FFECT OF SOME FERTILIZERS ON THE EARLY DEVELOPMENTAL STAGES OF CYPRINUS CARPI° LINNV. K. GUPTA, J. P. SHARIVIA AND A. K. VERMAAbstract In this study, survival of the developing eggs and newly hatched larvae of the common carp, Cyprinus carpi° Linn. exposed to various concentrations of Diammonium phosphate (DAP @ 20-500 mg/L) and Murriate of potash (MOP 03 200-2600 mg/I) at pH range 7.6-7.9 and temperature regimen 28 ± 1°C has been investigated. The toxic effects of these agrochemicals (fertilizers) on the percentage of hatching and development of larval abnormalities has been recorded and LC. values worked out. The study suggests the both DAP as well as MOP exert significant (P<0.01) biological effects on the eggs and larvae of this fish species. A comparison of LC. values indicate that larvae are more sensitive than eggs to the toxic effects of these fertilizers and the possible reasons for the changes in the said parameters have been discussed.
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