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Population genomics of marine fishes: identifying adaptive variation in space and time
TLDR
A review of achievements in marine fish genomics to date and potential avenues for future research, which will provide both general insights into evolution in high gene flow species, as well as specific knowledge which can lead to improved management of marine organisms are highlighted. Expand
Environmental selection on transcriptome‐derived SNPs in a high gene flow marine fish, the Atlantic herring (Clupea harengus)
TLDR
The results reveal a complex pattern of varying spatial genetic variation among outlier loci, likely reflecting adaptations to local environments in a highly vagile species, and emphasize the need to preserve functionally important biodiversity. Expand
Marine landscapes and population genetic structure of herring (Clupea harengus L.) in the Baltic Sea
TLDR
Application of a novel method for detecting barriers to gene flow by combining geographical coordinates and genetic differentiation allowed us to identify two zones of lowered gene flow that were concordant with the separation of the Baltic Sea into major basins, with environmental gradients and with differences in migration behaviour. Expand
Application of SNPs for population genetics of nonmodel organisms: new opportunities and challenges
TLDR
Common issues when employing SNP markers are discussed, including the high numbers of markers typically employed, the effects of ascertainment bias and the inclusion of nonneutral loci in a marker panel. Expand
Disentangling the Effects of Evolutionary, Demographic, and Environmental Factors Influencing Genetic Structure of Natural Populations: Atlantic Herring as a Case Study
TLDR
The genetic signal left by the demographic history of herring seems to have been largely eroded, which is not surprising given the large reproductive potential and presumed enormous local effective population sizes of pelagic fish that constrain the effect of stochastic processes. Expand
ENVIRONMENTAL CORRELATES OF POPULATION DIFFERENTIATION IN ATLANTIC HERRING
TLDR
It is shown that reproductive isolation can be maintained in marine fish populations exhibiting substantial mixing during larval and adult life stages, and analyses incorporating genetic, spatial, and environmental parameters indicated that isolation mechanisms are associated with the specific salinity conditions on spawning locations. Expand
Biocomplexity in a highly migratory pelagic marine fish, Atlantic herring
TLDR
Evidence of correlated genetic and life history differentiation in an abundant and highly migratory pelagic fish, Atlantic herring, Clupea harengus, in the North Sea and adjacent areas is described and suggests the existence of more complex patterns of intraspecific diversity than was previously recognized. Expand
Long‐term effective population sizes, temporal stability of genetic composition and potential for local adaptation in anadromous brown trout (Salmo trutta) populations
TLDR
The requirements for local adaptation were fulfilled, but only adaptations resulting from strong selection were expected to occur at the level of individual populations, and the documented recent declines of many other anadromous brown trout populations may affect the persistence of local adaptation. Expand
A genomic island linked to ecotype divergence in Atlantic cod
TLDR
The results suggest that ‘genomic mosaics’ of differentiation may even be found under high levels of gene flow and that marine fishes may provide insightful model systems for studying and identifying initial targets of selection during ecological divergence. Expand
Outlier SNP markers reveal fine‐scale genetic structuring across European hake populations (Merluccius merluccius)
TLDR
Outlier loci separated North Sea and Northern Portugal populations from all other Atlantic samples and revealed a strong differentiation among Western, Central and Eastern Mediterranean geographical samples, supporting the hypothesis that populations might be adapted to local conditions. Expand
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