Based on the morphology, the eggs of Penaeus indicus were classified into
five different types : type A eggs with normal development; type B eggs with
delayed or abnormal development; type C eggs with undifferentiated
embryonic mass; type D eggs with unequal cells and type E unfertilised eggs
with orange colour. The incidence of abnormal eggs was high in eyestalk
ablated pond reared prawn. Statistical analysis revealed a significant
difference in the percentage of abnormal eggs, hatching rate and bacterial
numbers between eyestalk ablated pond reared and wild females of prawn.
A significant correlation was found between the bacterial numbers and
percentage of abnormal eggs, and bacterial numbers and hatching rate of eggs
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