PDF(Pubmed)
Abstract：
Despite the use of various integrated pest management strategies to control the honey bee mite, Varroa destructor, varroosis remains the most important threat to honey bee colony health in many countries. In Canada, ineffective varroa control is linked to high winter colony losses and new treatment options, such as a summer treatment, are greatly needed. In this study, a total of 135 colonies located in 6 apiaries were submitted to one of these 3 varroa treatment strategies: (i) an Apivar® fall treatment followed by an oxalic acid (OA) treatment by dripping method; (ii) same as in (i) with a summer treatment consisting of formic acid (Formic Pro™); and (iii) same as in (i) with a summer treatment consisting of slow-release OA/glycerin pads (total of 27 g of OA/colony). Treatment efficacy and their effects on colony performance, mortality, varroa population, and the abundance of 6 viruses (acute bee paralysis virus [ABPV], black queen cell virus [BQCV], deformed wing virus variant A [DWV-A], deformed wing virus variant B [DWV-B], Israeli acute paralysis virus [IAPV], and Kashmir bee virus [KBV]) were assessed. We show that a strategy with a Formic Pro summer treatment tended to reduce the varroa infestation rate to below the economic fall threshold of 15 daily varroa drop, which reduced colony mortality significantly but did not reduce the prevalence or viral load of the 6 tested viruses at the colony level. A strategy with glycerin/OA pads reduced hive weight gain and the varroa infestation rate, but not below the fall threshold. A high prevalence of DWV-B was measured in all groups, which could be related to colony mortality.
摘要：
尽管使用了各种综合虫害管理策略来控制蜜蜂螨，Varroa析构函数,在许多国家，静脉曲张仍然是对蜜蜂群体健康的最重要威胁。在加拿大,无效的varroa控制与高冬季菌落损失和新的治疗选择有关，比如夏天的治疗，是非常需要的。在这项研究中,共有位于6个蜂巢中的135个菌落接受了以下3种varroa治疗策略之一：（i）Apivar®fall治疗，然后通过滴注法进行草酸（OA）治疗；（ii）与（i）中相同，夏季治疗由甲酸（FormicPro™）组成；（iii）与（i）中相同，夏季治疗由缓慢释放的甘油/OA菌落（总计27g）。治疗效果及其对菌落性能的影响，死亡率,varroa人口，和6种病毒的丰度(急性蜜蜂麻痹病毒[ABPV]，黑色女王细胞病毒[BQCV]，畸形翼病毒变种A[DWV-A]，畸形翼病毒B变种[DWV-B]，以色列急性麻痹病毒[IAPV]，和克什米尔蜜蜂病毒[KBV]）进行了评估。我们表明，采用FormicPro夏季治疗的策略倾向于将varroa侵染率降低到低于15日varroa下降的经济下降阈值，这显著降低了菌落死亡率，但没有降低6种测试病毒在菌落水平的流行率或病毒载量。使用甘油/OA垫的策略减少了蜂巢的体重增加和瓦罗的侵扰率，但不低于下降阈值。在所有组中测量到DWV-B的高患病率，这可能与殖民地死亡率有关。
