| Budget Amount *help |
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2016: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2014: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
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| Outline of Final Research Achievements |
To clarify the origins and genetic basis of the adaptations of endemic species in the unique freshwater fish fauna of Lake Biwa, an ancient temperate lake, morphological comparisons and analyses of mitogenomes, gene expression, and genome-wide polymorphisms were conducted for several species groups. The study used four approaches to deepen our understanding of the adaptive evolution of the endemic fishes. (1) Phenotypes (morphology and gene expression) related to lake adaptation were clarified. (2) Robust phylogenetic relationships and demographic histories were estimated based on genetic variation in mitochondrial and nuclear genomes. (3) Screening for candidate genes for adaptation, the commonalities and diversity among species groups were clarified. (4) Genomic regions associated with adaptation were detected by quantitative trait locus analysis.
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