Cryopreservation of sperm from turbot (Scophthalmus maximus) and application to large-scale fertilization
文献类型: 外文期刊
作者: Chen, SL 1 ; Ji, XS 2 ; Yu, GC 2 ; Tian, YS 2 ; Sha, ZX 2 ;
作者机构: 1.Chinese Acad Fisheries Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
2.Chinese Acad Fisheries Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China; Shanghai Fisheries Univ, Shanghai 200090, Peoples R China
关键词: Turbot;Scophthalmus maximus;Sperm;Cryopreservation;Motility;Salmo-gairdneri sperm;Atlantic salmon;Spermatozoa;Trout;Fertility;Storage;Fish;Milt;Carp
期刊名称:AQUACULTURE ( 影响因子:4.242; 五年影响因子:4.723 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: This paper reports on cryopreservation of sperm from turbot (Scophthalmus maximus). The effects of various extenders, cryoprotectants and sperm-egg insemination ratios on motility score and/or fertilization capacity of post-thaw turbot spermatozoa were examined to optimize cryopreservation procedures. Post-thaw motility of frozen sperm obtained with extender TS-2 was higher than those achieved with extenders D-15 and modified plaice Ringer solution (MPRS). The most effective cryoprotectant was determined to be 10% dimethyl sulfoxide (DMSO). Fertilization of small egg batches (2 ml eggs) with frozen sperm resulted in average fertilization rate (FR) (70.1 +/- 8.9%) and hatching rates (HR) (46.8 +/- 5.2%) similar to the fertilization rates (74.7 +/- 8.0%) and hatching rates (47.5 +/- 6.8%) of fresh sperm. The minimal density of frozen sperm required to obtain satisfactory fertilization rate was determined to be 2000:1 (sperm/egg). Fertilization of larger egg batches (40 ml eggs) with sperm frozen in 1.8-ml cryovials provided similar fertilization rates (71.6 +/- 7.3%) to that of the fresh sperm (76.2 +/- 5.7%), whereas the hatching rates (34.7 +/- 3.6%) of eggs fertilized with frozen sperm were slightly lower than those of fresh sperm (41.1 +/- 3.7%). Our results demonstrated that cryopreservation technique for turbot sperm in 1.8-ml cryovial could be used for hatchery purposes.
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