ALTERATIONS IN UNITS OF CENTRAL DOGMA UNDER ARSENIC EXPOSURE DURING PREPARATORY PHASE OF TESTICULAR CYCLE OF Mystus (M.) vittatus (Bl.)

Central dogma units comprise of DNA, RNA and synthesis of protein. Reproductive cycle in ?shes is always dynamic and the units of central dogma are always changing in different phases of testicular and ovarian cycle which constitute reproductive cycle in ?shes. The adult specimens of Mystus (M.) vittatus, a tropical siluroid, when exposed for 30 days to sublethal concentration of trivalent arsenic (11.24 mg/l) revealed signi?cant decline in DNA, RNA and consequently protein in the ovary of Mystus (M.) vittatus during its preparatory phase of Testicular cycle. However, 15 days exposure revealed less signi?cant alterations. Causes for declining in various units of central dogma and consequently protein synthesis is discussed in this paper

ARSENIC INDUCED ALTERATIONS IN GLYCOGEN AND LIPID DURING TESTICULAR CYCLE OF A FRESHWATER SILUROID, MYSTUS (M.) VITTATUS (BL.)

The increasing order in the glycogen and lipid content was observed during preparatory and spawning phase but decrease in these biochemical parameters was during post-spawning phase of testicular cycle in Mystus (M.) vittatus, a freshwater siluroid. Less signi?cant alteration in glycogen and lipid was noticed after 15 days of exposure but highly signi?cant decrease was observed after 30 days of exposure in SLC (Sublethal concentration) of trivalent arsenic as AsCl3. causes for decline in these biochemical parameters have been discussed.