变形翼病毒(DWV)是一种由外寄生虫螨瓦螨破坏体传播的蜜蜂致病性病毒。每年越冬菌落损失,约占所有菌落的25%,与高度的Varroa-DWV侵染有关。有效的杀螨剂治疗可用于控制瓦螨属。然而,缺乏协调治疗意味着螨虫的环境传播继续不受控制。我们的目标是确定是否理性,协调治疗是有益的,并将DWV种群描述为殖民地健康的指标。这项研究在地理隔离的环境中使用对瓦螨的协调治疗(阿兰岛,苏格兰)超过3年。研究区域包含约20名业余养蜂人管理的50-84个菌落。在治疗前后进行取样和病毒分析以评估菌株多样性和病毒载量,通过序列分析对种群多样性的变化进行了量化。在对病毒种群的3年分析中,主要的DWV变异体在所有种群中从A型转变为B型,无论螨水平或接近其他殖民地。在此期间,管理的菌落数量增加了47%(57-84个菌落),但尽管如此,我们估计螨虫总数减少了58%。合成与应用。在这项研究中,阿兰的养蜂人大大提高了他们管理的殖民地数量,没有任何蜜蜂进入岛上,表明加强对管理技术的关注,通过协调的杀虫计划和对蜜蜂疾病的更好理解相结合,可以为蜜蜂的健康和可持续性产生积极的结果。
Deformed wing virus (DWV) is a pathogenic virus of honey bees transmitted by the ectoparasitic mite Varroa destructor. Annual overwintering colony losses, accounting for ~25% of all colonies, are associated with high levels of Varroa-DWV infestation. Effective
miticide treatments are available to control Varroa. However, the absence of coordinated treatment means environmental transmission of mites continues unchecked. We aimed to determine whether rational, coordinated treatment is beneficial, and characterized the DWV population as an indicator of colony health.This study uses coordinated treatment of Varroa in a geographically isolated environment (Isle of Arran, Scotland) over 3 years. The study area contained 50-84 colonies managed by ~20 amateur beekeepers. Sampling and virus analysis to assess strain diversity and viral loads were conducted before and after treatments, and changes in population diversity were quantified by sequence analysis.Over the 3 years analysis of the virus population revealed that the dominant DWV variant shifted from Type A to Type B in all apiaries, regardless of mite levels or proximity to other colonies. During this period the number of managed colonies increased by 47% (57-84 colonies), but despite this, we estimate total mite numbers decreased by 58%. Synthesis and applications. In this study, the beekeepers in Arran significantly improved the number of colonies they managed, without importing any bees onto the island, indicating that an improved focus on management techniques, through the combination of a coordinated
miticide programme and an improved understanding of bee diseases, could yield positive results for bee health and sustainability.