Population structure and genetic diversity in two species of Hawaiian picture-winged Drosophila

Molecular Phylogenetics and Evolution
C Muir, D K Price

Abstract

Over the last several decades many picture-winged Drosophila have become less common in both geographical distribution and local population size (pers. obs., Foote pers. comm., Montgomerey pers. comm.). Here we report on a study of two Hawaiian Drosophila species, D. engyochracea, and D. hawaiiensis, to determine the impact that changes in population sizes over the past thirty years have had on the genetic diversity of these species. D. engyochracea is known from only two locations on the Island of Hawai'i (Kipuka Ki and Kipuka Pua'ulu), while D. hawaiiensis is currently more wide spread across Hawai'i Island. We collected 65 D. hawaiiensis and 66 D. engyochracea from two forest patches (kipuka) isolated by a 400 year old volcanic ash deposit. DNA sequence data for 515 bases of the mitochondrial gene COII was analyzed for both species to estimate relative total genetic diversity as well as inter-kipuka gene flow. The more wide spread species, D. hawaiiensis, has more genetic diversity (23 vs. 11 unique haplotypes) than the rarer species, D. engyochracea. The distribution of haplotypes in the kipuka is consistent with more gene flow in D. engyochracea than in D. hawaiiensis. Phylogenetic analysis indicates a small number of indi...Continue Reading

References

Mar 1, 1972·Theoretical Population Biology·W J Ewens
Jan 27, 1999·Bioinformatics·D Posada, K A Crandall
Feb 1, 1978·Genetics·G A Watterson
Feb 1, 2008·Molecular Phylogenetics and Evolution·D K Price, C Muir

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Citations

May 12, 2017·Journal of Molecular Evolution·Lin KangPawel Michalak
Feb 1, 2008·Molecular Phylogenetics and Evolution·D K Price, C Muir

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