GRNTI 34.39 Физиология человека и животных
GRNTI 62.13 Биотехнологические процессы и аппараты
GRNTI 69.01 Общие вопросы рыбного хозяйства
GRNTI 69.25 Аквакультура. Рыбоводство
GRNTI 69.31 Промышленное рыболовство
GRNTI 69.51 Технология переработки сырья водного происхождения
GRNTI 87.19 Загрязнение и охрана вод суши, морей и океанов
Hypothermic short-term storage of sperm in liquid state without freezing is an alternative to cryopreservation in those cases, when liquid nitrogen is not available or its use is undesirable, e. g. in air transportation. The sterlet ( Acipenser ruthenus ) sperm has a very low osmolality of semen plasma, no more than 80 mOsm/kg, that is an obstacle in the development of preservatives for hypothermic storage. The experimental data on hypothermic storage of sterlet sperm in electrolyte-free solution of glucose, trehalose and albumin, isotonic to semen plasma showed that the ability of spermatozoa to motility activation decreased dramatically and was almost completely lost to the 24th day of storage. By this time, the amount of sperm with damaged membranes was 44.9 ± 5.3 % and DNA fragmentation was 34.5 ± 4.9 %, which obviously made the sperm infertile. Despite these, about 50 % of spermatozoa became motile, when activated for at least after 6 days of storage. Thus, the results of the study first demonstrate the possibility of effective hypothermic storage of sterlet sperm in the simple electrolyte-free solutions composed of sugars and albumin.
sturgeon fish, sterlet, hypothermia, sperm storage without freezing
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