The relationship between average monthly air temperature and sex ratios at birth (SRB) was analyzed for children born in Germany during the period 1946–1995. Both the absolute temperature and – more markedly – the monthly temperature deviations from the overall mean were significantly positively correlated with the SRB (P<0.01) when temperatures were time-lagged against the SRB data by –10 or –11 months. It is concluded that the sex of the offspring is partially determined by environmental temperatures prior to conception.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Received: 26 August 1998 / Accepted in revised form: 18 February 1999
About this article
Cite this article
Lerchl, A. Sex Ratios at Birth and Environmental Temperatures. Naturwissenschaften 86, 340–342 (1999). https://doi.org/10.1007/s001140050630
- Temperature Deviation
- Absolute Temperature
- Environmental Temperature
- Monthly Temperature
- Monthly Temperature Deviation