Abstract
Induction of gynogenetic development of ide using semen of dace was performed. The results obtained during genetic inactivation of dace sperms showed that the most optimal time of UV irradiation dose was from 5 to 10 minutes with the optimum in minute 9 (3456 J m -2 ). The ide oocytes were next fertilized with genetically inactivated semen of dace and subjected several minutes later to environmental shock aiming at retaining the second polar body inside the oocyte. The obtained results were analyzed using a color marker. The highest percentage of gynogenetic ide breed (exceeding 20%) was obtained when fertilized oocytes were subjected to environmental shock lasting for 3 minutes during the 14th minute after fertilization.
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