Impact of landscape composition on honey bee pollen contamination by pesticides: A multi-residue analysis

Chemosphere, Год журнала: 2023, Номер 349, С. 140829 - 140829

Опубликована: Ноя. 30, 2023

The honey bee is the most common and important managed pollinator of crops. In recent years, colonies faced high mortality for multiple causes, including land-use change use plant protection products (hereafter pesticides). This work aimed to explore how contamination by pesticides pollen collected bees was modulated landscape composition seasonality. We placed two in 13 locations Northern Italy contrasting landscapes, from which we samples monthly during whole flowering season 2019 2020. searched almost 400 compounds, fungicides, herbicides, insecticides, acaricides. then calculated each sample Pollen Hazard Quotient (PHQ), an index that provides a measure multi-residue toxicity contaminated pollen. Almost all were at least one compound. detected 97 mainly but insecticides acaricides showed highest toxicity. Fifteen % had medium-high or levels PHQ, could pose serious threats bees. Fungicides nearly constant PHQ throughout season, while herbicides higher values spring early summer. Also, increased with increasing cover agricultural urban areas April July, it low independent end season. perennial crops, i.e., fruit trees vineyards, not annual samples. Our highlighted potential complex interactions among pesticide category, seasonality, composition. Due large number compounds detected, our study should be complemented additional experimental research on interactive effects health.

Язык: Английский

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Exposure to a fungicide for a field-realistic duration does not alter bumble bee fecal microbiota structure

Applied and Environmental Microbiology, Год журнала: 2024, Номер 90(2)

Опубликована: Янв. 19, 2024

Social bees are frequently exposed to pesticides when foraging on nectar and pollen. Recent research has shown that pesticide exposure not only impacts social bee host health but can also alter the community structure of gut microbiotas. However, most pesticide-bee microbiota interactions been conducted in honey bees; bumble bees, native North American pollinators, have received less attention and, due differences their ecology, may be certain for shorter durations than bees. Here, we examine how fungicide chlorothalonil a short, field-realistic duration alters fecal microbiotas (used as proxy microbiotas) performance. We expose small groups

Язык: Английский

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Toxic effects of acaricide fenazaquin on development, hemolymph metabolome, and gut microbiome of honeybee (Apis mellifera) larvae

Chemosphere, Год журнала: 2024, Номер 358, С. 142207 - 142207

Опубликована: Апрель 30, 2024

Язык: Английский

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Temporospatial dynamics and host specificity of honeybee gut bacteria

Cell Reports, Год журнала: 2024, Номер 43(7), С. 114408 - 114408

Опубликована: Июнь 26, 2024

Honeybees are important pollinators worldwide, with their gut microbiota playing a crucial role in maintaining health. The bacteria of honeybees consist primarily five core lineages that spread through social interactions. Previous studies have provided basic understanding the composition and function honeybee microbiota, recent advancements focusing on analyzing diversity at strain level changes bacterial functional genes. Research across different regions globally has insights into microbial ecology. Additionally, findings shed light mechanisms host specificity bacteria. This review explores temporospatial dynamics discussing reasons behind these fluctuations. synopsis provides host-microbe interactions is invaluable for

Язык: Английский

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Toxicity responses of different bee species to flupyradifurone and sulfoxaflor insecticides reveal species and sex-based variations

The Science of The Total Environment, Год журнала: 2025, Номер 964, С. 178264 - 178264

Опубликована: Янв. 23, 2025

Язык: Английский

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