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Chromosomal Inversion Associated With Diet Differences in Common Quails Sharing Wintering Grounds.

Celia Vinagre-Izquierdo1, Ines Sanchez-Donoso1, Jennifer A Leonard1

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Summary
This summary is machine-generated.

A specific chromosomal inversion in common quails is linked to distinct traits and limited migration. This leads to two genetically distinct populations coexisting in wintering grounds, impacting their behavior and resource use.

Keywords:
chromosomal inversiondietgenotyping by sequencingmigrationstable isotopes

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Area of Science:

  • Evolutionary genetics
  • Behavioral ecology
  • Conservation biology

Background:

  • Chromosomal inversions are significant drivers of genetic differentiation and adaptation.
  • A large inversion in common quails (Coturnix coturnix) influences traits like body size and flight efficiency, potentially affecting migration.

Purpose of the Study:

  • To investigate if a high frequency of a specific chromosomal inversion explains the presence of resident common quails in southern Iberia.
  • To analyze the genomic composition, morphology, and migratory behavior of wintering quails in southern Spain.

Main Methods:

  • Surveyed a wintering population of common quails.
  • Analyzed genomic composition, morphology, and stable isotope ratios (deuterium, nitrogen, carbon) in primary feathers.
  • Inferred migratory behavior and diet from stable isotope signatures.

Main Results:

  • Identified coexistence of quails with and without the chromosomal inversion, exhibiting different morphologies and migratory behaviors.
  • Quails with the inversion showed limited migration, while those without appeared to originate from other latitudes.
  • Migratory quails exhibited dietary differences compared to resident quails.

Conclusions:

  • Two distinct, coexisting chromosomal lineages of common quails exist in the wintering area, differing in morphology, behavior, and resource use.
  • The lack of recombination within the inversion is expected to promote further divergence between these lineages.
  • This chromosomal polymorphism plays a crucial role in the ecological and evolutionary dynamics of common quails.