By S. m. Drobenkov
This publication summarizes the result of a long term research of amphibian distribution, ecology and morphology within the Republic of Belarus. For all amphibian species similar to Triturus vulgaris, T. cristatus, Bombina bombina, Pelobates fuscus, Bufo bufo, B. viridis, B. calamita, Hyla arborea, Rana temporaria, R. arvalis, R. ridibunda, R. lessonae and Rana esculenta, geographical and habitat distribution, assemblage constitution, feeding, task, copy and improvement are defined. unique research of morphological version and the differentiation of populations by means of panorama areas are given. local difficulties of anthropogenic strain and technique of species conservation are mentioned. The booklet can also serve a consultant to the amphibians of Belarus and will good be utilized by either experts and amateurs.
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Extra resources for Amphibians of Belarus
42% in adults in some populations. The dorsal color of the Moor Frog varies from pale-brownish to dark brown. The belly is milk-white with considerable pigmentation. The pattern and coloration of the sides vary THE AMPHIBIANS OF BELARUS 43 Fig. 23. Distribution of Rana arvalis in Belarus. geographically and among populations. The dark spots vary in size and shape, and the number and shape allows one to distinguish discrete phenotypes. The breeding season in central Belarus usually falls in the middle of April after the air temperature rises to 10–12oC, in various types of wetlands (Fig.
One clutch contains up to 2300 eggs. 5 mm. Larvae form aggregations (Fig. 18). Tadpoles in later stages of development have a typical middorsal stripe (Fig. 19). Lengths of metamorphs are 12–18 mm, and densities in riparian zones can reach 32–55 specimens/m2. 3 km. Fig. 18. Aggregation of Bufo calamita tadpoles. Fig. 19. Metamorphosing tadpole of Bufo calamita (Zasulie, Vileika). THE AMPHIBIANS OF BELARUS 35 Table 10. Body proportions of Bufo calamita from the territory of Belarus (n=153). 3 m) and warm during the day, and as a rule, vegetation is lacking.
5 months and the first metamorphs move onto land usually in the middle to end of June. In the region of our studies, the Common Frog inhabits a variety of natural and modified wood, meadow, moor and floodplain habitats. However, in comparison with the Moor Frog, this species has higher humidity requirements that, apparently, effect its habitat distribution and diurnal activity. The Common Frog in Belarus occurs mainly in humid woods. The species is distributed unevenly. In gallery alder forests and oak woods the average level of density reaches 550 specimens/ha but on lowland meadows only 120 specimens/ha.
Amphibians of Belarus by S. m. Drobenkov