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Related Experiment Video

Updated: May 15, 2025

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
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Parallel and convergent evolution in genes underlying seasonal migration.

Luz E Zamudio-Beltrán1,2, Christen M Bossu3, Alfredo A Bueno-Hernández1

  • 1Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico.

Evolution Letters
|April 7, 2025
PubMed
Summary

This study reveals parallel evolution in genes controlling biological timekeeping in Common Yellowthroats, suggesting multiple genetic pathways contribute to bird migration. The research explored genomic regions linked to migratory behavior across different populations.

Keywords:
Geothlypis trichascandidate genesconvergent evolutiongenomic variationmigrationparallel evolution

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Area of Science:

  • Evolutionary Biology
  • Genomics
  • Ornithology

Background:

  • Seasonal migration is a complex behavior with a poorly understood genetic basis.
  • Previous studies show limited consensus on shared genomic regions underlying migration across species.
  • The Common Yellowthroat (Geothlypis trichas) offers a model to study parallel evolution of migratory behavior due to distinct North American clades.

Purpose of the Study:

  • To investigate the genetic basis of migratory phenotypes within the Common Yellowthroat.
  • To identify genomic regions and genes associated with seasonal migration.
  • To assess the extent of parallel or convergent evolution in migratory genes between eastern and western clades.

Main Methods:

  • Genome-wide population genetic structure analysis of 196 Common Yellowthroats from 22 locations.
  • Identification of selection signals by comparing resident and migratory phenotypes within and between clades.
  • Analysis focused on identifying candidate genes involved in seasonal migration.

Main Results:

  • Widespread support for parallel evolution at the genic level, especially in genes related to biological timekeeping.
  • Limited evidence of parallelism at the individual single nucleotide polymorphism (SNP) level.
  • Genetic structure analysis revealed population-level variations across the breeding range.

Conclusions:

  • Parallel evolution plays a significant role in the genetic architecture of migration at the gene level.
  • Multiple distinct genetic pathways likely contribute to the modulation of migratory behavior.
  • Understanding the genetic basis of migration requires examining both shared and unique evolutionary trajectories.