Using histological techniques, changes in histomorphological characteristics of the liver were revealed in two fish species from lakes with different levels of anthropogenic impact. The most significant changes in the liver of roach from Kostomukshskoe Lake (used as a tailing dump of the Kostomuksha Mining and Ore-processing Plant) included initial stages of parenchymal protein dystrophy and, to a lesser extent, fatty dystrophy; in pike, fatty liver dystrophy prevailed. Compared to roach, pike proved to be more sensitive to ecological conditions in Kostomukshskoe lake, including increased water mineralization. In both fish species from Koivas Lake (20 km from the pollution source), only the initial stages of local dystrophic changes could be detected. The fish from clean Kamennoe Lake (located in a protected area) had no pathological changes in the liver.
Russian Journal of Ecology – Springer Journals
Published: Apr 5, 2014
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