著作: [中堀 豊]/[佐藤 陽一]/[エヴィス アシュラフ]/Iwamoto Teruaki/[新家 利一]/Nozawa Shiari/Yoshiike Miki/Yang Xin-Jun/[勢井 雅子]/Namiki Mikio/Kou Eitetsu/Ito Naoki/Komatsu Kiyoshi/Matsumiya Kiyomi/Nakagome Yasuo/Climatic influence on the reproductive characteristics of Japanese males/[Journal of Human Genetics]
(英) Climatic influence on the reproductive characteristics of Japanese males
(英) We previously performed a survey of the sperm characteristics of the partners of pregnant women in four cities in Japan. In the present study, we analyzed the sperm characteristics of these subjects and the correlations between these sperm characteristics and climatic changes or Y chromosome haplogroups. Our results showed that more haplogroup D2a1 males than O2b1 males were born in the first half of the year (January to June), whereas more O2b1 males were born in the last half of the year (July to December) (P<0.05). This was agreed and correlated with the seasonal variations in their mean sperm concentrations. The haplogroup C, D* and D2a1 males displayed lower sperm concentrations from March to May, followed by an increase in their sperm concentrations starting in June or July, while the O2b1 males displayed higher sperm concentrations in the first half of the year followed by a sudden decrease from July to August (P<0.05). We hypothesize that the Japanese climate has different effects on the sperm characteristics and reproductive seasonality of males from different lineages; and therefore, has influenced the modern population of Japan.
Journal of Human Genetics(日本人類遺伝学会)
|年月日||必須||2012年 4月 26日|