كليدواژه :
ACIPENSER PERSICUS , Density of sperm , Monospermic , Polyspermic and Micropile , شيلات , تاسماهي ايراني , تراكم اسپرم , لقاح , منواسپرمي , پلي اسپرمي
چكيده لاتين :
In order to determine relationship between sperm density and fertilization rate in Persian sturgeon, different density of sperm have used.Results of first method showed that: with different densities of sperm 0.2, 0.5, 1 and 2 ml, rate of monospermic fertilization were 57.7, 58.4, 59 and 61.4% respectively, that there were no significance difference(P> 0.05), rate of polyspermic fertilization were 4.7, 10.3, 15.6 and 17.6% respectively. Results of second method showed that: with different densities of sperm 0.2, 0.5, 1 and 2 ml, rate of monospermic fertilization were 55.7, 52.9, 41.7 and 32.7% respectively, that there were significance difference between two first densities and others (P>0.05), rate of polyspermic fertilization were 2.8, 11, 29.5 and 30.9% respectively, that there were significance difference between two first densities and others (P>0.05). As mentioned above with increasing of sperm densities, rate of monospermic fertilization decreased and rate of polyspermic fertilization increased that it is related to presence of many micropiles on the oocytes of sturgeons.
