Ambient temperature predicts sex ratios and male longevity

被引：86

作者：

Catalano, Ralph ^{[1
]}

Bruckner, Tim ^{[1
]}

Smith, Kirk R. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2008年 / 105卷 / 06期

关键词：

climate change; global warming; natural selection; Scandinavia; time series;

D O I：

10.1073/pnas.0710711104

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The theory that natural selection has conserved mechanisms by which women subjected to environmental stressors abort frail male fetuses implies that climate change may affect sex ratio at birth and male longevity. Using time series methods, we find that cold ambient temperatures during gestation predict lower secondary sex ratios and longer life span of males in annual birth cohorts composed of Danes, Finns, Norwegians, and Swedes born between 1878 (earliest year with complete life tables) and 1914 (last birth cohort for which male life span can be estimated). We conclude that ambient temperature affects the characteristics of human populations by influencing who survives gestation, a heretofore unrecognized effect of climate on humanity.

引用

页码：2244 / 2247

页数：4

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