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Abstract: Considering that significant progress has been made in the field of cryopreservation and long-term storage of sperm in different species, but this process causes significant damage to the sperm cell. The researchers concluded that with a proper understanding of how sperm is stored in the oviduct, sperm can be stored for longer without freezing. This is in favour of species whose sperm have shorter viability after freezing and can only be stored in liquid conditions for a few days. Compounds called glycans in the epithelium of the oviduct and sperm binding proteins to these glycans are more commonly referred to. In this review, information about sperm storage tanks, the role of these tanks in sperm function, glycans were studied in mammals from google scholar, pub med, andrology, reproduction of domestic animals and biology of reproduction.
By studies these contents, we conclude that in some species, sperm are stored for a long time in the female reproductive system and are able to produce offspring without the presence of males, by carefully studying the mechanisms involved and being inspired by these events, we can succeed in preserving superior genetic resources and preserving the sperm of endangered species without freezing.

Keywords: Glycans, Sperm reservoirs, Oviduct, Cell binding

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