Genomic Architecture of Rapid Parallel Adaptation to Fresh Water in a Wild Fish.

ABSTRACT: Rapid adaptation to novel environments may drive changes in genomic regions through natural selection. However, the genetic architecture underlying these adaptive changes is still poorly understood. Using population genomic approaches, we investigated the genomic architecture that underlies rapid parallel adaptation of Coilia nasus to fresh water by comparing four freshwater-resident populations with their ancestral anadromous population. Linkage disequilibrium network analysis and population genetic analyses revealed two putative large chromosome inversions on LG6 and LG22, which were enriched for outlier loci and exhibited parallel association with freshwater adaptation. Drastic frequency shifts and elevated genetic differentiation were observed for the two chromosome inversions among po

SUBMITTER: Zong SB 

PROVIDER: S-EPMC8480189 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature