Akademik Veri Yönetim Sistemi
4. AHI EVRAN International Conference on Scientific Research, Kırşehir, Türkiye, 26 - 28 Nisan 2024, cilt.3, ss.991-992
The outputs of human activities in many different fields have often been considered as pollutants for
natural environments. The types and levels of these pollutants vary according to geographical regions,
but are generally higher where human populations are concentrated. The water quality of marine and
freshwater environments around the world is deteriorating rapidly. Freshwater resources, known as
inland waters, have become increasingly used for human consumption, agriculture and animal
husbandry activities. However, due to the decrease in precipitation regime, it has become more difficult
to find water in sufficient quantity and quality to meet this use. All living creatures, especially fish,
which use freshwater resources as habitat, are negatively affected by this situation. In addition to the
decrease in the amount of water resources, the pollutant input further exacerbates the problem. Fish living in water are constantly exposed to this effect. It is very important to determine the level of this
effect. Since fish are good indicators, they are monitored with different methods in many natural
environment monitoring programs to monitor water quality. This study was carried out to determine the
biochemical changes in the kidney tissue of Cyprinus carpio and Capoeta kosswigi fishes living in
Karasu river, which are exposed to pollutants from different sources. Spectrophotometric method was
used in the analysis. Superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST)
activity and glutathione (GSH) content were determined in the samples. In C. carpio, GST and SOD
increased while CAT and GSH decreased. CAT and GSH increased while GST and SOD decreased in
C. kosswigi. Although the two fish species studied were in the same family, their biochemical responses
differed. This may be due to species differences and dietary habits. It would be appropriate to establish
a monitoring program for the continuation of vertebrate biodiversity in the river.