| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
|---|
| Research Abstract |
In the hydrozoan jellyfish Cladonema pacificum, there are two different groups in which spawning is triggered by different photic stimuli : light stimulation after dark (light type) and dark stimulation after light (dark type). This study revealed that the regional distribution, the photic conditions required for spawning, and the size of spawned eggs differ between the two types. The characteristics of the next generation produced in crossbreeding experiments suggest that the two types are caused by genetic factors. The present study also provides evidence that a neuropeptide(s) acts downstream of photoreception and appears essential for spawning in either type of C.pacificum.
|
