000 02731 am a22002893u 4500
042 _adc
100 1 0 _aChaturvedi, Samridhi
_eauthor
_91702
700 1 0 _aGompert, Zachariah
_eauthor
_91703
700 1 0 _aFeder, Jeffrey L.
_eauthor
_91704
700 1 0 _aOsborne, Owen G.
_eauthor
_91705
700 1 0 _aMuschick, Moritz
_eauthor
_91706
700 1 0 _aRiesch, Rüdiger
_eauthor
_91707
700 1 0 _aSoria-Carrasco, Víctor
_eauthor
_91708
700 1 0 _aNosil, Patrik
_eauthor
_91709
245 0 0 _aClimatic similarity and genomic background shape the extent of parallel adaptation in Timema stick insects
260 _c2022-10-24.
500 _a/pmc/articles/PMC7613875/
500 _a/pubmed/36280782
520 _aEvolution can repeat itself, resulting in parallel adaptations in independent lineages occupying similar environments. Moreover, parallel evolution sometimes, but not always, uses the same genes. Two main hypotheses have been put forth to explain the probability and extent of parallel evolution. First, parallel evolution is more likely when shared ecologies result in similar patterns of natural selection in different taxa. Second, parallelism is more likely when genomes are similar, because of shared standing variation and similar mutational effects in closely related genomes. Here we combine ecological, genomic, experimental, and phenotypic data with Bayesian modeling and randomization tests to quantify the degree of parallelism and its relationship with ecology and genetics. Our results show that the extent to which genomic regions associated with climate are parallel among species of Timema stick insects is shaped collectively by shared ecology and genomic background. Specifically, the extent of genomic parallelism decays with divergence in climatic conditions (i.e., habitat or ecological similarity) and genomic similarity. Moreover, we find that climate-associated loci are likely subject to selection in a field experiment, overlap with genetic regions associated with cuticular hydrocarbon traits, and are not strongly shaped by introgression between species. Our findings shed light on when evolution is most expected to repeat itself.
540 _a
540 _ahttps://www.springernature.com/gp/open-research/policies/accepted-manuscript-termsUsers may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use: https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms
546 _aen
690 _aArticle
655 7 _aText
_2local
786 0 _nNat Ecol Evol
856 4 1 _uhttp://dx.doi.org/10.1038/s41559-022-01909-6
_zConnect to this object online.
999 _c1863
_d1863