Insecticide exposure alters flight-dependent gene-expression in honey bees, Apis mellifera DOI Creative Commons

Verena Christen,

Lukas T. Jeker, Ka S. Lim

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 956, P. 177166 - 177166

Published: Nov. 6, 2024

The increased reports of wild bee declines and annual losses managed bees pose a significant threat to biodiversity agricultural productivity. While these are likely driven by various factors, the exposure agrochemicals has raised concern due their ubiquitous use potential adverse effects. Despite numerous studies suggesting neonicotinoids can negatively affect at behavioral molecular level, data linking two factors remains sparse. Here we provide on impact an acute dose neonicotinoid thiamethoxam flight performance transcription profiles foraging honey (Apis mellifera). Using controlled experimental design with tethered mills, measured distance, duration, speed, alongside expression genes involved in energy metabolism, hormone regulation, biosynthesis. Acute resulted hyperactive behavior but led dysregulation associated oxidative phosphorylation, indicating disruptions cellular production. These changes were particularly evident when engaged activities, that combined stress pesticide physical exertion exacerbates negative outcomes. Our study provides new insights into mechanisms underlying neonicotinoid-induced impairments physiology help understand long-term consequences xenobiotic abilities ultimately fitness.

Language: Английский

Differential effects of clothianidin exposure on metabolic rates across life stages of Danaus plexippus (Lepidoptera: Nymphalidae) DOI
Staci Cibotti, Jared G. Ali, Rudolf J. Schilder

et al.

Environmental Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

Abstract The restoration of milkweed to agricultural landscapes is thought be essential for bolstering declining monarch butterfly (Danaus plexippus) populations. However, the rise neonicotinoid seed treatments in recent decades has severely increased toxicity these insects. It therefore crucial that we understand how monarchs utilize neonicotinoid-contaminated plants and their impacts on health better inform conservation efforts. We monitored usage (Asclepias syriaca) plantings adjacent clothianidin-treated untreated cornfields found both were utilized with equal frequency. then examined plant-mediated larval clothianidin exposure affected development, morphology, energetics by tracking mortality rates, development times, body metrics, metabolic rates across life stages. no difference or metrics between 2 treatment groups. Larvae feeding required less time reach pupation than those control plants, but there was eclosion. Larval did not affect resting at any stage; however, it lowered average peak flight adults, effects being stronger males females. These findings suggest clothianidin-contaminated can have carry-over sublethal adulthood, which may adversely capacity, particularly males. Further studies are needed elucidate possible aspects ecology, including foraging, migratory, reproductive potential.

Language: Английский

Citations

0
Neonicotinoid Insecticides can Enhance Milkweed Vigor and Subsequently Impact Monarch Performance DOI
Staci Cibotti,

Nathaniel B. McCartney,

Rudolf J. Schilder

et al.

Journal of Chemical Ecology, Journal Year: 2025, Volume and Issue: 51(1)

Published: Feb. 1, 2025

Language: Английский

Citations

0
Insect Flight: State of the Field and Future Directions DOI
Lisa A. Treidel, Kevin D. Deem, Mary K. Salcedo

et al.

Integrative and Comparative Biology, Journal Year: 2024, Volume and Issue: 64(2), P. 533 - 555

Published: July 8, 2024

The evolution of flight in an early winged insect ancestral lineage is recognized as a key adaptation explaining the unparalleled success and diversification insects. Subsequent transitions modifications to machinery, including secondary reductions losses, also play central role shaping impacts insects on broadscale geographic ecological processes patterns present future. Given importance flight, there has been centuries-long history research debate evolutionary origins biological mechanisms flight. Here, we revisit this from interdisciplinary perspective, discussing recent discoveries regarding developmental origins, physiology, biomechanics, neurobiology sensory control diverse set models. We identify major outstanding questions yet be addressed provide recommendations for overcoming current methodological challenges faced when studying which will allow field continue move forward new exciting directions. By integrating mechanistic work into contexts, hope that synthesis promotes stimulates efforts necessary close many existing gaps about causes consequences evolution.

Language: Английский

Citations

2
Milkweed in agricultural field margins - A neonicotinoid exposure route for pollinators at multiple life stages DOI Creative Commons
Ilona Naujokaitis‐Lewis, Sarah Endicott,

Emma S. Gaudreault

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175622 - 175622

Published: Aug. 18, 2024

Neonicotinoid insecticides move from targeted crops to wildflowers located in adjacent field margins, acting as a potential exposure source for wild pollinators and insect species of conservation concern, including monarch butterflies. Monarchs rely on milkweed over multiple life stages, host plant eggs food both larvae (leaves) adults (flowers). Milkweeds, which are closely associated with can contain neonicotinoid residues, but previous assessments constrained single tissue type. In 2017 2018, we sampled milkweeds 95 margins crop fields (corn, soybean, hay, wheat, barley) agricultural landscapes eastern Ontario, Canada. Milkweeds were during the flower blooming period leaves tissues analysed. The neonicotinoids acetamiprid, clothianidin, thiamethoxam, thiacloprid detected. Maximum concentrations leaf samples included 10.30 ng/g clothianidin 2017, 24.4 thiamethoxam 2018. Clothianidin percent detections flowers (72 % 61 %, respectively) significantly higher than (24 31 respectively). Thiamethoxam paired (median 0.33 vs <0.07 ng/g) while also trended 0.18-0.55 <0.18 ng/g). Only showed significant differences between years, found no effect type, soybean corn all yielding 50-56 leaves. We older young or (medians 0.87 0.45 Our results highlight importance considering variation type age risk assessments. Efforts increase availability should consider how be mitigated.

Language: Английский

Citations

0
Insecticide exposure alters flight-dependent gene-expression in honey bees, Apis mellifera DOI Creative Commons

Verena Christen,

Lukas T. Jeker, Ka S. Lim

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 956, P. 177166 - 177166

Published: Nov. 6, 2024

The increased reports of wild bee declines and annual losses managed bees pose a significant threat to biodiversity agricultural productivity. While these are likely driven by various factors, the exposure agrochemicals has raised concern due their ubiquitous use potential adverse effects. Despite numerous studies suggesting neonicotinoids can negatively affect at behavioral molecular level, data linking two factors remains sparse. Here we provide on impact an acute dose neonicotinoid thiamethoxam flight performance transcription profiles foraging honey (Apis mellifera). Using controlled experimental design with tethered mills, measured distance, duration, speed, alongside expression genes involved in energy metabolism, hormone regulation, biosynthesis. Acute resulted hyperactive behavior but led dysregulation associated oxidative phosphorylation, indicating disruptions cellular production. These changes were particularly evident when engaged activities, that combined stress pesticide physical exertion exacerbates negative outcomes. Our study provides new insights into mechanisms underlying neonicotinoid-induced impairments physiology help understand long-term consequences xenobiotic abilities ultimately fitness.

Language: Английский

Citations

0