Hepatic responses to chronic exposure to hydrogen sulfide in post-smolt Atlantic salmon

Abstract

The research was performed in the liver of post-smolt Atlantic salmon with three concentrations of hydrogen sulphide i.e., 0 μg (control), 1 μg (low( and 5 μg H2S/L (high) where the samples were taken when exposed for 2 week, exposed for 4 week and after the removal of hydrogen sulphide (6week). The expression of most gene markers was significantly upregulated in the low H2S concentration group at week 2 followed by downregulation at week 4. Further biochemical marker test shows very prominent recovery in high doses of H2S after the removal of H2S.