Honey bees (Apis mellifera spp.) respond to increased aluminum exposure in their foraging choice, motility, and circadian rhythmicity
Honey bees (Apis mellifera spp.) respond to increased aluminum exposure in their foraging choice, motility, and circadian rhythmicity
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DOI：
10.1371/journal.pone.0218365
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发表时间：
2019-06-27
期刊：
影响因子：
3.7
通讯作者：
Abramson, Charles I.
中科院分区：
文献类型：
--
作者：
Chicas-Mosier, Ana M.;Dinges, Christopher W.;Abramson, Charles I.
铝在全球范围内的生物利用度越来越高，工业排放和采矿实践不良导致酸化。这种生物利用度增加了植物群的吸收，污染了水果、花粉和花蜜等产品。据报道，在北美，水果和花粉中铝的浓度在0.05 - 670 mg/L之间。这对于摄取花粉和花蜜的传粉者来说尤其重要。蜜蜂是全球存在的物种，在欧洲和北美正在经历衰退。区域特异性下降可能是亚种之间接触的不同毒性的结果。我们发现，欧洲蜜蜂（意大利蜜蜂）可能有不同的毒性相比，两个异地地中海亚种（意大利蜜蜂carnica和意大利蜜蜂caucasica），没有表现出亚种内的暴露差异。然后，欧洲蜜蜂被用于实验室实验，并暴露于日常供水中的铝，以模拟几种浓度的花蜜污染。在低浓度（10.4mg/L）的铝胁迫下，蜜蜂的圈养寿命明显短于对照，并表现出可能的运动性兴奋反应。我们还比较了欧洲蜜蜂非洲化/欧洲杂交蜜蜂（意大利蜜蜂/小盾蜂杂交）在短期自由飞行实验。无论是欧洲蜜蜂，也没有杂交表现出立即觅食赤字的飞行时间，颜色的选择，或花卉操纵铝曝光后。我们的结论是，欧洲蜜蜂是最大的风险铝相关的下降，从慢性摄入相比，其他亚种，并提供新的方法，为未来使用的蜜蜂毒理学。
Aluminum is increasingly globally bioavailable with acidification from industrial emissions and poor mining practices. This bioavailability increases uptake by flora, contaminating products such as fruit, pollen, and nectar. Concentrations of aluminum in fruit and pollen have been reported between 0.05 and 670mg/L in North America. This is particularly concerning for pollinators that ingest pollen and nectar. Honey bees represent a globally present species experiencing decline in Europe and North America. Region specific decline may be a result of differential toxicity of exposure between subspecies. We find that European honey bees (Apis mellifera mellifera) may have differential toxicity as compared to two allopatric Mediterranean subspecies (Apis mellifera carnica and Apis mellifera caucasica) which showed no within subspecies exposure differences. European honey bees were then used in a laboratory experiment and exposed to aluminum in their daily water supply to mimic nectar contamination at several concentrations. After approximately 3 weeks of aluminum ingestion these bees showed significantly shorter captive longevity than controls at concentrations as low as 10.4mg/L and showed a possible hormetic response in motility. We also compared European honey bees to Africanized/European hybrid bees (Apis mellifera mellifera/scutellata hybrid) in short-term free-flight experiments. Neither the European honey bee nor the hybrid showed immediate foraging deficits in flight time, color choice, or floral manipulation after aluminum exposure. We conclude that European honey bees are at the greatest risk of aluminum related decline from chronic ingestion as compared to other subspecies and offer new methods for future use in honey bee toxicology.