Genetic population structure constrains local adaptation in sticklebacks
نویسندگان
چکیده
منابع مشابه
Partially repeatable genetic basis of benthic adaptation in threespine sticklebacks.
The extent to which convergent adaptation to similar ecological niches occurs by a predictable genetic basis remains a fundamental question in biology. Threespine stickleback fish have undergone an adaptive radiation in which ancestral oceanic populations repeatedly colonized and adapted to freshwater habitats. In multiple lakes in British Columbia, two different freshwater ecotypes have evolve...
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Adaptation in response to selection on polygenic phenotypes occurs via subtle allele frequencies shifts at many loci. Current population genomic techniques are not well posed to identify such signals. In the past decade, detailed knowledge about the specific loci underlying polygenic traits has begun to emerge from genome-wide association studies (GWAS). Here we combine this knowledge from GWAS...
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The contemporary distribution and genetic structure of a freshwater fish provide insight into its historical geodispersal and geographical isolation following Quaternary climate changes. The short ninespine stickleback, Pungitius kaibarae, is a small gasterosteid fish occurring in freshwater systems on the Korean Peninsula and in southeast Russia. On the Korean Peninsula, P. kaibarae population...
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The order of genes in the genome is commonly thought to have functional significance for gene regulation and fitness but has not heretofore been tested experimentally. We adapted a bacteriophage T7 variant harboring an ectopically positioned RNA polymerase gene to determine whether it could regain the fitness of the wild type. Two replicate lines maintained the starting gene order and showed on...
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BACKGROUND Quercus oleoides Cham. and Schlect., tropical live oak, is a species of conservation importance in its southern range limit of northwestern Costa Rica. It occurs in high-density stands across a fragmented landscape spanning a contrasting elevation and precipitation gradient. We examined genetic diversity and spatial genetic structure in this geographically isolated and genetically di...
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ژورنال
عنوان ژورنال: Molecular Ecology
سال: 2021
ISSN: 0962-1083,1365-294X
DOI: 10.1111/mec.15808