RESPONSES OF ANTIOXIDANT STATUS IN THE GILLS OF BROWN TROUT ( SALMO TRUTTA M. TRUTTA L.) WITH ULCERATIVE DERMAL NECROSIS

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Halyna Tkachenko Natalia Kurhalyuk Katarzyna Pałczyńska

Abstract

Antioxidant defence system (activities of superoxide dismutase, catalase, glutathione reductase, glutathione peroxidase), and free radical modification of lipids were determined in the gills from male and female brown trout (Salmo trutta m. trutta L.) affected by ulcerative dermal necrosis (UDN). In both males and females, lipid oxidation in the gills from UDNaffected trout showed higher values as compared to the respective control. UDN induced an increase of thiobarbituric acid reactive substances (TBARS) levels both in the gills of males and females. UDN caused a decrease in gill antioxidant enzyme activities. This might be due to inactivation of the above mentioned enzymes by the end products of lipid peroxidation. The importance of the glutathione mediated antioxidant defence system in protection a gainst UDNinduced oxidative stress was
demonstrated.
Key words: ulcerative dermal necrosis, brown trout, Salmo trutta trutta, gills, oxidative stress, lipid peroxidation, antioxidant enzymes

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How to Cite
TKACHENKO, Halyna; KURHALYUK, Natalia; PAŁCZYŃSKA, Katarzyna. RESPONSES OF ANTIOXIDANT STATUS IN THE GILLS OF BROWN TROUT ( SALMO TRUTTA M. TRUTTA L.) WITH ULCERATIVE DERMAL NECROSIS. Baltic Coastal Zone, [S.l.], v. 15, p. 2011, vol.15, pp. 145 - 158, mar. 2011. ISSN 1643-0115. Available at: <https://bcz.apsl.edu.pl/index.php/1/article/view/118>. Date accessed: 04 july 2022.
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