Agricultural Institute of Slovenia, Ljubljana, Slovenia.
Biotechnical Faculty, Ljubljana, Slovenia.
Food Chem. 2020 Nov 15;330:127334. doi: 10.1016/j.foodchem.2020.127334. Epub 2020 Jun 13.
Varroa destructor, the primary honeybee pathogen, is kept in check by various chemical compounds which may enter the human diet through honeybee products. Lithium is an emerging varroa control substance, and we investigated its accumulation in honey, bee bread, brood and adults along with the mortality of bees. Increased lithium concentrations were detected in workers, fed individually once per os with 10 µL of 25 mM LiCl in sucrose solution (6.50-40.10 mg/kg) or had the same solution available ad libitum (39.25-266.00 mg/kg). A three-day treatment of honeybee colonies with 25 mM LiCl in 1L/day sucrose solution increased lithium concentrations in five-day-old larvae, honey, and bee bread: up to 45.0, 1.2, and 47.0 mg/kg, respectively. Lithium concentrations peaked three days post-treatment in both larvae and honey and increased worker mortality was observed. The control colonies exhibited lithium concentrations below the limit of quantification (0.5 mg/kg). Prudence in lithium use is advised.
瓦螨是主要的蜜蜂病原体，受各种化学物质的抑制，这些物质可能通过蜜蜂产品进入人类饮食。锂是一种新兴的瓦螨控制物质，我们研究了它在蜂蜜、蜂粮、幼虫和成虫中的积累情况，以及蜜蜂的死亡率。结果发现，经口单独喂食每只蜜蜂 10 μL 25 mM LiCl 蔗糖溶液（6.50-40.10 mg/kg）或自由摄取相同溶液（39.25-266.00 mg/kg）的工蜂中锂浓度增加。用 1 L/天 25 mM LiCl 的蔗糖溶液对蜜蜂进行三天的处理，会增加 5 日龄幼虫、蜂蜜和蜂粮中的锂浓度：分别高达 45.0、1.2 和 47.0 mg/kg。幼虫和蜂蜜中锂浓度在处理后三天达到峰值，且观察到工蜂死亡率增加。对照组的锂浓度低于定量限（0.5 mg/kg）。建议谨慎使用锂。
