Data from: Assessing pre- and post-zygotic barriers between North Atlantic eels (Anguilla anguilla and A. rostrata) ...

• Main Authors: Jacobsen, Magnus W., Smedegaard, Line, Sørensen, Sune R., Pujolar, José M., Munk, Peter, Jónsson, Bjarni, Magnussen, Eyðfinn, Hansen, Michael M.
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: Anguilla anguilla; cytonuclear incompatibility; Anguilla rostrata; hybrids; 2000-2014; Atlantic eels; North Atlantic
• Online Access: https://dx.doi.org/10.5061/dryad.v5m24; https://datadryad.org/stash/dataset/doi:10.5061/dryad.v5m24

Elucidating barriers to gene flow is important for understanding the dynamics of speciation. Here we investigate pre- and post-zygotic mechanisms acting between the two hybridizing species of Atlantic eels: Anguilla anguilla and A. rostrata. Temporally varying hybridization was examined by analyzing 85 species-diagnostic single-nucleotide polymorphisms (SNPs; FST greater than or equal to0.95) in eel larvae sampled in the spawning region in the Sargasso Sea in 2007 (N=92) and 2014 (N=460). We further investigated whether genotypes at these SNPs were nonrandomly distributed in post-F1 hybrids, indicating selection. Finally, we sequenced the mitochondrial ATP6 and nuclear ATP5c1 genes in 19 hybrids, identified using SNP and restriction site associated DNA (RAD) sequencing data, to test a previously proposed hypothesis of cytonuclear incompatibility leading to adenosine triphosphate (ATP) synthase dysfunction and selection against hybrids. No F1 hybrids but only later backcrosses were observed in the Sargasso ... : FLUIDIGM SNP data in genepop formatFLUIDIGM SNP data in genepop format from all genotyped individuals analyzed in the present study. The data includes both data from the paper of pujolar et al. 2014a and new data.FLUIDIGM_SNP_data.genepopRAD_SNPdata_47eels_1330SNPs_STRUCTURESNP file in STRUCTURE format. The data encompases 47 individuals: 7 hybrids and 20 individuals considered to be pure specimens from each species. The data set was used for estimating hybrid classes for the 7 hybrids. Please see Supporting Information Note 3 for more information. ...