Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria)
Sex-chromosome differentiation was recently shown to vary among common frog populations in Fennoscandia, suggesting a trend of increased differentiation with latitude. By rearing families from two contrasted populations (respectively, from northern and southern Sweden), we show this disparity to ste...
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ftdryad:oai:v1.datadryad.org:10255/dryad.78975 2023-05-15T16:12:02+02:00 Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) Rodrigues, Nicolas Vuille, Yvan Loman, Jon Perrin, Nicolas Sweden 2015-03-12T14:06:25Z http://hdl.handle.net/10255/dryad.78975 https://doi.org/10.5061/dryad.4j169 unknown doi:10.5061/dryad.4j169/1 doi:10.1098/rspb.2014.2726 PMID:25833852 doi:10.5061/dryad.4j169 Rodrigues N, Vuille Y, Loman J, Perrin N (2015) Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria). Proceedings of the Royal Society B 282(1806): 20142726. http://hdl.handle.net/10255/dryad.78975 sex chromosomes sex ratio Gonadal development XY recombination epigenetic sex determination Article 2015 ftdryad https://doi.org/10.5061/dryad.4j169 https://doi.org/10.5061/dryad.4j169/1 https://doi.org/10.1098/rspb.2014.2726 2020-01-01T15:15:49Z Sex-chromosome differentiation was recently shown to vary among common frog populations in Fennoscandia, suggesting a trend of increased differentiation with latitude. By rearing families from two contrasted populations (respectively, from northern and southern Sweden), we show this disparity to stem from differences in sex-determination mechanisms rather than in XY-recombination patterns. Offspring from the northern population display equal sex ratios at metamorphosis, with phenotypic sexes that correlate strongly with paternal LG2 haplotypes (the sex chromosome); accordingly, Y haplotypes are markedly differentiated, with male-specific alleles and depressed diversity testifying to their smaller effective population size. In the southern population, by contrast, a majority of juveniles present ovaries at metamorphosis; only later in development do sex ratios return to equilibrium. Even at these later stages, phenotypic sexes correlate only mildly with paternal LG2 haplotypes; accordingly, there are no recognizable Y haplotypes. These distinct patterns of gonadal development fit the concept of ‘sex races’ proposed in the 1930s, with our two populations assigned to the ‘differentiated’ and ‘semi-differentiated’ races, respectively. Our results support the suggestion that ‘sex races’ differ in the genetic versus epigenetic components of sex determination. Analysing populations from the ‘undifferentiated race’ with high-density genetic maps should help to further test this hypothesis. Article in Journal/Newspaper Fennoscandia Dryad Digital Repository (Duke University) |
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Dryad Digital Repository (Duke University) |
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sex chromosomes sex ratio Gonadal development XY recombination epigenetic sex determination |
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sex chromosomes sex ratio Gonadal development XY recombination epigenetic sex determination Rodrigues, Nicolas Vuille, Yvan Loman, Jon Perrin, Nicolas Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) |
topic_facet |
sex chromosomes sex ratio Gonadal development XY recombination epigenetic sex determination |
description |
Sex-chromosome differentiation was recently shown to vary among common frog populations in Fennoscandia, suggesting a trend of increased differentiation with latitude. By rearing families from two contrasted populations (respectively, from northern and southern Sweden), we show this disparity to stem from differences in sex-determination mechanisms rather than in XY-recombination patterns. Offspring from the northern population display equal sex ratios at metamorphosis, with phenotypic sexes that correlate strongly with paternal LG2 haplotypes (the sex chromosome); accordingly, Y haplotypes are markedly differentiated, with male-specific alleles and depressed diversity testifying to their smaller effective population size. In the southern population, by contrast, a majority of juveniles present ovaries at metamorphosis; only later in development do sex ratios return to equilibrium. Even at these later stages, phenotypic sexes correlate only mildly with paternal LG2 haplotypes; accordingly, there are no recognizable Y haplotypes. These distinct patterns of gonadal development fit the concept of ‘sex races’ proposed in the 1930s, with our two populations assigned to the ‘differentiated’ and ‘semi-differentiated’ races, respectively. Our results support the suggestion that ‘sex races’ differ in the genetic versus epigenetic components of sex determination. Analysing populations from the ‘undifferentiated race’ with high-density genetic maps should help to further test this hypothesis. |
format |
Article in Journal/Newspaper |
author |
Rodrigues, Nicolas Vuille, Yvan Loman, Jon Perrin, Nicolas |
author_facet |
Rodrigues, Nicolas Vuille, Yvan Loman, Jon Perrin, Nicolas |
author_sort |
Rodrigues, Nicolas |
title |
Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) |
title_short |
Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) |
title_full |
Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) |
title_fullStr |
Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) |
title_full_unstemmed |
Data from: Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria) |
title_sort |
data from: sex-chromosome differentiation and ‘sex races’ in the common frog (rana temporaria) |
publishDate |
2015 |
url |
http://hdl.handle.net/10255/dryad.78975 https://doi.org/10.5061/dryad.4j169 |
op_coverage |
Sweden |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
doi:10.5061/dryad.4j169/1 doi:10.1098/rspb.2014.2726 PMID:25833852 doi:10.5061/dryad.4j169 Rodrigues N, Vuille Y, Loman J, Perrin N (2015) Sex-chromosome differentiation and ‘sex races’ in the common frog (Rana temporaria). Proceedings of the Royal Society B 282(1806): 20142726. http://hdl.handle.net/10255/dryad.78975 |
op_doi |
https://doi.org/10.5061/dryad.4j169 https://doi.org/10.5061/dryad.4j169/1 https://doi.org/10.1098/rspb.2014.2726 |
_version_ |
1765997265469571072 |