Do humans adjust offspring sex according to the local operational sex ratio?
Question: Do humans overproduce the rarer sex in response to skews in the local operational sex ratio (OSR)? And how should one define the OSR in humans? Hypothesis: We predicted that instead of the current adult sex ratio used in previous studies as a cue for the local OSR, parents should use the o...
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Evolutionary Ecology
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fteawag:oai:dora:eawag_6041 2023-05-15T17:42:29+02:00 Do humans adjust offspring sex according to the local operational sex ratio? Helle, Samuli Käär, Pekka Helama, Samuli Jokela, Jukka 2008 http://www.evolutionary-ecology.com/abstracts/v10/2306.html eng eng Evolutionary Ecology Evolutionary Ecology Research--Evol. Ecol. Res.--journals:956--1522-0613 eawag:6041 journal id: journals:956 issn: 1522-0613 ut: 000258747100009 local: 13632 scopus: 2-s2.0-51949092646 http://www.evolutionary-ecology.com/abstracts/v10/2306.html fisherian sex allocation maternal and paternal age temperature time-series analysis Text Journal Article 2008 fteawag 2023-04-09T04:47:33Z Question: Do humans overproduce the rarer sex in response to skews in the local operational sex ratio (OSR)? And how should one define the OSR in humans? Hypothesis: We predicted that instead of the current adult sex ratio used in previous studies as a cue for the local OSR, parents should use the offspring sex ratio of the immediate preceding cohorts (estimated by an average spousal age difference at marriage) that comprise the most potential mates for their offspring. Organism: Two historical (1718-1890) Sami populations from Northern Finland. Analytical methods: Multivariate linear dynamic regression models to examine the delayed ratio-dependence of annual offspring sex ratio at birth, while controlling for the potential effects of annual maternal and paternal age at reproduction and reconstructed mean ambient temperature. Results: One of the two Sami populations studied showed evidence for the compensatory production of the rarer sex in relation to the skews in predicted local OSR. Article in Journal/Newspaper Northern Finland sami DORA Eawag |
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English |
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fisherian sex allocation maternal and paternal age temperature time-series analysis |
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fisherian sex allocation maternal and paternal age temperature time-series analysis Helle, Samuli Käär, Pekka Helama, Samuli Jokela, Jukka Do humans adjust offspring sex according to the local operational sex ratio? |
topic_facet |
fisherian sex allocation maternal and paternal age temperature time-series analysis |
description |
Question: Do humans overproduce the rarer sex in response to skews in the local operational sex ratio (OSR)? And how should one define the OSR in humans? Hypothesis: We predicted that instead of the current adult sex ratio used in previous studies as a cue for the local OSR, parents should use the offspring sex ratio of the immediate preceding cohorts (estimated by an average spousal age difference at marriage) that comprise the most potential mates for their offspring. Organism: Two historical (1718-1890) Sami populations from Northern Finland. Analytical methods: Multivariate linear dynamic regression models to examine the delayed ratio-dependence of annual offspring sex ratio at birth, while controlling for the potential effects of annual maternal and paternal age at reproduction and reconstructed mean ambient temperature. Results: One of the two Sami populations studied showed evidence for the compensatory production of the rarer sex in relation to the skews in predicted local OSR. |
format |
Article in Journal/Newspaper |
author |
Helle, Samuli Käär, Pekka Helama, Samuli Jokela, Jukka |
author_facet |
Helle, Samuli Käär, Pekka Helama, Samuli Jokela, Jukka |
author_sort |
Helle, Samuli |
title |
Do humans adjust offspring sex according to the local operational sex ratio? |
title_short |
Do humans adjust offspring sex according to the local operational sex ratio? |
title_full |
Do humans adjust offspring sex according to the local operational sex ratio? |
title_fullStr |
Do humans adjust offspring sex according to the local operational sex ratio? |
title_full_unstemmed |
Do humans adjust offspring sex according to the local operational sex ratio? |
title_sort |
do humans adjust offspring sex according to the local operational sex ratio? |
publisher |
Evolutionary Ecology |
publishDate |
2008 |
url |
http://www.evolutionary-ecology.com/abstracts/v10/2306.html |
genre |
Northern Finland sami |
genre_facet |
Northern Finland sami |
op_relation |
Evolutionary Ecology Research--Evol. Ecol. Res.--journals:956--1522-0613 eawag:6041 journal id: journals:956 issn: 1522-0613 ut: 000258747100009 local: 13632 scopus: 2-s2.0-51949092646 http://www.evolutionary-ecology.com/abstracts/v10/2306.html |
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1766144346559610880 |