Do differences in Toxoplasma gondii prevalence influence global variation in secondary sex ratio? Preliminary ecological regression study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023752%3A_____%2F16%3A43915184" target="_blank" >RIV/00023752:_____/16:43915184 - isvavai.cz</a>
Result on the web
<a href="https://www.cambridge.org/core/journals/parasitology/article/do-differences-in-toxoplasma-prevalence-influence-global-variation-in-secondary-sex-ratio-preliminary-ecological-regression-study/A6A3597B29D90F038C181ACA79349FF7#" target="_blank" >https://www.cambridge.org/core/journals/parasitology/article/do-differences-in-toxoplasma-prevalence-influence-global-variation-in-secondary-sex-ratio-preliminary-ecological-regression-study/A6A3597B29D90F038C181ACA79349FF7#</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S0031182016000597" target="_blank" >10.1017/S0031182016000597</a>

Result language
angličtina
Original language name
Do differences in Toxoplasma gondii prevalence influence global variation in secondary sex ratio? Preliminary ecological regression study
Original language description
Sex of the fetus is genetically determined such that an equal number of sons and daughters are born in large populations. However, the ratio of female to male births across human populations varies significantly. Many factors have been implicated in this. The theory that natural selection should favour female offspring under suboptimal environmental conditions implies that pathogens may affect secondary sex ratio (ratio of male to female births). Using regression models containing 13 potential confounding factors, we have found that variation of the secondary sex ratio can be predicted by seroprevalence of Toxoplasma across 94 populations distributed across African, American, Asian and European continents. Toxoplasma seroprevalence was the third strongest predictor of secondary sex ratio, β = MINUS SIGN 0.097, P < 0.01, after son preference, β = 0.261, P < 0.05, and fertility, β = MINUS SIGN 0.145, P < 0.001. Our preliminary results suggest that Toxoplasma gondii infection could be one of the most important environmental factors influencing the global variation of offspring sex ratio in humans. The effect of latent toxoplasmosis on public health could be much more serious than it is usually supposed to be.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
FL - Psychiatry, sexology
OECD FORD branch
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Project
<a href="/en/project/ED2.1.00%2F03.0078" target="_blank" >ED2.1.00/03.0078: National institute of Mental Health</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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