Genomic Islands of Divergence Between Drosophila yakuba Subspecies are Predominantly Driven by Chromosomal Inversions and the Recombination Landscape.

ABSTRACT: During the early stages of local adaptation and speciation, genetic differences tend to accumulate at certain regions of the genome leading to the formation of genomic islands of divergence (GIDs). This pattern may be due to selection and/or difference in the rate of recombination. Here, we investigate the possible causes of GIDs in Drosophila yakuba mayottensis, and reconfirm using field collection its association with toxic noni (Morinda citrifolia) fruits on the Mayotte island. Population genomics revealed lack of genetic structure on the island and identified 23 GIDs distinguishing D. y. mayottensis from generalist mainland populations of D. y. yakuba. The GIDs were enriched with gene families involved in the metabolism of lipids, sugars, peptides and xenobiotics, suggesting a role in

SUBMITTER: Ferreira EA 

PROVIDER: S-EPMC11757039 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature