Tracing the footprints of a moving hybrid zone under a demographic history of speciation with gene flow
| العنوان: | Tracing the footprints of a moving hybrid zone under a demographic history of speciation with gene flow |
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| المؤلفون: | Lluvia Flores-Rentería, Mitra Menon, Kristen M. Waring, Erin L. Landguth, Samuel A. Cushman, Christian Wehenkel, Justin C. Bagley, Andrew J. Eckert, Alejandro Leal-Sáenz, Anna W. Schoettle |
| المصدر: | Evolutionary Applications, Vol 13, Iss 1, Pp 195-209 (2020) Evolutionary Applications |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, range dynamics, Species distribution, Biodiversity, forest management, lcsh:Evolution, Introgression, Special Issue Original Article, Biology, 010603 evolutionary biology, 01 natural sciences, Gene flow, 03 medical and health sciences, hybrid zones, Hybrid zone, Genetics, CDMetaPOP, lcsh:QH359-425, Special Issue Original Articles, Ecology, Evolution, Behavior and Systematics, Genetic diversity, Cline (biology), Reproductive isolation, 15. Life on land, hybrid zone movement, 030104 developmental biology, Evolutionary biology, conifers, cline analysis, General Agricultural and Biological Sciences |
| الوصف: | A lack of optimal gene combinations, as well as low levels of genetic diversity, is often associated with the formation of species range margins. Conservation efforts rely on predictive modelling using abiotic variables and assessments of genetic diversity to determine target species and populations for controlled breeding, germplasm conservation and assisted migration. Biotic factors such as interspecific competition and hybridization, however, are largely ignored, despite their prevalence across diverse taxa and their role as key evolutionary forces. Hybridization between species with well‐developed barriers to reproductive isolation often results in the production of offspring with lower fitness. Generation of novel allelic combinations through hybridization, however, can also generate positive fitness consequences. Despite this possibility, hybridization‐mediated introgression is often considered a threat to biodiversity as it can blur species boundaries. The contribution of hybridization towards increasing genetic diversity of populations at range margins has only recently gathered attention in conservation studies. We assessed the extent to which hybridization contributes towards range dynamics by tracking spatio‐temporal changes in the central location of a hybrid zone between two recently diverged species of pines: Pinus strobiformis and P. flexilis. By comparing geographic cline centre estimates for global admixture coefficient with morphological traits associated with reproductive output, we demonstrate a northward shift in the hybrid zone. Using a combination of spatially explicit, individual‐based simulations and linkage disequilibrium variance partitioning, we note a significant contribution of adaptive introgression towards this northward movement, despite the potential for differences in regional population size to aid hybrid zone movement. Overall, our study demonstrates that hybridization between recently diverged species can increase genetic diversity and generate novel allelic combinations. These novel combinations may allow range margin populations to track favourable climatic conditions or facilitate adaptive evolution to ongoing and future climate change. |
| اللغة: | English |
| تدمد: | 1752-4571 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f407442177bd89e90ab110aef9695d34 https://doaj.org/article/470d11913e7f4c25ba3664ddc748217c |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f407442177bd89e90ab110aef9695d34 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17524571 |
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