ArticleGenetics2009
Species-wide genetic variation and demographic history of Drosophila sechellia, a species lacking population structure.
Article in Genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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Who cites it
30 citing papers in PubMed.
- Genome-wide association studies identify new candidate genes and tissues underlying resistance to a natural toxin in drosophilids.G3 (Bethesda, Md.) · 2026Article
- Comparative single-cell transcriptomic atlases of drosophilid brains suggest glial evolution during ecological adaptation.PLoS biology · 2025Article
- Genomic Islands of Divergence Between Drosophila yakuba Subspecies are Predominantly Driven by Chromosomal Inversions and the Recombination Landscape.Molecular ecology · 2025Article
- Gene Protein Sequence Evolution Can Predict the Rapid Divergence of Ovariole Numbers in the Drosophila melanogaster Subgroup.Genome biology and evolution · 2024Article
- Enrichment of hard sweeps on the X chromosome compared to autosomes in six Drosophila species.Genetics · 2024Article
- Enrichment of hard sweeps on the X chromosome compared to autosomes in six Drosophila species.bioRxiv : the preprint server for biology · 2023Article
- Taste adaptations associated with host specialization in the specialist Drosophila sechellia.The Journal of experimental biology · 2023Article
- Satyrization in Drosophila fruitflies.Journal of evolutionary biology · 2021Article
- Moderate Population Structure inZoological studies · 2021Article
- The roles of vicariance and isolation by distance in shaping biotic diversification across an ancient archipelago: evidence from a Seychelles caecilian amphibian.BMC evolutionary biology · 2020Article
- Dynamic Evolution of Euchromatic Satellites on the X Chromosome in Drosophila melanogaster and the simulans Clade.Molecular biology and evolution · 2020Article
- Supervised machine learning reveals introgressed loci in the genomes of Drosophila simulans and D. sechellia.PLoS genetics · 2018Article
- Drosophila yakuba mayottensis, a new model for the study of incipient ecological speciation.Fly · 2017Article
- Evolutionary Transitions of MicroRNA-Target Pairs.Genome biology and evolution · 2016Article
- Conservation genetics of a threatened butterfly: comparison of allozymes, RAPDs and microsatellites.BMC genetics · 2014Article
- Evolutionary origins and genetic variation of the Seychelles treefrog, Tachycnemis seychellensis (Duméril and Bibron, 1841) (Amphibia: Anura: Hyperoliidae).Molecular phylogenetics and evolution · 2014Article
- Distinguishing migration from isolation using genes with intragenic recombination: detecting introgression in the Drosophila simulans species complex.BMC evolutionary biology · 2014Article
- Insulin signalling underlies both plasticity and divergence of a reproductive trait in Drosophila.Proceedings. Biological sciences · 2014Article
- A selective sweep across species boundaries in Drosophila.Molecular biology and evolution · 2013Article
- Host plant-driven sensory specialization in Drosophila erecta.Proceedings. Biological sciences · 2013Article
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Authors and funding
6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Long-term persistence of species characterized by a reduced effective population size is still a matter of debate that would benefit from the description of new relevant biological models. The island endemic specialist Drosophila sechellia has received considerable attention in evolutionary genetic studies. On the basis of the analysis of a limited number of strains, a handful of studies have reported a strikingly depleted level of genetic variation but little is known about its demographic history. We extended analyses of nucleotide polymorphism in D. sechellia to a species-wide level using 10 nuclear genes sequenced in 10 populations. We confirmed that D. sechellia exhibits little nucleotide-sequence variation. It is characterized by a low effective population size, >10-fold lower than that of D. simulans, which ranks D. sechellia as the least genetically diverse Drosophila species. No obvious population subdivision was detected despite its fragmented geographic distribution on different islands. We used approximate Bayesian computation (ABC) to test for demographic scenarios compatible with the geological history of the Seychelles and the ecology of D. sechellia. We found that while bottlenecks cannot account for the pattern of molecular evolution observed in this species, scenarios close to the null hypothesis of a constant population size are well supported. We discuss these findings with regard to adaptive features specific to D. sechellia and its life-history strategy.
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