By S. m. Drobenkov

This e-book summarizes the result of a long term research of amphibian distribution, ecology and morphology within the Republic of Belarus. For all amphibian species comparable 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. special research of morphological edition and the differentiation of populations by way of panorama areas are given. local difficulties of anthropogenic strain and technique of species conservation are mentioned. The ebook can also serve a consultant to the amphibians of Belarus and should good be utilized by either experts and amateurs.

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Recently Tree Frogs were observed in urbanized territories even more often than in adjacent natural ecosystems. In the central part of the Republic, on the limit of its distribution, populations of this species are fragmented, and their number fluctuate considerably by years. However, in Polesie this is a common species of the local fauna. The main forms of anthropogenic effect that lead to population declines are destruction of breeding basins, chemical pollution of basins by industrial wastes, insecticides and mineral fertilizers, and capturing for keeping in terraria.

25). Subspecific systematics of the Marsh Frog is poorly known, and it is difficult to identify the taxonomic positions of this species in Belarus. The Marsh Frog is considered to be a complex of 9–10 species (Kuzmin, 1999). Marsh and Pool frogs are the parent forms, from which as a result of hybridization, the Edible Frog appears. The Marsh Frog is one of the largest amphibians of Belarus. 4 mm (Table 12). The body has an elongated shape with an ovate snout. Webs on the forelegs are absent but well developed on the hind legs.

5 m. Local aggregations of the Tree Frog consist of 15–20 adult males and several 38 SERGEI M. DROBENKOV ET AL. females. Their composition varies permanently. , shallow fishery ponds, moors, and fen alder forests) several hundred individuals sometimes concentrate and make great choruses. The mean density in breeding groups is 3–5 individuals of both sexes/10–15 m2 of surface area. ” It can be imitated by some people and this provokes answers from males. During summer mating choruses start at twilight (2100–2130), but in spring they quite often can be heard in the afternoon, especially in warm cloudy weather.

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