| Budget Amount *help |
¥49,660,000 (Direct Cost: ¥38,200,000、Indirect Cost: ¥11,460,000)
Fiscal Year 2014: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2013: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2012: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
Fiscal Year 2011: ¥21,060,000 (Direct Cost: ¥16,200,000、Indirect Cost: ¥4,860,000)
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| Outline of Final Research Achievements |
Periodical change in hydrostatic pressure (tidal cycle) is one of potent environmental factors in aquatic environments. It remains unknown how tidal spawners utilize tidal cycle for synchronizing reproductive events. The present study aimed to clarify the physiological mechanism occurring in the brain of the threespot wrasse, which is a typical tidal spawner in coral reefs. Using a microarray of tiger puffer fish with hydrostatic pressure, we identified tidal-related genes. Some of them were identified in the brain of threespot wrasse. When hydrostatic pressure was given to the fish, mRNA abundance of C-type natriuretic peptide (Cnp) in the diencephalon increased. This result suggested that some genes in the brain act as a transducer of tidal stimuli.
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