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- W3040981656 endingPage "20190548" @default.
- W3040981656 startingPage "20190548" @default.
- W3040981656 abstract "Speciation is a continuous process. Although it is known that differential adaptation can initiate divergence even in the face of gene flow, we know relatively little about the mechanisms driving complete reproductive isolation and the genomic patterns of divergence and introgression at the later stages of speciation. Sticklebacks contain many pairs of sympatric species differing in levels of reproductive isolation and divergence history. Nevertheless, most previous studies have focused on young species pairs. Here, we investigated two sympatric stickleback species, Pungitius pungitius and P. sinensis , whose habitats overlap in eastern Hokkaido; these species show hybrid male sterility, suggesting that they may be at a late stage of speciation. Our demographic analysis using whole-genome sequence data showed that these species split 1.73 Ma and came into secondary contact 37 200 years ago after a period of allopatry. This long period of allopatry might have promoted the evolution of intrinsic incompatibility. Although we detected on-going gene flow and signatures of introgression, overall genomic divergence was high, with considerable heterogeneity across the genome. The heterogeneity was significantly associated with variation in recombination rate. This sympatric pair provides new avenues to investigate the late stages of the stickleback speciation continuum. This article is part of the theme issue ‘Towards the completion of speciation: the evolution of reproductive isolation beyond the first barriers’." @default.
- W3040981656 created "2020-07-16" @default.
- W3040981656 creator A5025306191 @default.
- W3040981656 creator A5031272026 @default.
- W3040981656 creator A5031457413 @default.
- W3040981656 creator A5043334068 @default.
- W3040981656 creator A5054895685 @default.
- W3040981656 creator A5065227938 @default.
- W3040981656 creator A5073728363 @default.
- W3040981656 creator A5086778215 @default.
- W3040981656 date "2020-07-13" @default.
- W3040981656 modified "2023-10-15" @default.
- W3040981656 title "Genome-wide patterns of divergence and introgression after secondary contact between<i>Pungitius</i>sticklebacks" @default.
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