Human sex ratio as it relates to caloric availability

Williams, Robert J.; Gloster, Susan P.

Human sex ratio as it relates to caloric availability

dc.contributor.author	Williams, Robert J.
dc.contributor.author	Gloster, Susan P.
dc.date.accessioned	2007-07-23T19:15:17Z
dc.date.available	2007-07-23T19:15:17Z
dc.date.issued	1992
dc.description	Permission to include in repository granted by Denise Kall, Managing Editor.	en
dc.description.abstract	The relationship between human sex ratios at birth and caloric availability per capita was examined across different countries. Significant positive correlations were obtained between the amount of food a country had available and the percentage of male births. Furthermore, increases or decreases in a country's caloric availability were related to corresponding changes in that country's sex ratio. These results provide evidence of adaptive sex ratio biasing in humans. The physiological mechanism by which this effect operates is probably higher mortality rates for male embryos and fetuses as a result of nutritional deficiencies and associated stressors.	en
dc.description.peer-review	Yes	en
dc.identifier.citation	Williams, R.J. & Gloster, S.P. (1992). Human sex ratio as it relates to caloric availability. Social Biology, 39, 285-291.	en
dc.identifier.issn	0037-766X
dc.identifier.uri	https://hdl.handle.net/10133/394
dc.language.iso	en	en
dc.publisher	Society for the Study of Social Biology	en
dc.publisher.faculty	Departments of Health and Family Services, Government of Manitoba	en
dc.publisher.institution	Departments of Health and Family Services, Government of Manitoba	en
dc.subject	Sex ratio	en
dc.subject	Food -- Caloric content	en
dc.title	Human sex ratio as it relates to caloric availability	en
dc.type	Article	en