| Summary: | In this study, it was aim to investigate oxidative stress in scaly carp (Cyprinus carpio) exposed to
delthamethrin in different temperatures. For this purpose, fish were stocked to
six different glass aquarium which was adjusted to 23 °C water temperature with
adjustable thermostat heaters. After fifteen days adaptation period,
temperatures of two aquarium were decreased to 18 °C, while temperatures of the
other two were increased to 28 °C. These groups were exposed to 0.036 μg/L
concentration of deltamethrin for 14 days. At the end of the experimental
period, the liver and gills were taken. Malondialdehyde (MDA) level as an
indicator of lipid peroxidation, reduced glutathione (GSH) level and
glutathione S-transferase (GST) activity were determined in these samples. The
MDA levels were increased in the liver and gill of the groups at 18 °C and 28
°C when compared to the control group. The liver and gill MDA levels of the
groups treated deltamethrin simultaneously with the change in temperature were
higher than the groups at 18 °C and 28 °C. This increase was also observed in
the group treated deltamethrin at 23 ºC. The GSH levels and GST activities were
decreased in the liver and gill of the groups at 18 °C and 28 °C when compared
to the control group. The GSH level and GST activity of the groups treated
deltamethrin simultaneously with the change in temperature were lower than the
groups at 18 °C and 28 °C. This increase was also observed in the group treated
deltamethrin at 23 ºC.
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