| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
The Japanese Robin is endemic to the islands around Japan, and is a summer visitor in most of its breeding range. The robin usually breeds in thick undergrowth of the cool-temperate montane forest, and such a preference limits its habitat to be a network of island-like patches. Some southern populations of the robin are now declining sharply due to the loss of forest undergrowth caused by the increase of sika deer. The population genetic structure of the robin was investigated across its range based on mitochondrial cytochrome b and control region sequence. The haplotype distribution pattern among the mainland populations was inferred to be mostly a result of contiguous range expansion, reflecting the history of both range and population expansion from the south after the last glacial period, whereas the present haplotype diversity was the lowest in Kyushu. Population decline in southern Japan may have a disproportionately strong influence on its genetic structure.
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