Behavioural regulation of mineral salt intake in honeybees: a self-selection approach.
Behavioural regulation of mineral salt intake in honeybees: a self-selection approach.
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DOI：
10.1098/rstb.2021.0169
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发表时间：
2022-06-20
影响因子：
6.3
通讯作者：
Wright, Geraldine A.
中科院分区：
文献类型：
--
作者：
de Sousa, Raquel T.;Darnell, Robyn;Wright, Geraldine A.
动物需要少量矿物质来维持代谢活动，但矿物质缺乏也会导致代谢瓶颈，矿物质过量会引起毒性。出于这些原因，我们可以合理地预期微量营养素会围绕营养最佳值进行积极调节。蜜蜂与开花植物共同进化，其主要营养来源是花粉和花蜜。与其他昆虫一样，蜜蜂在食物消耗过程中利用摄入前和摄入后机制的组合来平衡多种常量营养素的摄入。他们如何利用这些机制调节微量营养素的摄入量很少被研究。通过二选一喂养试验，我们测试了笼养和不育幼工是否更喜欢含有各种盐（NaCl、KCl、CaCl2、MgCl2）或金属（FeCl3、CuCl2、ZnCl2、MnCl2）的溶液，其浓度依赖性。我们发现，年轻的成年工人只能围绕特定浓度的钠、铁和铜自我选择和优化饮食摄入量。蜜蜂很大程度上避免使用高浓度的矿物溶液，以尽量减少毒性。这些实验证明了蜜蜂微量营养素摄入调节的局限性。这是第一项比较一种生物体对八种不同微量营养素的这种行为形式的研究。本文是主题“影响传粉媒介健康的自然过程：从化学到景观”的一部分。
Minerals are required in small amounts to sustain metabolic activity in animals, but mineral deficiencies can also lead to metabolic bottlenecks and mineral excesses can induce toxicity. For these reasons, we could reasonably expect that micronutrients are actively regulated around nutritional optima. Honeybees have co-evolved with flowering plants such that their main sources of nutrients are floral pollen and nectar. Like other insects, honeybees balance their intake of multiple macronutrients during food consumption using a combination of pre- and post-ingestive mechanisms. How they regulate their intake of micronutrients using these mechanisms has rarely been studied. Using two-choice feeding assays, we tested whether caged and broodless young workers preferred solutions containing individual salts (NaCl, KCl, CaCl2, MgCl2) or metals (FeCl3, CuCl2, ZnCl2, MnCl2) in a concentration-dependent manner. We found that young adult workers could only self-select and optimize their dietary intake around specific concentrations of sodium, iron and copper. Bees largely avoided high concentration mineral solutions to minimize toxicity. These experiments demonstrate the limits of the regulation of intake of micronutrients in honeybees. This is the first study to compare this form of behaviour in one organism for eight different micronutrients. This article is part of the theme issue ‘Natural processes influencing pollinator health: from chemistry to landscapes’.
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