Phylogenetic analysis of the cardini group of Drosophila with respect to changes in pigmentation

Jennifer A. Brisson, Jason A Wilder, Hope Hollocher

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Phenotypic variability is the engine that drives future diversification with the expectation that polymorphic ancestors give rise to descendants harboring a subset of the ancestral variation. Here we examine evolutionary transitions from polymorphism to monomorphism in a visually striking New World radiation of fruit flies, the Drosophila cardini group. This group is distributed across the Americas and the Caribbean islands and exhibits a wide spectrum of abdominal pigmentation variation. Specifically, the D. dunni subgroup consists of Caribbean island endemics, each of which is monomorphic for its pigmentation pattern, with an interspecific cline of pigmentation across the islands. The D. cardini subgroup consists of American continental species with wide-ranging distributions and intraspecifically variable abdominal pigmentation. We determined the phylogeny of 18 species and subspecies using three nuclear and three mitochondrial regions analyzed with maximum parsimony, maximum likelihood, and Bayesian methods. The topology produced from a combined dataset exhibited high support values at all nodes, and differed from earlier phylogenetic hypotheses based on polytene chromosome inversion patterns and isozyme data. We find that the D. dunni subgroup species, with the exception of D. belladunni, are derived from a single source not of direct South American origin and their dispersal across the islands of the Caribbean does not follow a simple stepping-stone model. Morphological changes in pigmentation across the island species are incongruent with the colonization history of the group indicating that natural selection may have played a role in the determination of this character. Finally, we demonstrate that monomorphic species have arisen independently from polymorphic ancestors two to three times.

Original languageEnglish (US)
Pages (from-to)1228-1241
Number of pages14
JournalEvolution
Volume60
Issue number6
DOIs
StatePublished - Jun 2006
Externally publishedYes

Fingerprint

Pigmentation
pigmentation
Drosophila
West Indies
phylogenetics
phylogeny
Islands
ancestry
chromosome inversions
Polytene Chromosomes
polytene chromosomes
Bayes Theorem
cline
Genetic Selection
Phylogeny
engines
Bayesian theory
fruit flies
natural selection
topology

Keywords

  • Abdominal pigmentation
  • Caribbean
  • Drosophila cardini group
  • Interspecific cline
  • Polymorphism

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Ecology, Evolution, Behavior and Systematics
  • Agricultural and Biological Sciences (miscellaneous)
  • Genetics(clinical)
  • Ecology
  • Genetics

Cite this

Phylogenetic analysis of the cardini group of Drosophila with respect to changes in pigmentation. / Brisson, Jennifer A.; Wilder, Jason A; Hollocher, Hope.

In: Evolution, Vol. 60, No. 6, 06.2006, p. 1228-1241.

Research output: Contribution to journalArticle

Brisson, Jennifer A. ; Wilder, Jason A ; Hollocher, Hope. / Phylogenetic analysis of the cardini group of Drosophila with respect to changes in pigmentation. In: Evolution. 2006 ; Vol. 60, No. 6. pp. 1228-1241.
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