Beekeepers have various options to control the parasitic mite Varroa destructor in honey bee colonies, but no empirical data are available on the methods they apply in practice. We surveyed 28,409 beekeepers maintaining 507,641 colonies in 30 European countries concerning Varroa control methods. The set of 19 different Varroa diagnosis and control measures was taken from the annual COLOSS questionnaire on honey bee colony losses. The most frequent activities were monitoring of Varroa infestations, drone brood removal, various oxalic acid applications and formic acid applications. Correspondence analysis and hierarchical clustering on principal components showed that six Varroa control options (not necessarily the most used ones) significantly contribute to defining three distinctive clusters of countries in terms of Varroa control in Europe. Cluster I (eight Western European countries) is characterized by use of amitraz strips. Cluster II comprises 15 countries from Scandinavia, the Baltics, and Central-Southern Europe. This cluster is characterized by long-term formic acid treatments. Cluster III is characterized by dominant usage of amitraz fumigation and formed by seven Eastern European countries. The median number of different treatments applied per beekeeper was lowest in cluster III. Based on estimation of colony numbers in included countries, we extrapolated the proportions of colonies treated with different methods in Europe. This suggests that circa 62% of colonies in Europe are treated with amitraz, followed by oxalic acid for the next largest percentage of colonies. We discuss possible factors determining the choice of Varroa control measures in the different clusters.

养蜂人有多种选择来控制蜜蜂群落中的寄生螨Varroa destructor ，但没有关于他们在实践中应用的方法的经验数据。我们调查了 30 个欧洲国家的 28,409 名养蜂人，他们维护 507,641 个蜂群，了解瓦螨控制方法。这组 19 种不同的Varroa诊断和控制措施取自关于蜜蜂群体损失的年度 COLOSS 问卷。最常见的活动是监测Varroa侵扰、无人机育雏清除、各种草酸应用和甲酸应用。对主成分的对应分析和层次聚类表明，六个Varroa控制选项（不一定是最常用的选项）显着有助于根据Varroa定义三个不同的国家集群控制在欧洲。集群 I（八个西欧国家）的特点是使用双甲脒条。第二组包括来自斯堪的纳维亚、波罗的海和中南欧的 15 个国家。该集群的特点是长期甲酸处理。集群 III 的特点是主要使用双甲脒熏蒸，由七个东欧国家组成。在集群 III 中，每个养蜂人应用的不同处理的中位数最低。基于对纳入国家菌落数量的估计，我们推断了欧洲用不同方法处理的菌落比例。这表明欧洲大约 62% 的菌落用双甲脒处理，其次是草酸，这是第二大比例的菌落。我们讨论了决定选择Varroa的可能因素不同集群的控制措施。