Alterations in histology and antioxidant defense system in the testes of the lake Van fish (Alburnus tarichi Güldenstädt, 1814)
| Autor: | Atilla Durmuş, Burak Kaptaner, Abdulahad Dogan, Ertuğrul Kankaya |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Antioxidant Turkey medicine.medical_treatment Cyprinidae 0211 other engineering and technologies Zoology 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law Biology medicine.disease_cause 01 natural sciences Antioxidants Rivers Testis medicine Animals Ecotoxicology 0105 earth and related environmental sciences General Environmental Science 021110 strategic defence & security studies Ecology Alburnus tarichi Histology General Medicine biology.organism_classification Pollution Lakes Oxidative Stress Gonadosomatic Index Seminiferous tubule medicine.anatomical_structure Biomarkers Water Pollutants Chemical Pyknosis Oxidative stress Environmental Monitoring |
| Zdroj: | Environmental Monitoring and Assessment. 188 |
| ISSN: | 1573-2959 0167-6369 |
| DOI: | 10.1007/s10661-016-5476-z |
| Popis: | Recent reports have demonstrated gonadal abnormalities in the Lake Van fish (Alburnus tarichi) from Lake Van caused by increasing pollution. In the present study, the fish was collected from an area of Lake Van receiving mainly sewage treatment plant effluent at prespawning period (April) and from a river (Karasu) which is close to the polluted area of the lake and where the fish migrates at spawning period (May). Collected specimens were examined for testicular alterations, gonadosomatic index (GSI), condition factor (CF), and antioxidant defense system biomarkers based on comparison with a reference lake (Ercek) and a reference freshwater inlet (Memedik River). Histological examinations of the testes of fish from the polluted area and the connected river showed various alterations consisting of macrophage aggregates, vacuolation, pyknosis, germ cell degeneration, seminiferous tubule dilation, disorganization of tubules, reduced spermatozoa, and fibrosis. A lower GSI and CF were also observed. Moreover, alterations in the antioxidant system biomarkers were determined in the testis tissues of fish from the Lake Van and Karasu River, indicating oxidative stress. These results suggest that the abnormalities in the testes are causally related to the increased oxidative stress, and pollution in Lake Van may have adversely affected the reproductive health of the lake Van fish. |
| Databáze: | OpenAIRE |
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