| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
During the course of the investigation of neural mechanism of negative phototaxis behavior, we accidentally found that the slugs can evade light places even if their eyes were bilaterally removed. This unexpected finding prompted us to investigate how the slugs detect light in the absence of eyes. Our study revealed that the isolated brain of the slugs responds to light at the electrophysiological level, and that the pleural kinds of opsin mRNAs are expressed in the brain. Our present study suggests that the slugs can detect and evade light by using their brain as a photosensor if they are blinded by damage to the tentacles.
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