Histopathological Alterations in Vimba sp. Gills as Biomarkers of Freshwater Quality in the Veleka River, Bulgaria
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Date
2025-12-18
Journal Title
Journal ISSN
Volume Title
Publisher
Plovdiv University Press "Paisii Hilendarski"
Abstract
In the present research, we evaluated the alterations in the histological structure of Vimba sp. gills as a biomarker of freshwater quality. Fish were collected from the Veleka River. Based on the obtained results, we established the highest degree of proliferative changes. These alterations concerned mainly the covering epithelium of the secondary lamellae and proliferation of the cells in the cartilage tissue (chondrocytes). Overall, the study emphasizes the importance of biomonitoring in natural ecosystems in order to assess the health of native fish and hence the quality of surface waters.
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Keywords
histopathology, fish, gills