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Peskova T. Y., Bachevskaya O. N., Plotnikov G. . Hematological Indices of the Lake Frog Pelophylax ridibundus (Pallas, 1771) (Ranidae, Anura) Inhabiting Reservoirs in the Northwestern Ciscaucasia with Various Pollution Types. Current Studies in Herpetology, 2019, vol. 19, iss. , pp. 40-45. DOI:

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Hematological Indices of the Lake Frog Pelophylax ridibundus (Pallas, 1771) (Ranidae, Anura) Inhabiting Reservoirs in the Northwestern Ciscaucasia with Various Pollution Types


The paper deals with hematological indices of lake frogs from two biotopes with different pollution types. The first biotope is the Chibi Canal, which receives water from rice bays, it is contaminated with pesticides. The second biotope is a reservoir near the old river-bed of the Kuban River near the forest park Krasny Kut. In both biotopes, no significant differences in the number of erythrocytes and hemoglobin in the blood of lake frogs were observed. Monocytosis, a leftward shift of the neutrophilic cell series, and eosinophilia were revealed in the leukocyte formula of the lake frog blood. These changes are adaptive. Thus, the water quality in the surveyed reservoirs is assumed to be good from April till September 2017, and the effluents falling into them had no pathological effect on lake frogs.


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