Changes in the Basic Morphophysiological Parameters in the Populations of Pelophylax Ridibundus (Amphibia: Ranidae) from Anthropogenically Polluted Biotopes in Southern Bulgaria. Part 1

1 University of Plovdiv “Paisii Hilendarski”, Faculty of Biology, Department of Human Anatomy and Physiology, BG – 4000 Plovdiv, Bulgaria
2 Bulgarian Society for the Protection of Birds (BSPB), BG – 4000 Plovdiv, Bulgaria
3 Medical University, Department of Biology, BG – 4000 Plovdiv, Bulgaria


ZHELEV, Zh. M., G. S. POPGEORGIEV and N. H. MEHTEROV, 2014. Changes in the basic morphophysiological parameters in the populations of Pelophylax ridibundus (Amphibia: Ranidae) from anthropogenically polluted biotopes in southern Bulgaria. Part 1. Bulg. J. Agric. Sci., 20: 1202-1210


This study was conducted with the purpose to assess the condition of some vital organs (heart, spleen, kidney and gonads) of Pelophylax ridibundus populations that live in conditions of anthropogenic pollution in biotopes in southern Bulgaria, through analysing their relative weights: cardiosomatic index (CSI), spleenosomatic index (SSI), renosomatic index (RSI) and gonadоsomatic index (GSI). Populations from three biotopes were investigated: a relatively clean biotope (the control) and two polluted biotopes (with domestic sewage pollution and heavy metal pollution). We found that in both sexes, in conditions of pollution, the relative weight of the heart, spleen and kidney increased. In the population from biotope with heavy metal pollution, the relative weight of gonads was bigger.

Key words: Anthropogenic pollution, Pelophylax ridibundus, cardiosomatic index, spleenоsomatic index, renosomatic index, gonadоsomatic index

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