Data from: Investigating the extent of parallelism in morphological and genomic divergence among lake trout ecotypes in Lake Superior
| Main Authors: | Perreault-Payette, Alysse, Muir, Andrew M., Goetz, Frederick, Perrier, Charles, Normandeau, Eric, Sirois, Pascal, Bernatchez, Louis |
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| Format: | info dataset Journal |
| Terbitan: |
, 2017
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| Online Access: |
https://zenodo.org/record/5000150 |
Daftar Isi:
- Understanding the emergence of species through the process of ecological speciation is a central question in evolutionary biology which also has implications for conservation and management. Lake Trout (Salvelinus namaycush) is renowned for the occurrence of different ecotypes linked to resource and habitat use throughout North America. We aimed to unravel the fine genetic structure of the four Lake Trout ecotypes in Lake Superior. A total of 486 individuals from four sites were genotyped at 6822 filtered SNPs using RADseq technology. Our results revealed different extent of morphological and genetic differentiation within the different sites. Overall, genetic differentiation was weak but significant and was on average three times higher between sites (Mean FST = 0.016) than between ecotypes within sites (Mean FST = 0.005) indicating higher level of gene flow or a more recent shared ancestor between ecotypes within each site than between populations of the same ecotype. Evidence of divergent selection was also found between ecotypes and/or in association with morphological variation. Outlier loci found in genes related to lipid metabolism and visual acuity were of particular interest in this context of ecotypic divergence. However, we did not find clear indication of parallelism at the genomic level, despite the presence of phenotypic parallelism among some ecotypes from different sampling sites. Overall, the occurrence of different levels of both genomic and phenotypic differentiation between ecotypes within each site with several differentiated loci linked to relevant biological functions support the presence of a continuum of divergence in Lake Trout.
- Geometric morphometric data for body shape for Big ReefLandmarks and semi-landmarks for body shape for Big Reef fishBig_Reef_104indv_body.TPSGenotype data in .vcf formatFiltered SNPs in .vcf format from 486 individuals genotyped at 6822 SNPSdata_6822filtered_snp_486indv_4pop.vcfGeometric morphometric data for head shape for Big ReefLandmarks and semi-landmarks for head shape for Big ReefBig_Reef_104indv_head.TPSGeometric morphometric data for body shape for Isle RoyaleLandmarks and semi-landmarks for body shape for Isle Royale in .tps formatIsle_Royale_144indv_body.TPSGeometric morphometric data for head shape for Isle RoyaleLandmarks and semi-landmarks for head shape for Isle Royale in .tps formatIsle_Royale_144indv_head.TPSGeometric morphometric data for body shape for Stannard RockLandmarks and semi-landmarks for body shape for Stannard Rock in .tps formatStannard_Rock_128indv_body.TPSGeometric morphometric data for head shape for Stannard RockLandmarks and semi-landmarks for head shape for Stannard Rock in .tps formatStannard_Rock_128indv_head.TPSGeometric morphometric data for body shape for Superior ShoalsLandmarks and semi-landmarks for body shape for Superior Shoals in .tps formatSuperior_Shoals_125indv_body.TPSGeometric morphometric data for head shape for Superior ShoalsLandmarks and semi-landmarks for head shape for Superior Shoals in .tps formatSuperior_Shoals_125indv_head.TPSsample_informationInformation for each genotyped individuals