<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Regis Lefebre</style></author><author><style face="normal" font="default" size="100%">Lina De Smet</style></author><author><style face="normal" font="default" size="100%">Anja Tehel</style></author><author><style face="normal" font="default" size="100%">Robert J Paxton</style></author><author><style face="normal" font="default" size="100%">Emma Bossuyt</style></author><author><style face="normal" font="default" size="100%">Wim Verbeke</style></author><author><style face="normal" font="default" size="100%">Coby van Dooremalen</style></author><author><style face="normal" font="default" size="100%">Zeynep N Ulgezen</style></author><author><style face="normal" font="default" size="100%">Trudy van den Bosch</style></author><author><style face="normal" font="default" size="100%">Famke Schaafsma</style></author><author><style face="normal" font="default" size="100%">Dirk-Jan Valkenburg</style></author><author><style face="normal" font="default" size="100%">Dall'Olio, Raffaele</style></author><author><style face="normal" font="default" size="100%">Cedric Alaux</style></author><author><style face="normal" font="default" size="100%">Daniel S Dezmirean</style></author><author><style face="normal" font="default" size="100%">Giurgiu I Alexandru</style></author><author><style face="normal" font="default" size="100%">Nuno Capela</style></author><author><style face="normal" font="default" size="100%">Sandra Simões</style></author><author><style face="normal" font="default" size="100%">José Paulo Sousa</style></author><author><style face="normal" font="default" size="100%">Martin Bencsik</style></author><author><style face="normal" font="default" size="100%">Adam McVeigh</style></author><author><style face="normal" font="default" size="100%">Michael Thomas Ramsey</style></author><author><style face="normal" font="default" size="100%">Sausan Ahmad</style></author><author><style face="normal" font="default" size="100%">Kumar, Tarun</style></author><author><style face="normal" font="default" size="100%">Marc O Schäfer</style></author><author><style face="normal" font="default" size="100%">Alexis L Beaurepaire</style></author><author><style face="normal" font="default" size="100%">Moro, Arrigo</style></author><author><style face="normal" font="default" size="100%">Claude J Flener</style></author><author><style face="normal" font="default" size="100%">Severine Matthijs</style></author><author><style face="normal" font="default" size="100%">De Graaf, Dirk C</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Allele Frequencies of Genetic Variants Associated with Varroa Drone Brood Resistance (DBR) in Apis mellifera Subspecies across the European Continent.</style></title><secondary-title><style face="normal" font="default" size="100%">Insects</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">western honey bee; marker-assisted selection; genetic markers; suppressed mite reproduction; varroa mite non-reproduction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2024</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2024 Jun 04</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">15</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Implementation of marker-assisted selection (MAS) in modern beekeeping would improve sustainability, especially in breeding programs aiming for resilience against the parasitic mite . Selecting honey bee colonies for natural resistance traits, such as brood-intrinsic suppression of varroa mite reproduction, reduces the use of chemical acaricides while respecting local adaptation. In 2019, eight genomic variants associated with varroa non-reproduction in drone brood were discovered in a single colony from the Amsterdam Water Dune population in the Netherlands. Recently, a new study tested the applicability of these eight genetic variants for the same phenotype on a population-wide scale in Flanders, Belgium. As the properties of some variants varied between the two studies, one hypothesized that the difference in genetic ancestry of the sampled colonies may underly these contribution shifts. In order to frame this, we determined the allele frequencies of the eight genetic variants in more than 360 colonies across the European continent and found that variant type allele frequencies of these variants are primarily related to the subspecies or phylogenetic honey bee lineage. Our results confirm that population-specific genetic markers should always be evaluated in a new population prior to using them in MAS programs.&lt;/p&gt;
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