Abstract:
:Restriction-site-associated DNA sequencing (RAD-seq) and related methods are revolutionizing the field of population genomics in nonmodel organisms as they allow generating an unprecedented number of single nucleotide polymorphisms (SNPs) even when no genomic information is available. Yet, RAD-seq data analyses rely on assumptions on nature and number of nucleotide variants present in a single locus, the choice of which may lead to an under- or overestimated number of SNPs and/or to incorrectly called genotypes. Using the Atlantic mackerel (Scomber scombrus L.) and a close relative, the Atlantic chub mackerel (Scomber colias), as case study, here we explore the sensitivity of population structure inferences to two crucial aspects in RAD-seq data analysis: the maximum number of mismatches allowed to merge reads into a locus and the relatedness of the individuals used for genotype calling and SNP selection. Our study resolves the population structure of the Atlantic mackerel, but, most importantly, provides insights into the effects of alternative RAD-seq data analysis strategies on population structure inferences that are directly applicable to other species.
journal_name
Mol Ecol Resourjournal_title
Molecular ecology resourcesauthors
Rodríguez-Ezpeleta N,Bradbury IR,Mendibil I,Álvarez P,Cotano U,Irigoien Xdoi
10.1111/1755-0998.12518subject
Has Abstractpub_date
2016-07-01 00:00:00pages
991-1001issue
4eissn
1755-098Xissn
1755-0998journal_volume
16pub_type
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