| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
|---|
| Outline of Final Research Achievements |
Morphofunctional dynamics of metamorphosis and occurrence of deformities in reared eel leptocephali were studied to contribute to establishing artificial production techniques of glass eels for eel aquaculture. It was revealed that 1) eight types of vertebral deformity (compression, luxation, fusion, brachyspina, modification, lordosis, kyphosis and scoliosis) that were seldom found in wild glass eels occured. 2) Ionocytes distributing all over the body surface of leptocephali showed immunoreaction of ion transporters such as NKA, NKCC1 and CFTR, and these transporters appeared to play an important role for keeping the ion balance of the leptocephalus body. 3) Leptocephali reared at the higher water velocities in the circulating rearing tank showed smaller body sizes and higher occurrence of notochord curvature suggesting importance of current condition in the tank.
|
