دورية أكاديمية
Contrasting effects of environment and genetics generate a continuum of parallel evolution.
| العنوان: | Contrasting effects of environment and genetics generate a continuum of parallel evolution. |
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| المؤلفون: | Stuart YE; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Veen T; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Weber JN; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Hanson D; Redpath Museum, McGill University, Montreal, Quebec H3A 2K6, Canada., Ravinet M; Department of Biosciences, University of Oslo, Oslo 0316, Norway., Lohman BK; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Thompson CJ; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Tasneem T; Austin Independent School District, Austin, Texas 78703, USA., Doggett A; Austin Independent School District, Austin, Texas 78703, USA., Izen R; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Ahmed N; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA., Barrett RDH; Redpath Museum, McGill University, Montreal, Quebec H3A 2K6, Canada., Hendry AP; Redpath Museum, McGill University, Montreal, Quebec H3A 2K6, Canada., Peichel CL; Divisions of Basic Sciences and Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA., Bolnick DI; Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712, USA. |
| المصدر: | Nature ecology & evolution [Nat Ecol Evol] 2017 May 22; Vol. 1 (6), pp. 158. Date of Electronic Publication: 2017 May 22. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Springer Nature Country of Publication: England NLM ID: 101698577 Publication Model: Electronic Cited Medium: Internet ISSN: 2397-334X (Electronic) Linking ISSN: 2397334X NLM ISO Abbreviation: Nat Ecol Evol Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: [London] : Springer Nature |
| مستخلص: | Parallel evolution of similar traits by independent populations in similar environments is considered strong evidence for adaptation by natural selection. Often, however, replicate populations in similar environments do not all evolve in the same way, thus deviating from any single, predominant outcome of evolution. This variation might arise from non-adaptive, population-specific effects of genetic drift, gene flow or limited genetic variation. Alternatively, these deviations from parallel evolution might also reflect predictable adaptation to cryptic environmental heterogeneity within discrete habitat categories. Here, we show that deviations from parallel evolution are the consequence of environmental variation within habitats combined with variation in gene flow. Threespine stickleback (Gasterosteus aculeatus) in adjoining lake and stream habitats (a lake-stream 'pair') diverge phenotypically, yet the direction and magnitude of this divergence is not always fully parallel among 16 replicate pairs. We found that the multivariate direction of lake-stream morphological divergence was less parallel between pairs whose environmental differences were less parallel. Thus, environmental heterogeneity among lake-stream pairs contributes to deviations from parallel evolution. Additionally, likely genomic targets of selection were more parallel between environmentally more similar pairs. In contrast, variation in the magnitude of lake-stream divergence (independent of direction) was better explained by differences in lake-stream gene flow; pairs with greater lake-stream gene flow were less morphologically diverged. Thus, both adaptive and non-adaptive processes work concurrently to generate a continuum of parallel evolution across lake-stream stickleback population pairs. |
| تواريخ الأحداث: | Date Created: 20170817 Latest Revision: 20191120 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1038/s41559-017-0158 |
| PMID: | 28812631 |
| قاعدة البيانات: | MEDLINE |
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