Secondary contact and asymmetrical gene flow in a cosmopolitan marine fish across the Benguela upwelling zone
| Autor: | Paulette Bloomer, Kerry Reid, S.M.R. Dos Santos, Thierry B. Hoareau, A.W. Klopper, John E. Graves, W M Potts |
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| Rok vydání: | 2016 |
| Předmět: |
Gene Flow
0106 biological sciences 0301 basic medicine Demographic history Population Biology DNA Mitochondrial 010603 evolutionary biology 01 natural sciences Gene flow South Africa 03 medical and health sciences Human population genetics Genetics Animals education Atlantic Ocean Ecosystem Genetics (clinical) education.field_of_study Portugal Ecology Genetic Variation Sequence Analysis DNA Senegal Perciformes Spatial heterogeneity Phylogeography Genetics Population 030104 developmental biology Angola Haplotypes Genetic structure Upwelling Original Article Microsatellite Repeats |
| Zdroj: | Heredity. 117:307-315 |
| ISSN: | 1365-2540 0018-067X |
| DOI: | 10.1038/hdy.2016.51 |
| Popis: | The combination of oceanographic barriers and habitat heterogeneity are known to reduce connectivity and leave specific genetic signatures in the demographic history of marine species. However, barriers to gene flow in the marine environment are almost never impermeable which inevitably allows secondary contact to occur. In this study, eight sampling sites (five along the South African coastline, one each in Angola, Senegal and Portugal) were chosen to examine the population genetic structure and phylogeographic history of the cosmopolitan bluefish (Pomatomus saltatrix), distributed across a large South-east Atlantic upwelling zone. Molecular analyses were applied to mtDNA cytochrome b, intron AM2B1 and 15 microsatellite loci. We detected uncharacteristically high genetic differentiation (FST 0.15–0.20; P |
| Databáze: | OpenAIRE |
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