Impact of tributyltin on antioxidant and DNA damage response in spermatozoa of freshwater prawn Macrobrachium rosenbergii
Rani, K. Umaa . 2015
Effects of tributyltin (TBT) on antioxidant [total
superoxide dismutase (SOD), glutathione peroxidase (GPx),
and glutathione reductase (GR)] and DNA damage levels in
the spermatozoa were studied and reported here for the first
time in the freshwater prawn Macrobrachium rosenbergii.
Three groups of (n=10 in each group) fishes were exposed
to three different nominal concentrations of TBT viz., 1, 2, and
4 mg L−1 along with control group for 90 days. Significant
decrease of antioxidant and increased DNA damage levels
were seen at higher doses of 2 and 4 mg L−1. In prawn, the
antioxidant level plays a vital role in sperm protection, activation,
differential functions related to the physiology, and reproductive
behavior. This study serves as a biomonitoring tool
to assess the TBT effects on reproductive behavior of aquatic
biota.
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