Pollen nutrition fosters honeybee tolerance to pesticides

Royal Society Open Science, Journal Year: 2021, Volume and Issue: 8(9), P. 210818 - 210818

Published: Sept. 1, 2021

A reduction in floral resource abundance and diversity is generally observed agro-ecosystems, along with widespread exposure to pesticides. Therefore, a better understanding on how the availability quality of pollen diets can modulate honeybee sensitivity pesticides required. For that purpose, we evaluated toxicity acute chronic exposures field realistic higher concentrations azoxystrobin (fungicide) sulfoxaflor (insecticide) honeybees provided differing qualities (named S BQ pollens). We found intake reduced doses Contrary azoxystrobin, increased by 1.5- 12-fold bee mortality, which was intake. Most importantly, risk death upon high concentration significantly lower for diet when compared diet. This pesticide associated gene expression vitellogenin, glycoprotein promotes longevity, faster metabolization phytochemical p -coumaric acid, known upregulate detoxification enzymes. Thus, our study revealed influence ability bees metabolize withstand their detrimental effects, providing another strong argument restoration suitable foraging habitat.

Language: Английский

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Mixture toxicities of tetrachlorantraniliprole and tebuconazole to honey bees (Apis mellifera L.) and the potential mechanism

Environment International, Journal Year: 2023, Volume and Issue: 172, P. 107764 - 107764

Published: Jan. 18, 2023

The extensive use of pesticides has negative effects on the health insect pollinators. Although pollinators in field are seldom exposed to individual pesticides, few reports have assessed toxic impacts pesticide combinations them. In this work, we purposed reveal combined tetrachlorantraniliprole (TET) and tebuconazole (TEB) honey bees (Apis mellifera L.). Our data exhibited that TET had greater toxicity A. (96-h LC50 value 298.2 mg a.i. L-1) than TEB 1,841 L-1). mixture displayed acute synergistic Meanwhile, activities CarE, CYP450, trypsin, sucrase, as well expressions five genes (ppo, abaecin, cat, CYP4G11, CYP6AS14) associated with immune response, oxidative stress, detoxification metabolism, were conspicuously altered when relative exposures. These results provided an overall comprehension upon challenge sublethal between neonicotinoid insecticides triazole fungicides could be used assess intricate mechanisms mixtures. Additionally, these might guide regulation strategies enhance bee populations.

Language: Английский

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The molecular determinants of pesticide sensitivity in bee pollinators

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 915, P. 170174 - 170174

Published: Jan. 19, 2024

Bees carry out vital ecosystem services by pollinating both wild and economically important crop plants. However, while performing this function, bee pollinators may encounter potentially harmful xenobiotics in the environment such as pesticides (fungicides, herbicides insecticides). Understanding key factors that influence toxicological outcomes of exposure to these chemicals, isolation or combination, is essential safeguard their health they provide. In regard, recent work using toxicogenomic phylogenetic approaches has begun identify, at molecular level, determinants pesticide sensitivity pollinators. These include detoxification systems convert less toxic forms residues insecticide target-sites underlie species-specific selectivity. Here we review emerging body research summarise state knowledge We identify gaps our for future examine how an understanding genetic basis can be leveraged to, a) predict avoid negative bee-pesticide interactions facilitate development pest-selective bee-safe insecticides, b) inform traditional effect assessment risk address issues ecotoxicological concern.

Language: Английский

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Flowering resources modulate the sensitivity of bumblebees to a common fungicide

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 829, P. 154450 - 154450

Published: March 9, 2022

Bees are exposed to various stressors, including pesticides and lack of flowering resources. Despite potential interactions between these the impacts on bees generally assumed be consistent across bee-attractive crops, regulatory risk assessments neglect with Furthermore, fungicides rarely examined in peer-reviewed studies, although often that most to. In a full-factorial semi-field experiment 39 large flight cages, we assessed single combined globally used azoxystrobin-based fungicide Amistar® three types resources (Phacelia, buckwheat, floral mix) Bombus terrestris colonies. Although Amistar is classified as bee-safe, exposure through Phacelia monocultures reduced adult worker body mass colony growth (including 55% decline workers an 88% males), while had no impact colonies buckwheat or mix cages. hampered survival fecundity irrespective exposure. This shows bumblebees require access complementary species gain both fitness tolerance resource-dependent. Our findings call for further research how different plants affect their pesticide improve guidelines inform choice cultivated safeguard pollinators.

Language: Английский

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Mixture toxic effects of thiacloprid and cyproconazole on honey bees (Apis mellifera L.)

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 870, P. 161700 - 161700

Published: Jan. 20, 2023

Language: Английский

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High nutritional status promotes vitality of honey bees and mitigates negative effects of pesticides

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 806, P. 151280 - 151280

Published: Oct. 28, 2021

Honey bee health is affected by multiple stressors, such as the exposure to plant protection products (PPPs), dietary limitation, monofloral diets and pressure of diseases pathogens their interactions. Here, we analysed interacting effects low nutritional pollen source on honey under semi-field conditions. We established a healthy colony in each 24 tents, planted either with maize, maize diverse flower strip or Phacelia tanacetifolia. To evaluate interaction between PPPs status, mixture insecticide thiacloprid fungicide prochloraz was applied. For colony, investigated brood capping rate well adult longevity, body head weight, enzyme activity acetylcholinesterase P450 reductase newly hatched worker bees. found significant reduced treated compared flowering strips Phacelia, but no effect pesticide treatment status rate. The response longevity adults differed significantly being intermediate, indicating PPP quality treatments. Head weight bees showed PPPs. slightly increased all statuses, except for Phacelia. Enzyme different responses exposure, not strip. Our results support hypothesis that higher promotes development larvae pupae, detoxification

Language: Английский

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Stereoselective toxicity mechanism of neonicotinoid dinotefuran in honeybees: New perspective from a spatial metabolomics study

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 809, P. 151116 - 151116

Published: Oct. 21, 2021

Language: Английский

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Spatio-temporal variation in pollen collected by honey bees (Apis mellifera) in rural-urban mosaic landscapes in Northern Europe

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(2), P. e0309190 - e0309190

Published: Feb. 4, 2025

Pollen is a source of protein, lipids, vitamins and minerals for bees other flower-visiting insects. The composition macro- micronutrients pollen vary among different plant species. Honey are long-distance foragers, collecting nectar from plants within several kilometers their hive. Availability the foraging range honey highly dynamic, changing seasonally, across landscapes. In present study, aim was to investigate collected by in rural-urban landscape mosaics typical Northern Europe. Samples corbiculate were 3–9 times during growing season citizen scientist bee keepers total 25 observation apiaries Denmark 2014–2015. Palynological analysis conducted identifying 500 grains per sample type (mostly genus). diversity denoted number types sample, while relative abundance calculated as proportional representation type, if found >1% sample. quantity study years sites measured occurrence each (number samples with present) (total grains). variable, effects season, year, area green urban spaces. terms quantity, few key occurred repeatedly abundantly samples. Only 17 >15 These consistent may impact colony health, hence decisions bees, especially late summer. However, bulk colonies came limited sources, regardless year context Denmark.

Language: Английский

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Early life imidacloprid and copper exposure affects the gut microbiome, metabolism, and learning ability of honey bees (Apis mellifera).

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121134 - 121134

Published: Feb. 1, 2025

Language: Английский

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Protective effects of resveratrol on honeybee health: Mitigating pesticide-induced oxidative stress and enhancing detoxification

Pesticide Biochemistry and Physiology, Journal Year: 2025, Volume and Issue: unknown, P. 106403 - 106403

Published: April 1, 2025

Language: Английский

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