| Co-Investigator(Renkei-kenkyūsha) |
NARA Takashi 日本歯科大学, 新潟生命歯学部, 准教授 (30271894)
NAGAOKA Tomohito 聖マリアンナ医科大学, 医学部, 講師 (20360216)
SAWADA Junmei 聖マリアンナ医科大学, 医学部, 助教 (10374943)
SUZUKI Toshihiko 東北大学, 歯学研究科, 助教 (70261518)
ABE Mikiko 大阪市立大学, 医学部, 助教 (80212554)
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| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2010: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2009: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2008: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Research Abstract |
In this research, we investigated the impact of shortening breast-feeding period on the population growth which observed at the introduction of agriculture in prehistoric period of Japan. Three different approaches including collagen isotope analysis, enamel hypoplasia, and the population analysis of infants have been tested to estimate the length of breast-feeding. The estimation have not agree to each other using conventional methods, but some methodological arrangements can improve each estimation. Preliminary results suggested the Jomon hunter-gatherers had variable practices of breast feeding and weaning processes.
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