Size-dependent responses of colony-founding bumblebee (Bombus impatiens) queens to exposure to pesticide residues in soil during hibernation

The Science of The Total Environment, Год журнала: 2024, Номер 948, С. 174852 - 174852

Опубликована: Июль 18, 2024

Bumblebees and other key pollinators are experiencing global declines, a phenomenon driven by multiple environmental stressors, including pesticide exposure. While bumblebee queens spend most of their life hibernating underground, no study to date has examined how exposure pesticide-contaminated soils might affect during this solitary phase lifecycle. We exposed Bombus impatiens (n = 303) soil treated with field-realistic concentrations two diamide insecticides (chlorantraniliprole cyantraniliprole) fungicides (boscalid difenoconazole), alone or combined, 30-week hibernation period. found that boscalid residues in doubled the likelihood surviving through colony initiation period (after successful hibernation) laying eggs. Our data also revealed complex interactions between queen body mass on aspects founding. Among others, cyantraniliprole led lethal sublethal post-hibernation effects were dependent size, larger showing higher mortality rates, delayed emergence first brood, producing smaller workers. results show depend intrinsic traits physiology challenge our understanding bees respond pesticides under environmentally realistic scenarios.

Язык: Английский

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Exposure to sublethal levels of insecticide-fungicide mixtures affect reproductive success and population growth rates in the solitary bee Osmia cornuta

Environment International, Год журнала: 2024, Номер 190, С. 108919 - 108919

Опубликована: Июль 30, 2024

In agricultural environments, bees are routinely exposed to combinations of pesticides. For the most part, exposure these pesticide mixtures does not result in acute lethal effects, but we know very little about potential sublethal effects and their consequences on reproductive success population dynamics. this study, orally newly emerged females solitary bee Osmia cornuta environmentally-relevant levels acetamiprid (a cyano-substituted neonicotinoid insecticide) singly combination with tebuconazole sterol-biosynthesis inhibitor (SBI) fungicide). The amount feeding solution consumed during phase was lowest mixture. Following exposure, were individually marked released into oilseed rape field cages monitor nesting performance assess success. fungicide or insecticide alone similar those control resulted a 1.3-1.7 net increases. By contrast, mixture showed lower establishment, shortened period, reduced fecundity. Together, led 0.5-0.6 decrease. Female establishment period main bottlenecks. We found no nest provisioning rate, offspring body weight sex ratio. Our study shows how may affect several components and, ultimately, growth. results calls for rethinking pollinator risk assessment schemes, which should target only single compounds also likely co-occur environments.

Язык: Английский

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Demethylation Inhibitor Fungicides Have a Significantly Detrimental Impact on Population Growth and Composition of Nectar Microbial Communities

Microbial Ecology, Год журнала: 2024, Номер 87(1)

Опубликована: Дек. 1, 2024

Demethylation inhibitor (DMI) fungicides are a mainstay of modern agriculture due to their widespread use for crop protection against plant-pathogenic fungi. However, DMI residues can disperse and persist in the environment, potentially affecting non-target Previous research has demonstrated that DMIs other inhibit yeast growth floral nectar microbial communities decrease fungal richness diversity exposed flowers with no apparent effect on bacteria. Nevertheless, population different species inhabitants dynamics these remains understudied. To address issues, this study we created synthetic including yeasts (Metschnikowia reukaufii Metschnikowia pulcherrima) bacteria (Rosenbergiella epipactidis Comamonas sp.) propagated them culture media containing (imazalil, propiconazole, prothioconazole) at doses or fungicide. Our results showed have significant impact some most common by favoring over yeasts. Furthermore, habitat generalists such as M. pulcherrima sp. were more impacted presence than specialists R. epipactidis, especially upon dispersal across patches. Future should determine if patterns observed present hold true microbes explore interaction between limitation fungicide presence, limitation, mechanisms involved community assembly nectar.

Язык: Английский

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Lung Lesions in Exposure to Pesticides and Herbicides (Literature Review and Case Report)

Bulletin of Science and Practice, Год журнала: 2024, Номер 10(8), С. 281 - 307

Опубликована: Авг. 14, 2024

Pesticides (herbicides, insecticides, fungicides, zoocides) are mixtures of substances chemical or biological origin used to destroy inhibit the growth microorganisms, fungi, harmful vegetation, and other living organisms. These organisms damage crop livestock production, degrade quality agricultural products, materials, goods. classified into organic, inorganic based on their composition. About 1,000 active ingredients in pesticides, which 310 considered particularly hazardous. Extensive use pesticides leads destruction biocenoses emergence various pathological changes human body. Among pesticide with acute chronic toxicity, abamectin, aluminum phosphide, beta-cyfluthrin, bifenthrin, chlorpyrifos, deltamethrin, diazinon, fenamiphos, malathion, methomyl, oxamyl, primicarb, propargite, tebuconazole, chlorothalonil, bromoxynil, bromoxynil octanoate, brodifacoum, others stand out. In conditions load soils, frequency allergic respiratory diseases is steadily increasing. Chronic obstructive pulmonary disease (COPD), caused by smoking loss working capacity social activity, as well significant costs for treatment rehabilitation. The article discusses pathogenetic clinical aspects formation COPD under synergy (smoking + pesticides). Various phenotypes also considered. A case a patient prolonged contact (mosplan, zellek-super, goal 2E), manifested failure, multifocal atherosclerosis, heart described.

Язык: Английский

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Demethylation inhibitor fungicides have a significantly detrimental impact on population growth and community composition of nectar microbial communities

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Дек. 2, 2024

Demethylation inhibitor (DMI) fungicides are a mainstay of modern agriculture due to their widespread use for crop protection against plant-pathogenic fungi. However, DMI residues can disperse and persist in the environment, potentially affecting non-target Previous research has demonstrated that DMIs other inhibit yeast growth floral nectar microbial communities decrease fungal richness diversity exposed flowers with no apparent effect on bacteria. Nevertheless, population different species inhabitants dynamics these remains understudied. To address issues, this study we created synthetic including specialist habitat generalist yeasts bacteria propagated them artificial nectars containing (imazalil, propiconazole, prothioconazole) at doses or fungicide. Our results showed have significant impact populations favor over yeasts. Furthermore, generalists more impacted by than specialists, detrimental community composition seems be amplified upon dispersal across patches. Future should explore interaction between limitation fungicide presence, limitation, mechanisms involved assembly nectar.

Язык: Английский

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Mixture of neonicotinoid and fungicide affects foraging activity of honeybees

Environmental Toxicology and Pharmacology, Год журнала: 2024, Номер unknown, С. 104613 - 104613

Опубликована: Дек. 1, 2024

Язык: Английский

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