NEW BIOTECHNOLOGICAL METHODS FOR CRYOPRESERVATION OF REPRODUCTIVE CELLS OF STURGEON
The aim of the research is to increase the survivability of reproductive cells of sturgeon at cryopreservation and developing reliable technology suitable for use on an industrial scale.Methods. We have used standard methods of freezing, thawing reproductive cells, fertilization and incubation of eg...
Published in: | South of Russia: ecology, development |
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Main Authors: | , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | Russian |
Published: |
State Institute of Applied Ecology of the Republic of Dagestan
2016
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Subjects: | |
Online Access: | https://ecodag.elpub.ru/ugro/article/view/804 https://doi.org/10.18470/1992-1098-2016-1-59-68 |
Summary: | The aim of the research is to increase the survivability of reproductive cells of sturgeon at cryopreservation and developing reliable technology suitable for use on an industrial scale.Methods. We have used standard methods of freezing, thawing reproductive cells, fertilization and incubation of eggs and larval rearing of sturgeon. Fundamentally new is cryoprotective composition: for sperm we have adjusted the composition of cryoprotective medium (for beluga 3% of dimethyl sulfoxide, for Russian sturgeon 4% of dimethyl sulfoxide); for freezing the eggs we have used cryoprotective mixture of unrefined vegetable and animal oils.Results. Survivability of defrosted sperm sturgeon has been increased: for Beluga it is up to 20%, for Russian sturgeon - 47%. At insemination of cryopreserved eggs of Russian sturgeon with native sperm the fertilization rate has made 41%.Main conclusions. The research proves the effectiveness of reducing the toxic effect of cryoprotective substances, thus leading to increased survivability of reproductive cells of sturgeon. During the insemination of eggs, stored in liquid nitrogen, the resulting offspring were viable and by the reactivity of the central nervous system and receptor complex it does not differ from the young obtained by conventional technology. Цель. Повышение выживаемости репродуктивных клеток осетровых видов рыб при криоконсервации и получение надежной технологии, пригодной для использования в промышленных масштабах.Методы. В работе применяли стандартные методы замораживания, оттаивания репродуктивных клеток, оплодотворения и инкубации икры и подращивания личинок осетровых видов рыб. Принципиально новым был криопротективный состав: для сперматозоидов скорректирован состав криозащитной среды (для белуги 3% диметилсульфоксида, для русского осетра 4% диметилсульфоксида); для замораживания яйцеклеток применялась криопротекторная смесь из растительного нерафинированного и животного масел.Результаты. Увеличилась выживаемость дефростированных сперматозоидов осетровых видов ... |
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