Multilocus analysis of nucleotide variation inDrosophila madeirensis, an endemic species of the Laurisilva forest in Madeira

• DOI: 10.1111/j.1420-9101.2012.02467.x
• Publication Date: 2012-02-09T17:45:35Z
• Authors: M. KHADEM; A. MUNTÉ; R. CAMACHO; M. AGUADÉ; C. SEGARRA
• Keywords: Drosophila subobscura; Introgression; Nonsynonymous substitution

Abstract Drosophila madeirensis is an endemic species of Madeira that inhabits the island Laurisilva forest. Nucleotide variation in D. analysed six genomic regions and compared to previously reported for same subobscura , abundant Palearctic region closely related . The gene are distributed along O 3 inversion. arrangement monomorphic it was present ancestral populations but went extinct this after origin derived ST 3+4 arrangements. Levels nucleotide polymorphism similar those arrangements frequency spectrum skewed towards rare variants. Purifying selection against deleterious nonsynonymous mutations less effective Although coexist at Madeira, no clear evidence introgression detected studied regions.