研究人员ID Queens，神秘的疾病综合征是蜂殖民死病的关键因素

A new long-term study of honey bee health has found that a little-understood disease study authors are calling “idiopathic brood disease syndrome” (IBDS), which kills off bee larvae, is the largest risk factor for predicting the death of a bee colony.

“Historically, we’ve seen symptoms similar to IBDS associated with viruses spread by large-scale infestations of parasitic mites,” says Dr. David Tarpy, an associate professor of entomology at North Carolina State University and co-author of a paper describing the study. “But now we’re seeing these symptoms – a high percentage of larvae deaths – in colonies that have relatively few of these mites. That suggests that IBDS is present even in colonies with low mite loads, which is not what we expected.” The study was conducted by researchers from NC State, the University of Maryland, Pennsylvania State University and the U.S. Department of Agriculture (USDA).

The study evaluated the health of 80 commercial colonies of honey bees (Apis mellifera.) in the eastern United States on an almost monthly basis over the course of 10 months – which is a full working “season” for commercial bee colonies. The goal of the study was to track changes in bee colony health and, for those colonies that died off, to determine what factors earlier in the year may have contributed to colony death. Fifty-six percent of the colonies died during the study.

“我们发现受IBDS影响的殖民地有3.2的危险因素，”马里兰大学丹尼斯·瓦纳·德兰博士说，这篇论文上的主要作者。这意味着与在研究过程中的其他殖民地死亡的可能性菌落比其他殖民地更容易死亡。

While the study found that IBDS was the greatest risk factor, a close runner-up was the occurrence of a so-called “queen event.”

蜜蜂殖民地只有一个皇后。当一个上校ony perceives something wrong with its queen, the workers eliminate that queen and try to replace her. This process is not always smooth or successful. The occurrence of a queen event had a risk factor of 3.1.

“这是第一次完成流行病学研究，在季节的过程中反复评估同一个商业蜂蜜蜜蜂殖民地的健康状况，”Tarpy说。“它表明，IBD是我们不太理解的重要问题。它还强调，我们需要了解有关导致殖民地拒绝皇后队的原因的更多信息。这些是我们正在积极研究的领域。希望这将使我们洞察其他健康问题，包括殖民地崩溃障碍。“

本文，“Idiopathic brood disease syndrome and queen events as precursors of colony mortality in migratory beekeeping operations in the eastern United States,” is published in the February issue of预防兽医药物。该研究的共同作者包括宾夕法尼亚州邦恩州的尤金莱格尼博士和美国农业部的杰弗德佩蒂斯博士。这项工作得到了美国农业部和国家蜂蜜委员会的支持。

- 船员 -

编辑注：这项研究摘要跟随。

“特发性育龄疾病综合征和女王赛事作为美国东部迁徙养蜂业行动中殖民地死亡的前体”

作者：马里兰大学丹尼斯·瓦伦尔斯多普;北卡罗来纳州州立大学大卫R. Tarpy;宾夕法尼亚州立大学Eugene J. Lengerich;和Jeffery S. Pettis，USDA-ARS BEE研究实验室

发表: February 2013,预防兽医药物

抽象的：本研究采用了标准流行病学方法，规定了量化与暴露在三个迁徙养蜂业务中群落死亡率和发病率的容易诊断因素相关的风险。在10个月期间监测的五十六个占菌落的所有殖民地死亡。殖民地在短期内死亡的相对风险（RR）在被诊断患有特发性育种疾病综合征（IBDS）的菌落中显着增加了一种，这种条件在细胞底部出现熔化的育雏（rr = 3.2），或者用“女王赛事”（例如，替换或失败的证据; RR = 3.1）。我们还发现，几种危险因素 - 包括较差的育雏模式，粉末（Cb），变形翼病毒（DWV），囊状病毒（SBV），并且超过每100蜜饼的5个Varroa螨虫的阈值 - 差异表达在不同的养蜂业务中。此外，我们发现几种因素的诊断显着或多或少可能与另一个危险因素的同时诊断有关。这些发现支持越来越多的共识，即菌落死亡率的原因是多个和相互关联的。