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Effects of Cryoprotectants and Diluents on the Cryopreservation of Spermatozoa from Far Eastern Catfish, Silurus asotus

  • Gil, Hyun Woo (Division of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University) ;
  • Lee, Tae Ho (Department of Marine Bio-materials and Aquaculture, College of Fisheries Science, Pukyong National University) ;
  • Park, In-Seok (Division of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University)
  • Received : 2017.03.05
  • Accepted : 2017.03.10
  • Published : 2017.03.31

Abstract

The aim of this study was to compare the efficacy of cryopreservation methods for ex situ conservation of spermatozoa from far eastern catfish, Silurus asotus. The spermatozoa activity index (SAI) and hatching rates were higher in spermatozoa stored in Alserver's solution than those of spermatozoa stored in glucose solution. The SAI and hatching rates in all experimental groups gradually decreased with increasing duration of storage. Additionally, the SAI and hatching rates gradually decreased with increasing thawing temperatures at all storage durations (P<0.05). Based on the SAI and hatching rates, our results suggest that the optimal cryopreservation conditions of catfish spermatozoa involve storage in Alserver's solution with 15% ethylene glycol, and thawing at $25^{\circ}C$. Cryopreservation of spermatozoa is a useful and reliable technique for conserving gene resources and for artificial propagation of far eastern catfish.

Keywords

References

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