LoCascio George M, Aguirre Luis, Irwin Rebecca E, Adler Lynn S
Department of Environmental Conservation, University of Massachusetts, Amherst, MA 01003, USA.
Department of Biology, University of Massachusetts, Amherst, MA 01003, USA.
R Soc Open Sci. 2019 Apr 3;6(4):190279. doi: 10.1098/rsos.190279. eCollection 2019 Apr.
Pathogens are one of the factors driving pollinator declines. Diet can play an important role in mediating pollinator health and resistance to pathogens. Sunflower pollen () dramatically reduced a gut pathogen () of previously, but the breadth of this effect was unknown. We tested whether pollen from nine cultivars, four wild populations, and two spp., reduced in compared to mixed wildflower pollen and buckwheat pollen () as controls. We also compared hand- and honeybee-collected pollen (which contains nectar) to assess whether diet effects on pathogens were due to pollen or nectar. All and pollen reduced by 20-40-fold compared to buckwheat pollen, and all but three taxa reduced compared to wildflower pollen. We found no consistent differences between hand- and bee-collected pollen, suggesting that pollen alone can reduce infection. Our results indicate an important role of pollen diet for bee health and potentially broad options within the Asteraceae for pollinator plantings to manage bee disease.
病原体是导致传粉者数量下降的因素之一。饮食在调节传粉者健康和对病原体的抵抗力方面可以发挥重要作用。向日葵花粉（）此前显著降低了（）的一种肠道病原体，但这种作用的广度尚不清楚。我们测试了来自9个栽培品种、4个野生种群和2个物种的花粉与作为对照的混合野花花粉和荞麦花粉（）相比，是否能降低（）。我们还比较了人工采集的花粉和蜜蜂采集的花粉（含有花蜜），以评估饮食对病原体的影响是由于花粉还是花蜜。与荞麦花粉相比，所有和花粉使（）减少了20至40倍，与野花花粉相比，除了三个分类群外，所有分类群的（）都有所减少。我们发现人工采集的花粉和蜜蜂采集的花粉之间没有一致的差异，这表明仅花粉就能减少（）感染。我们的结果表明花粉饮食对蜜蜂健康具有重要作用，并且在菊科植物中可能有广泛的选择用于传粉者种植以管理蜜蜂疾病。
