2010 Fiscal Year Final Research Report
Studies on the functions of parasperm and the usage of parasperm on cryopreservation of eusperm in freshwater sculpins
| Project/Area Number |
20780140
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
General fisheries
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| Research Institution | Fukui Prefectural University |
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Principal Investigator |
TAHARA Daisuke Fukui Prefectural University, 海洋生物資源学部, 講師 (20295538)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 淡水カジカ類 / 異型精子 / 精子凍結保存 / 人工授精 / 精子多型 |
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| Research Abstract |
The formation of parasperm was found in testis of freshwater sculpins maintained under various conditions (water temperature and photoperiod). Therefore, the strains of freshwater sculpins without parasperm could not be made and this result suggested that parasperms were certainly produced along with eusperm during spermatogenesis. As reported in freshwater sculpins, the biosynthesis of sex steroid hormones in parasperms was found in marine sculpin. Characteristics of sperm mobility of freshwater sculpins and cryopreservation of fourspine sculpins eusperm were clarified.
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