Nauka Publ., 1995. 152 p. (in Russian).
18. Yablokov A. V., ed. Sand lizard. Moscow, Nauka Publ., 1976. 376 p. (in Russian).
19. Zavialov E. V., Tabachishin V. G., Shlyakhtin G. V. Morphological characters and peculiarities of sand lizards (Lacerta agilis exigua) biology in the north of the Lower Volga river area. Current Studies in Herpetology, 2000, vol. 1, pp. 6–14 (in Russian).
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For citations:
Shlyakhtin G.V., Tabachishin V.G., Yermokhin M.V. Seasonal Diet Variations of the Sand Lizard (Lacerta agilis) (Lacertidae, Reptilia) in the Northern Lower-Volga Region. Povolzhskiy Journal of Ecology. 2019;(3):396-401. https://doi.org/10.35885/1684-7318-2019-3-396-401
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