Reviewed
Reviewer grazyna | Review

#296 Sex ratio at birth following the environmental stress. The pilot study of the Detva population (The Upper Hungary Kingdom), 1801-1920


Coresponding author's contact details

First name Jan Middle name Last name Golian
Title Dr. Organization / Institution Catholic University in RuzomberokHrabovská cesta 1 Department n/a
Address Hrabovská cesta 1B Postal / Zip code 034 01 Country SK
E-Mail Hidden Phone number Hidden Presenting author Yes

Co-authors (1)

Co-Auhtor #1

First name Grażyna Middle name Last name Liczbińska
Title Professor Organization / Institution Adam Mickiewicz University Department Faculty of Biology
Country PL E-Mail Hidden Presenting author No

Abstract

Abstract title

Sex ratio at birth following the environmental stress. The pilot study of the Detva population (The Upper Hungary Kingdom), 1801-1920

Abstract text

According to biological law, the ratio of male-to-female live births (secondary sex ratio, SSR) should be in the range of 105–108% of female live births. Many studies have suggested that SSR fluctuations may have been the result of exposure of pregnant women to severe stress, which affects either the selection of zygote sex at conception, or on spontaneous selective abortion of male foetuses. Both modifications ultimately lead to a reduction in the number of live male births to the number of live female births. The male-to-female live births index is considered an indicator of broadly understood environmental conditions, caused by ecological, economic, political factors, etc. In this presentation we will check whether and to what extent the SSR values may have reflected the unstable situation caused by the Napoleonic wars, economic crises, hunger and crop failure, WWI and post-war turmoil. We used the aggregate data on the numbers of births (N=53,355) for the years 1801–1920. They were derived from births registers of the Detva parish, the Upper Hungary Kingdom. The lowest average SSR values were recorded in critical event, being at the level of 0.96 (ranged between 0.93–1.0), while the highest – in the periods of the stable situation, 1.11.

Conference topic

Panel no. 14 - Environmental Stress Impact on Human Biology, Health Status and Demography

Preferred format

Oral

Abstract Review

This abstract was reviewed on 2020-09-23 10:34h by grazyna

Reviewer decision

Accepted