BIOCHEMICAL CHANGES IN THE MUSCLE TISSUE OF RAINBOW TROUT (ONCORHYNCHUS MYKISS WALBAUM) DISINFECTED BY CHLORAMINE-T
Journal Title: Baltic Coastal Zone - Year 2016, Vol 20, Issue
Abstract
Chloramine-T is a widely used disinfectant for the treatment of gill diseases of fish in freshwater, and more recently attention has turned to its use in seawater. However, despite the wide use of chloramine-T, few studies have examined its toxicity to fish. Therefore, the aim of the current study was to examine the effects of disinfection by Chloramine-T on the muscle tissue of rainbow trout (Oncorhynchus mykiss Walbaum) using oxidative stress biomarkers (levels of 2-thiobarbituric acid reactive substances and derivatives of oxidatively modified proteins) and biochemical enzymes’ activity (alanine- and aspartate aminotransferases (ALT and AST), lactate dehydrogenase (LDH)) to observe the its toxic effects. The endpoints obtained from this study will be useful to monitor the effects of disinfectant bathing with Chloramine-T for this species of fish. In the disinfectant group, rainbow trout (n = 11) were exposed to Chloramine-T in final concentration of 9 mg per L. Control group of trout (n = 11) was handled with water from basin in the same way as Chloramine-T exposed group. Fish were bathed with Chloramine-T for 20 min and repeated three times every 3 days. Two days after the last bathing fish were sampled to study. Our results showed that Chloramine-T bathing caused the decrease of the lipid peroxidation as well as ALT and AST activity and significant decrease of LDH activity (by 339%, p = 0.017) compared to controls. Chloramine-T markedly affects on lactate and pyruvate metabolism and resulted to decrease of LDH activity. Correlative analysis revealed that the lipid peroxidation level is correlated with ALT and AST activity in the muscle tissue of unhandled control group. In the muscle tissue of trout disinfected by Chloramine-T, LDH activity is correlated positively with ALT and AST activity. Thus, the skeletal muscles of fish play an important role in the processing of lactate through the gluconeogenic and glycogenic pathways including a greater potential for biosynthesis. Our studies indicated that Chloramine-T in dose of 9 mg per L could at least partly attenuate oxidative stress and can be used for prophylactic disinfecting treatment of rainbow trout. Oxidative stress and biochemical alterations could be effectively used as potential biomarkers of Chloramine-T toxicity to the fish in the warning signal for pharmaceutical exposure to aquatic organisms. However, more detailed studies on using of these specific biomarkers to monitor the disinfectant treatment in aquaculture are needed.
Authors and Affiliations
Halyna Tkachenko, Joanna Grudniewska
RÓŻNICE SKŁADNIKÓW CHEMICZNYCH W OSADACH PLAŻOWYCH O ODMIENNEJ ANTROPOPRESJI
Celem pracy było oszacowanie wpływu czynników antropogenicznych na skład chemiczny piasków z plaż w Ustce i Czołpinie. Ustka jest typową miejscowością uzdrowiskową i turystyczną, natomiast Czołpino leży na terenie Słowiń...
INHIBITORY EFFECT OF ANTIBIOTICS ON THE GROWTH OF HETEROTROPHIC BACTERIA INHABITING MARINE BEACH
The objective of the present study was to evaluate heterotrophic bacteria capable of growth in the presence of different antibiotics and their mixture in such dynamic ecosystem as marine beach. Mixture antibiotics had th...
FIELD HEDGES OF SOUTHERN PART OF THE GARDNO LAKE – A RARE, ENDANGERED AND INTERESTING VASCULAR PLANTS REFUGE
This paper presents results of floristic investigations on the southern part of the Gardno Lake. In 2005-2006 vegetation seasons 81 rare, endangered and interesting vascular plants were found. Among them there are 27 spe...
REMEMBERING PROFESSOR ZBIGNIEW PIESIK
WYKORZYSTYWANIE NISKOCZĄSTECZKOWYCH ZWIĄZKÓW ORGANICZNYCH PRZEZ BAKTERIONEUSTON I BAKTERIOPLANKTON WYIZOLOWANY Z PRZYMORSKIEGO JEZIORA DOŁGIE WIELKIE
W pracy przedstawiono wyniki badań dotyczących wykorzystywania w procesach metabolicznych aminokwasów i cukrów przez bakterioneuston i bakterioplankton wyizolowane z przymorskiego jeziora Dołgie Wielkie. Preferowanymi pr...