The great tit HapMap project: a continental-scale analysis of genomic variation in a songbird
[EN] A major aim of evolutionary biology is to understand why patterns of genomic diversity vary within taxa and across space. Large-scale genomic studies of widespread species are useful for studying how environment and demography shape patterns of genomic divergence. Here, we describe one of the m...
| Autores: | , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/230710 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/230710 |
| Access Level: | acceso abierto |
| Palabra clave: | Adaptation Birds Ecological genetics Genomics Molecular evolution Population genetics Proteomics 15.- Proteger, restaurar y promover la utilización sostenible de los ecosistemas terrestres, gestionar de manera sostenible los bosques, combatir la desertificación y detener y revertir la degradación de la tierra, y frenar la pérdida de diversidad biológica |
| Sumario: | [EN] A major aim of evolutionary biology is to understand why patterns of genomic diversity vary within taxa and across space. Large-scale genomic studies of widespread species are useful for studying how environment and demography shape patterns of genomic divergence. Here, we describe one of the most geographically comprehensive surveys of genomic variation in a wild vertebrate to date—the great tit (Parus major) HapMap project. We screened ~500,000 SNP markers across 647 individuals from 29 populations spanning ~30° of latitude and 40° of longitude—almost the entire geographical range of the European subspecies. Genome-wide variation was consistent with a recent colonisation across Europe from a south-eastern European refugium, with bottlenecks and reduced genetic diversity in island populations. Differentiation across the genome was highly heterogeneous, with clear ‘islands of differentiation’, even among populations with very low levels of genome-wide differentiation. Low local recombination rates were a strong predictor of high local genomic differentiation (F_ST), especially in island and peripheral mainland populations. |
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