Darwin's Fancy Revised: An Updated Understanding of the Genomic Constitution of Pigeon Breeds

George Pacheco, Hein Van Grouw, Michael D. Shapiro, Marcus Thomas P. Gilbert, Filipe Garrett Vieira, Jay Storz

Research output: Contribution to journalArticlepeer-review

Abstract

Through its long history of artificial selection, the rock pigeon (Columba livia Gmelin 1789) was forged into a large number of domestic breeds. The incredible amount of phenotypic diversity exhibited in these breeds has long held the fascination of scholars, particularly those interested in biological inheritance and evolution. However, exploiting them as a model system is challenging, as unlike with many other domestic species, few reliable records exist about the origins of, and relationships between, each of the breeds. Therefore, in order to broaden our understanding of the complex evolutionary relationships among pigeon breeds, we generated genome-wide data by performing the genotyping-by-sequencing (GBS) method on close to 200 domestic individuals representing over 60 breeds. We analyzed these GBS data alongside previously published whole-genome sequencing data, and this combined analysis allowed us to conduct the most extensive phylogenetic analysis of the group, including two feral pigeons and one outgroup. We improve previous phylogenies, find considerable population structure across the different breeds, and identify unreported interbreed admixture events. Despite the reduced number of loci relative to whole-genome sequencing, we demonstrate that GBS data provide sufficient analytical power to investigate intertwined evolutionary relationships, such as those that are characteristic of animal domestic breeds. Thus, we argue that future studies should consider sequencing methods akin to the GBS approach as an optimal cost-effective approach for addressing complex phylogenies.

Original languageEnglish (US)
Pages (from-to)136-150
Number of pages15
JournalGenome Biology and Evolution
Volume12
Issue number3
DOIs
StatePublished - Mar 17 2020

Keywords

  • animal breeding
  • genotyping-by-sequencing
  • pigeon breeds
  • population genomics

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Genetics

Fingerprint Dive into the research topics of 'Darwin's Fancy Revised: An Updated Understanding of the Genomic Constitution of Pigeon Breeds'. Together they form a unique fingerprint.

Cite this