Sperm parameters of honeybee drones exposed to imidacloprid

Ciereszko, Andrzej; Wilde, J.; Dietrich, G.J.; Siuda, M.; Bąk, Beata; Judycka, Sylwia; Karol, Halina

doi:10.1007/s13592-016-0466-2

Cited by 45 publications

(45 citation statements)

References 47 publications

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“…Sublethal doses of neonicotinoids impaired larval development, gland and neurobiological functions (Blacquière et al 2012;Henry et al 2015;Mužinić and Želježić 2018), longevity, resistance to biotic and abiotic stress (Van der Sluijs et al 2013;Dively et al 2015), foraging, and orientation (Colin et al 2019;Jacob et al 2019) in honeybee workers. IMD also increased the replacement rate, impaired reproductive traits, decreased body weight in queens (Williams et al 2015;Chaimanee et al 2016), and handicapped the sperm quality of drones (Ciereszko et al 2017). Chronic, sublethal effects were more prevalent than acute toxicity (Hladik et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Imidacloprid markedly affects hemolymph proteolysis, biomarkers, DNA global methylation, and the cuticle proteolytic layer in western honeybees

et al. 2020

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Imidacloprid (IMD) may affect proteolysis, aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and global DNA methylation in honeybees. Queens, drones, and workers aged 1 or 20 days were exposed (free-flying colonies) to IMD (5 ppb and 200 ppb) in their diet. As a result, the colony depopulation did not occurred. IMD disturbed hemolymph/cuticle proteolysis; deactivated most of the cuticle protease inhibitors, activated hemolymph thiol and metal proteases and cuticle thiol proteases; downregulated ALP, ALT, AST; and increased DNA methylation in a caste-and age-dependent manner. The response in queens and workers differed, possibly due to eusocial evolution. Higher IMD dose had greater effects. The responses of ALP, ALT, AST, and DNA may reflect acceleration of biochemical senescence and epigenetic adaptation to IMD. All these biochemical side effects may lead to colony depopulation during future biotic/abiotic stress.

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Section: Introductionmentioning

confidence: 99%

Imidacloprid markedly affects hemolymph proteolysis, biomarkers, DNA global methylation, and the cuticle proteolytic layer in western honeybees

et al. 2020

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“…Another recent study looked at the effects of the common neonicotinoid insecticide imidacloprid on drone reproductive quality. Ciereszko et al (2017) randomly fed 18 colonies either an insecticide-free pollen and sugar syrup paste or fed them a similar paste that contained 200 ppb imidacloprid. Workers were not prevented from foraging, but their colonies relied on the artificial food due to a lack of natural floral resources.…”

Section: Effects Of Farmer-applied Insecticidesmentioning

confidence: 99%

Factors affecting the reproductive health of honey bee (Apis mellifera) drones—a review

Rangel

Fisher

2019

Apidologie

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In the honey bee, Apis mellifera , colonies are composed of one queen, thousands of female workers, and a few thousand seasonal males (drones) that are reared only during the reproductive season when colony resources are plentiful. Despite their transient presence in the hive, drones have the important function of mating with virgin queens, transferring their colony's genes to their mates for the production of fertilized, worker-destined eggs. Therefore, factors affecting drone health and reproductive competency may directly affect queen fitness and longevity, having great implications at the colony level. Several environmental and in-hive conditions can affect the quality and viability of drones in general and their sperm in particular. Here we review the extant studies that describe how environmental factors including nutrition, temperature, season, and age may influence drone reproductive health. We also review studies that describe other factors, such as pesticide exposure during and after development, that may also influence drone reproductive quality. Given that sperm development in drones is completed during pupation prior to adult emergence, particular attention needs to be paid to these factors during drone development, not just during adulthood. The present review showcases a growing body of evidence indicating that drones are very sensitive to environmental fluctuations and that these factors cause drones to underperform, potentially compromising the reproductive health of their queen mates, as well as the overall fitness of their colony.

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“…This is the case of the lady beetle Hippodamia variegata exposed to sublethal concentrations of thiamethoxam [80]. Neonicotinoids can also negatively affect honeybee drone sperm quality [81,82] while fipronil affects drone fertility by inducing a decrease in spermatozoa quantity that is associated with an increase in spermatozoa mortality [83], so these insecticides may ultimately lead to colony failure [84].…”

Section: Toxicity Assessmentmentioning

confidence: 99%

Assessment of ecological risks of agrochemicals requires a new framework.

Bayo¹,

Tennekes²

2017

Environ Risk Assess Remediat

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The widespread contamination of a significant proportion of the planet's land and water with pesticides is undeniable. While this takes place, innumerable species of animals associated with agricultural landscapes are declining at rates that may put them on the brink to extinction in the span of a lifetime. It is evident, therefore, that our current risk assessment of agrochemicals has failed to protect the environment. A new framework is proposed here that combines the mandatory introduction of new toxicity endpoints with a more logical assessment of risks within the existing tiered approach. Chronic toxicity tests designed to detect time-cumulative effects should be a requirement for assessing delayed mortality as well as population endpoints that are crucial for the recovery and survival of species, such as fecundity. Exposure assessments should ensure that field monitoring data integrate both the highest and average levels of residues, as the former levels determine the main ecological impacts. The first tier of the risk assessment should comprise an evaluation of short-term mortality (as currently done by a hazard quotient on acute toxicity) and of the lethality after chronic exposure to sublethal levels. Chemicals that pass this tier should be assessed in a second tier whereby the crucial population endpoints are evaluated. Unless there is evidence of recovery with no negative effects on reproduction of the species tested, a chemical should not be registered. Further tiers of assessment, including sublethal effects, community effects tested in model ecosystems (i.e. microcosms, mesocoms) and field trials can still be used as supporting evidence, as it is currently done. AbstractAssessment of ecological risks of agrochemicals requires a new framework.

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Sperm parameters of honeybee drones exposed to imidacloprid

Cited by 45 publications

References 47 publications

Imidacloprid markedly affects hemolymph proteolysis, biomarkers, DNA global methylation, and the cuticle proteolytic layer in western honeybees

Imidacloprid markedly affects hemolymph proteolysis, biomarkers, DNA global methylation, and the cuticle proteolytic layer in western honeybees

Factors affecting the reproductive health of honey bee (Apis mellifera) drones—a review

Assessment of ecological risks of agrochemicals requires a new framework.

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