Bees as environmental and toxicological bioindicators in the light of pesticide non-targeted exposure

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 964, P. 178639 - 178639

Published: Jan. 25, 2025

Language: Английский

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A critical review on the accumulation of neonicotinoid insecticides in pollen and nectar: Influencing factors and implications for pollinator exposure

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 899, P. 165670 - 165670

Published: July 19, 2023

Language: Английский

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Transfer and bioaccumulation of pesticides in terrestrial arthropods and food webs: State of knowledge and perspectives for research

Chemosphere, Journal Year: 2024, Volume and Issue: 357, P. 142036 - 142036

Published: April 12, 2024

Arthropods represent an entry point for pesticide transfers in terrestrial food webs, and accumulation upper chain organisms, such as predators can have cascading consequences on ecosystems. However, the mechanisms driving transfer bioaccumulation webs remain poorly understood. Here we review literature mediated by arthropods webs. The of pesticides their potential biomagnification are related to chemical properties toxicokinetic substances, resistance detoxification abilities contaminated well effects organisms' life history traits. We further identify four critical areas which knowledge gain would improve future predictions impacts First, efforts should be made regarding co-formulants mixtures that currently understudied. Second, progress sensitivity analytical methods allow detection low concentrations small individual arthropods. Quantifying preys, predators, or vertebrates at higher trophic level bring crucial insights into real-world Finally, quantifying influence structure complexity communities could address several important sources variability across species This narrative will inspire studies aiming quantify better capture ecological natural cultivated landscapes.

Language: Английский

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Acute toxicity effects of pesticides on beneficial organisms – Dispelling myths for a more sustainable use of chemicals in agricultural environments

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 930, P. 172521 - 172521

Published: April 17, 2024

Agricultural practitioners, researchers and policymakers are increasingly advocating for integrated pest management (IPM) to reduce pesticide use while preserving crop productivity profitability. Using selective pesticides, putatively designed act on pests minimising impacts off-target organisms, is one such option – yet evidence of whether these chemicals control without adversely affecting natural enemies other beneficial species (henceforth beneficials) remains scarce. At present, the selection pesticides compatible with IPM often considers a single (or limited number of) widely distributed species, considering undesired effects co-occurring beneficials. In this study, we conducted standardised laboratory bioassays assess acute toxicity 20 15 at multiple exposure timepoints, specific aims to: (1) identify common diverging patterns in responses tested beneficials; (2) determine if effect beetles, wasps mites consistent across within groups; (3) impact mortality assessment timepoints International Organisation Biological Control (IOBC) classifications. Our work demonstrates that most cases, chemical toxicities cannot be generalised range insects providing biological control, finding was found even when comparing among closely related mites. Additionally, show increase length, pointing limitations IOBC protocols. This challenges notion can adequately 'representative' species; instead, it highlights need careful consideration testing regionally seasonally relevant species.

Language: Английский

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Acute and chronic pesticide exposure trigger fundamentally different molecular responses in bumble bee brains

BMC Biology, Journal Year: 2025, Volume and Issue: 23(1)

Published: March 11, 2025

Abstract Background Beneficial insects, including pollinators, encounter various pesticide exposure conditions, from brief high-concentration acute to continuous low-level chronic exposure. To effectively assess the environmental risks of pesticides, it is critical understand how different schemes influence their effects. Unfortunately, this knowledge remains limited. clarify whether disrupt physiology pollinators in a similar manner, we exposed bumble bees or treatments three pesticides: acetamiprid, clothianidin, sulfoxaflor. Genome-wide gene expression profiling enabled us compare effects these on brain high-resolution manner. Results There were two main findings: First, and largely affected non-overlapping sets genes. Second, pesticides under same scheme showed more comparable than schemes. Each induced distinct profile. Acute mainly caused upregulation genes linked stress response mechanisms, like peroxidase detoxification genes, while predominantly immunity energy metabolism. Conclusions Our findings show that mode determining molecular pesticides. These results signal need for safety testing practices better consider mode-of-exposure dependent suggest transcriptomics can support such improvements.

Language: Английский

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Honey bee immune response to trace concentrations of clothianidin goes beyond the macronutrients found in artificial diets

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 28, 2025

Honey bees (Apis mellifera) often encounter a variety of stressors in their environment, including poor nutrition and pesticides. These interact can be exacerbated large-scale agroecosystems. We investigated how diets varying macronutrient ratios affect nurse bee susceptibility to pesticide stressors. Nurse were fed trace concentrations clothianidin (CLO), neonicotinoid insecticide known have sublethal lethal effects on honey bees, after newly emerged given proteins lipids, natural pollen diet, or sucrose solution diet. Bees had improved longevity, physiology, enzyme activity, gene expression related detoxification. The artificial helped improve health physiology but did little promote detoxification enzymes genes. There was no effect the CLO treatments its own, there an interactive between our higher treatment longevity vitellogenin expression. Our results suggest that (1) exposure even with undermine adult (2) macronutrients help other nutrients pollen, such as potentially phytochemicals, are more directly linked tolerance stress.

Language: Английский

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Honey bees and bumble bees may be exposed to pesticides differently when foraging on agricultural areas

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 896, P. 166214 - 166214

Published: Aug. 10, 2023

In an agricultural environment, where crops are treated with pesticides, bees likely to be exposed a range of chemical compounds in variety ways. The extent which different bee species affected by these chemicals, largely depends on the concentrations and type exposure. We quantified presence selected pesticide pollen two entomophilous crops; oilseed rape (Brassica napus) broad bean (Vicia faba). Sampling was performed 12 sites Ireland our results were compared loads honey bumble actively foraging those same sites. Detections compound specific, timing application relation sampling influenced final residue contamination levels. Most detections originated from that not recently applied fields, samples B. napus fields more contaminated V. faba fields. Crop only fungicides, contained mainly while insecticides detected loads. highest number most observed loads, notably, all five neonicotinoids assessed (acetamiprid, clothianidin, imidacloprid, thiacloprid, thiamethoxam) despite no recent collected. neonicotinoid positively correlated wild plant present bee-collected samples, but this relationship could verified for bees. azoxystrobin, boscalid thiamethoxam formed common combination pollen. Our raise concerns about potential long-term exposure multiple residues question whether suitable surrogates risk assessments species.

Language: Английский

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Identifying pesticides of high concern for ecosystem, plant, animal, and human health: A comprehensive field study across Europe and Argentina

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 948, P. 174671 - 174671

Published: July 14, 2024

The widespread and excessive use of pesticides in modern agricultural practices has caused pesticide contamination the environment, animals, humans, with confirmed serious health consequences. This study aimed to identify 20 most critical substances based on an analysis detection frequency (DF) median concentrations (MC) across environmental biological matrices. A sampling campaign was conducted 10 case sites Europe 1 Argentina, each encompassing conventional organic farming systems. We analysed 209 active a total 4609 samples. All ranked among were detected silicon wristbands worn by humans animals indoor dust from both Five them all Overall, higher values DF MC, including blood plasma recorded samples compared farms. differences between systems greater less animal human Ten farms eight Two those, systems, are classified as hazardous for mammals (acute). seven (dietary). Three carcinogens. Seven endocrine disruptors. Six substances, which five plasma, reproduction/development. Efforts needed elucidate unknown effects mixtures, it is crucial that such research also considers biocides banned constitute baseline adds effect used agriculture.

Language: Английский

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Method optimisation for large scope pesticide multiresidue analysis in bee pollen: A pilot monitoring study

Food Chemistry, Journal Year: 2023, Volume and Issue: 436, P. 137652 - 137652

Published: Oct. 4, 2023

Pesticide contamination in emerging foods and supplements is currently a topic of great interest. This study focused on the evaluation pesticide residues commercial bee pollen samples to evaluate risk associated with their consumption. To this end, an automated clean-up method for extracts was developed. An LC-MS/MS GC-MS/MS were validated analysis 353 pesticides 80 purchased from different countries. The results showed presence 77 pollen, including plant protection chemicals veterinary treatments. 85 % contaminated no relevant differences found between conventional organic samples. concentrations exceeding imposed MRL 40 samples, but assessment that consumers are not exposed unacceptable when consuming evaluated pollen.

Language: Английский

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Tetraarylimidazole-based fluorescence sensor for halosulfuron-methyl

Dyes and Pigments, Journal Year: 2023, Volume and Issue: 222, P. 111860 - 111860

Published: Dec. 2, 2023

Language: Английский

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