| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
|
|---|
| 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.
|
