| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
Analyzing speed of sucking droplets in Antheraea yamamai larvae showed that some sugars induced the feeding behavior, and an alkaloid suppressed on the other hand. The taste receptor cells to these stimulants located either on the maxillary galea or the epipharynx, and the behavior did not correlate with the location. Feeding behavior of Bombyx mori larvae by injecting biogenic amines or their related substances showed that octopamine accelerated feeding, and serotonin suppressed. Some antagonists to dopamine receptor suppressed feeding, and an agonist to D2-like dopamine receptor remarkably accelerated feeding and defecation. Additional experiments using polyphagous silkworm strains and simple sucrose diets suggested that the agonist regulated feeding behavior via the taste information processing either in the peripheral or the central nervous system.
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