RADseq analyses reveal concordant Indian Ocean biogeographic and phylogeographic boundaries in the reef fish
Autor: | Salas, E. M., Bernardi, G., Berumen, M. L., Gaither, M. R., Rocha, L. A. |
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Rok vydání: | 2018 |
Předmět: |
0106 biological sciences
population genomics Coral reef fish Population Biodiversity 010603 evolutionary biology 01 natural sciences Population genomics 03 medical and health sciences Dascyllus trimaculatus Damselfish education Indian Ocean 030304 developmental biology 0303 health sciences Dascyllus education.field_of_study Multidisciplinary biology Biology (Whole Organism) outlier loci biology.organism_classification Red Sea Phylogeography Evolutionary biology connectivity Genetic structure Research Article |
Zdroj: | Royal Society Open Science |
ISSN: | 2054-5703 |
Popis: | Population genetic analysis is an important tool for estimating the degree of evolutionary connectivity in marine organisms. Here, we investigate the population structure of the three-spot damselfishDascyllus trimaculatusin the Red Sea, Arabian Sea and Western Indian Ocean, using 1174 single nucleotide polymorphisms (SNPs). Neutral loci revealed a signature of weak genetic differentiation between the Northwestern (Red Sea and Arabian Sea) and Western Indian Ocean biogeographic provinces. Loci potentially under selection (outlier loci) revealed a similar pattern but with a much stronger signal of genetic structure between regions. The Oman population appears to be genetically distinct from all other populations included in the analysis. While we could not clearly identify the mechanisms driving these patterns (isolation, adaptation or both), the datasets indicate that population-level divergences are largely concordant with biogeographic boundaries based on species composition. Our data can be used along with genetic connectivity of other species to identify the common genetic breaks that need to be considered for the conservation of biodiversity and evolutionary processes in the poorly studied Western Indian Ocean region. |
Databáze: | OpenAIRE |
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