Metal pollutants have additive negative effects on honey bee cognition

Monchanin, Coline; Drujont, Erwann; Devaud, Jean-Marc; Lihoreau, Mathieu; Barron, Andrew B.

doi:10.1242/jeb.241869

Cited by 39 publications

(19 citation statements)

References 77 publications

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“…High metal concentrations in food negatively impact individual bees (e.g. health, cognition and foraging behaviour) [12,[64][65][66][67], eventually inducing cumulative effects on the colony [39].…”

Section: Introductionmentioning

confidence: 99%

Behavioural regulation of mineral salt intake in honeybees: a self-selection approach

Sousa

Darnell

Wright

2022

Phil. Trans. R. Soc. B

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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, CaCl 2 , MgCl 2 ) or metals (FeCl 3 , CuCl 2 , ZnCl 2 , MnCl 2 ) 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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Section: Introductionmentioning

confidence: 99%

Behavioural regulation of mineral salt intake in honeybees: a self-selection approach

Sousa

Darnell

Wright

2022

Phil. Trans. R. Soc. B

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“…can contribute to neurodegeneration, if they are outside their biologic range (Chicas-Mosier et al, 2017). In addition, combined eff ects of co-exposure to diff erent metals can also occur (Monchanin et al, 2021). Th e non-essential elements (lead, cadmium, mercury) can be toxic even in a trace amount.…”

Section: Toksični Elementi -Faktor Rizika Za Preživljavanje Medonosni...mentioning

confidence: 99%

“…In natural feeding areas, most of Pb is found on the surface of bee bodies (Sadowska et al, 2019). Pb negatively aff ects bees' immune system -it slows down appetitive learning and reduces long-term memory specifi city (Monchanin et al, 2021).…”

Section: Toxic Elements -Exposure and Toxicity For Honey Beementioning

confidence: 99%

“…Di et al, 2016, Formicki et al (2013 showed in their study that Cd accumulates the most in beeswax, while Pb content was high in both wax and honey. Exposure of honey bees to As, Cu or Pb reduces learning and memory performances (Monchanin et al, 2021). Larvae are much more sensitive to the sublethal and lethal concentrations of metals than adult bees, and they exhibit signifi cantly increased mortality (Burden et al, 2019).…”

Section: Toxic Elements -Exposure and Toxicity For Honey Beementioning

confidence: 99%

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TOXIC ELEMENTS AS A RISK FACTOR FOR THE SURVIVAL OF THE HONEY BEES (Apis mellifera L.)

Baloš

Mihaljev²,

Jakšić³

2021

AVM

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Toxic element pollution is an ecological concern in the regions where mining, industry and agriculture are developing. Anthropogenic impact on the environment results in the reduction of the population of honey bees over the world with varying degrees of morbidity and mortality. Bees exposed to contaminants produce polluted products through various sources, including foraging activities on contaminated plants. Therefore, monitoring of honey bee products in terms of toxic elements is very important for food safety and for preventing potential future ecological problems. The data presented in this review are useful for bee health protection and improving the quality and safety of honey production chain.

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“…Thus, it is not surprising that increasing efforts are being made to fi nd out all putative factors contributing to the decrease in bee populations [2,3]. Environmental pollutants such as agrochemicals [4][5][6] and heavy metals [7,8], together with pathogens [9,10], inadequate fl oral resources [11,12] and incorrect beekeeping practices [2] have been accused of having contributed to the decline in the number of bees. Among pathogens, there are endoparasites capable of compromising bee health and contribute to colony mortality, like microsporidia [13][14][15][16][17] and trypanosomatids [18][19][20], but also viruses [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Diet Supplementation Helps Honey Bee Colonies in Combat Infections by Enhancing their Hygienic Behaviour

et al. 2022

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The hygienic behavior in honey bees is a complex polygenic trait that serves as a natural defense mechanism against bacterial and fungal brood diseases and Varroa destructor mites infesting brood cells. The aim of this study was to evaluate the effect of a dietary amino acids and vitamins supplement “BEEWELL AminoPlus” on hygienic behavior of Apis mellifera colonies combating microsporidial and viral infections. The experiment was performed during a one-year period on 40 colonies alloted to five groups: one supplemented and infected with Nosema ceranae and four viruses (Deformed wing virus - DWV, Acute bee paralysis virus - ABPV, Chronic bee paralysis virus - CBPV and Sacbrood virus – SBV), three not supplemented, but infected with N. ceranae and/ or viruses, and one negative control group. Beside the l isted pathogens, honey bee trypanosomatids were also monitored in all groups. The supplement “BEEWELL AminoPlus” induced a significant and consistent increase of the hygienic behavior in spite of the negative effects of N. ceranae and viral infections. N. ceranae and viruses significantly and consistently decreased hygienic behavior, but also threatened the survival of bee colonies. The tested supplement showed anti-Nosema effect, since the N. ceranae infection level significantly and consistently declined only in the supplemented group. Among infected groups, only the supplemented one remained Lotmaria passim-free throughout the study. In conclusion, diet supplementation enhances hygienic behavior of honey bee colonies and helps them fight the most common infections of honey bees.

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Metal pollutants have additive negative effects on honey bee cognition

Cited by 39 publications

References 77 publications

Behavioural regulation of mineral salt intake in honeybees: a self-selection approach

Behavioural regulation of mineral salt intake in honeybees: a self-selection approach

TOXIC ELEMENTS AS A RISK FACTOR FOR THE SURVIVAL OF THE HONEY BEES (Apis mellifera L.)

Diet Supplementation Helps Honey Bee Colonies in Combat Infections by Enhancing their Hygienic Behaviour

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