| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
Relationships between sex-biased mortality and adult body size were evolutionary-ecologically examined in anadromous masu salmon(Oncorhynchus masou) to better understand evolutionary causes and processes of sex-differences in animal life histories. In two tested populations, as predicted, female-biased mortality and sexual size dimorphism co-occurred. Such a co-occurrence of sex-biased traits found here might result from sex-specific feeding strategy that is due to sex-differences in breeding selection on adult body size.
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