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<p>Since its introduction to Europe in the mid-20th century, the hybridization of the ruddy duck (<i>Oxyura jamaicensis</i>) with its native relative, the white-headed duck (<i>Oxyura leucocephala</i>), has been one of the main concerns for the conservation of the latter. Following the detection of several hybridization events at the northern edge of the white-headed duck’s range, the presence of the ruddy duck in the Western Palearctic has been recognized as the primary threat to the long-term survival of the species. Therefore, monitoring the extent of hybridization between the two species is of great importance. Here, we describe 548 new SNP markers, including 292 SNPs to study genetic diversity within the ruddy duck and 161 SNPs to detect hybridization events. These markers were tested on a dataset of 198 samples collected in France and identified as ruddy ducks, and enabled the detection of one hybrid. These new markers also include 95 SNPs to study the genetic diversity within the white-headed duck, which should be validated on a higher number of samples.</p>

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Development of SNP markers for monitoring the genetic diversity and hybridization between the introduced Ruddy Duck and the native White-headed Duck in Europe

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Agathe Pirog,
  • Sabine Rousselot,
  • Cécile Kaerle,
  • Jean-Marc Gillier,
  • Sébastien Reeber,
  • Adrien Tableau,
  • Jean-François Maillard,
  • Guillaume Queney

摘要

Since its introduction to Europe in the mid-20th century, the hybridization of the ruddy duck (Oxyura jamaicensis) with its native relative, the white-headed duck (Oxyura leucocephala), has been one of the main concerns for the conservation of the latter. Following the detection of several hybridization events at the northern edge of the white-headed duck’s range, the presence of the ruddy duck in the Western Palearctic has been recognized as the primary threat to the long-term survival of the species. Therefore, monitoring the extent of hybridization between the two species is of great importance. Here, we describe 548 new SNP markers, including 292 SNPs to study genetic diversity within the ruddy duck and 161 SNPs to detect hybridization events. These markers were tested on a dataset of 198 samples collected in France and identified as ruddy ducks, and enabled the detection of one hybrid. These new markers also include 95 SNPs to study the genetic diversity within the white-headed duck, which should be validated on a higher number of samples.