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Tapping the woodpecker tree for evolutionary insight.

Subir B Shakya1, Jérôme Fuchs2, Jean-Marc Pons2

  • 1Department of Biological Sciences and Museum of Natural Science, Louisiana State University, Baton Rouge, LA 70803, USA.

Molecular Phylogenetics and Evolution
|September 12, 2017
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Summary
This summary is machine-generated.

This study presents a comprehensive molecular phylogeny for woodpeckers (Picidae), revealing new insights into their evolutionary relationships and diversification. The findings clarify tribal and generic relationships, suggesting an Old World origin and complex biogeographic history.

Keywords:
BiogeographyConvergenceDiversification ratesPhylogenyPicidaeRate-shifts

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Area of Science:

  • Ornithology
  • Molecular Phylogenetics
  • Evolutionary Biology

Background:

  • Previous molecular phylogenetic studies of woodpeckers (Picidae) have often lacked comprehensive species sampling.
  • Understanding the evolutionary history and relationships within the woodpecker family is crucial for taxonomy and conservation.

Purpose of the Study:

  • To construct a comprehensive molecular phylogenetic tree for the woodpecker family (Picidae) using a large species sample.
  • To investigate intrafamilial relationships, diversification rates, and biogeographic patterns within woodpeckers.

Main Methods:

  • DNA sequences from six genetic loci were analyzed for 203 of the 217 recognized woodpecker species.
  • Phylogenetic analyses were conducted to infer evolutionary relationships and construct a family-wide tree.

Main Results:

  • A comprehensive phylogenetic tree revealed numerous known and novel relationships among woodpecker clades and species.
  • The study resolved tribal relationships as (Picini, (Campephilini, Melanerpini)) and found the genus Dinopium to be paraphyletic.
  • Diversification rates increased twice in woodpecker history, with no significant difference found between temperate and tropical species. Biogeographic analysis supported an Old World origin and identified multiple New World-Old World sister relationships.

Conclusions:

  • The comprehensive phylogeny provides a robust framework for understanding woodpecker evolution.
  • The findings highlight the complexity of woodpecker taxonomy due to factors like convergence, mimicry, and potential hybridization.
  • The study underscores the importance of broad species sampling in resolving evolutionary histories.