| Budget Amount *help |
¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
Fiscal Year 2014: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2011: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Outline of Final Research Achievements |
Estrildid finches have multiple sexual traits, including courtship display that is composed of song and dance and ornamental plumage colors. This study shed light on song and dance, and asked why multiple sexual signals evolved and how they function. Estrildid finches showed a capacity to coordinate multimodal signals, such as singing, dancing, and bill sounds. In addition, young finches of a Estrildid species show practicing behavior of dance very early in their life, which might contribute to master fine coordination between singing and dancing. As dances are often displayed in parallel with songs, they are likely to evolve non-independently of songs. However, by using phylogenetic comparative approaches I found that dance and song evolved independently. The mechanisms and functions of the two behaviors are at least partially independent.
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