Genomic signatures of relaxed disruptive selection associated with speciation reversal in whitefish
نویسندگان
چکیده
منابع مشابه
Speciation Reversal in European Whitefish (Coregonus lavaretus (L.)) Caused by Competitor Invasion
Invasion of exotic species has caused the loss of biodiversity and imparts evolutionary and ecological changes in the introduced systems. In northern Fennoscandia, European whitefish (Coregonus lavaretus (L.)) is a highly polymorphic species displaying adaptive radiations into partially reproductively isolated and thus genetically differentiated sympatric morphs utilizing the planktivorous and ...
متن کاملThe road toward sympatric speciation in whitefish
For almost every organism there are large gaps in our knowledge about the processes that leads to speciation. The changes an organism undergoes before divergence has occurred have remained a mystery, as it is difficult to say whether or not a species is going to diverge and when. To investigate this unknown the European whitefish (Coregonus lavaretus) and the northern pike (Esox lucius) were st...
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The sequencing of multiple genomes of the same plant species has revealed polymorphic gene and exon loss. Genes associated with disease resistance are overrepresented among those showing structural variations, suggesting an adaptive role for gene and exon presence–absence variation (PAV). To shed light on the possible functional relevance of polymorphic coding region loss and the mechanisms dri...
متن کاملPresence–Absence Variation in A. thaliana Is Primarily Associated with Genomic Signatures Consistent with Relaxed Selective Constraints
The sequencing of multiple genomes of the same plant species has revealed polymorphic gene and exon loss. Genes associated with disease resistance are overrepresented among those showing structural variations, suggesting an adaptive role for gene and exon presence-absence variation (PAV). To shed light on the possible functional relevance of polymorphic coding region loss and the mechanisms dri...
متن کاملSNP signatures of selection on standing genetic variation and their association with adaptive phenotypes along gradients of ecological speciation in lake whitefish species pairs (Coregonus spp.).
As populations adapt to novel environments, divergent selection will promote heterogeneous genomic differentiation via reductions in gene flow for loci underlying adaptive traits. Using a data set of over 100 SNP markers, genome scans were performed to investigate the effect of natural selection maintaining differentiation in five lakes harbouring sympatric pairs of normal and dwarf lake whitef...
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ژورنال
عنوان ژورنال: BMC Evolutionary Biology
سال: 2013
ISSN: 1471-2148
DOI: 10.1186/1471-2148-13-108