Author(s): S Beula Agnes and Dr. K Thirumathal

Abstract: The main aim of this study was to identify the relationship between the environmental factors and the spermatological qualities of Cyprinus carpio. Different environmental factors like temperature, pH, alkalinity, total hardness, ammonia and nitrate are negatively correlated with all spermatological qualities like volume of milt, semen pH, duration of sperm motility, percentage of motility, motility score, sperm density, live and dead cell percentage of Common carp and show a significant positive relationship with percentage of motility (r = 0.996, p<0.01), motility score (r = 0.918, p<0.05), sperm density (0.979, p<0.05). The pH of the water showed negative correlation with all reproductive parameters in C. carpio and significance at p<0.05 (r = -923), motility percentage (r = -967) motility score, (r = -916) sperm density. Alkalinity shows the negative correlation with all sperm quality parameters and exhibits significant correlation with motility duration (r = -0.995) significant level of (p<0.01) level. Total hardness was negatively correlated with all spermatological parameter and show significant difference between pH of milt (r= -.940), motility percentage (r= -.944), sperm density (r = -.904), spermatocrit (r = -.941), live cell percentage (r = -.984), p<0.01 level. Ammonia showed significant negative relationship at p<0.05 level with pH of milt (r = -.924), motility percentage (r = -.910), sperm density (r = -.969). Nitrate showed negative relationship at p<0.05 level with pH of milt (r = -.915), spermatocrit (r = -.923) and live cell percentage (r = -.960).

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