Thiamethoxam seed treatments reduce foliar predator and pollinator populations in sunflowers ( Helianthus annuus ), and extra-floral nectaries as a route of exposure for seed treatments to affect the predator, Coleomegilla maculata (Coleoptera: Coccinellidae)

Bredeson, Michael M.; Lundgren, Jonathan G.

doi:10.1016/j.cropro.2017.12.019

Cited by 20 publications

(10 citation statements)

References 52 publications

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“…For this reason, part of these products is used into the treatment of seeds to provide the plant protection against pests from sowing time through germination until it is fully grown. Such total long-term protection remains active for a long time period and is distributed through stalks, leaves, and flowers of the plant, and then get into pollen, nectar, and the drops of water excreted by plant stomata (Bredeson and Lundgren 2018; Sur and Stork 2003).…”

Section: Use Of Neonicotinoidsmentioning

confidence: 99%

A holistic study of neonicotinoids neuroactive insecticides—properties, applications, occurrence, and analysis

Buszewski

Bukowska

Ligor

et al. 2019

Environ Sci Pollut Res

101

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Among pesticides and foliar sprays involved in the treatment of seed, soil, and grass, also to crops, an important group is neonicotinoids. Neonicotinoid pesticides present similar properties with nicotine, but the mentioned compounds are less harmful for humans. Nevertheless, neonicotinoids are poisonous to insects and some invertebrates, which can act against insects' central nervous system, leading to their death. Moreover, neonicotinoids can affect the reproduction, foraging, and flying ability of honeybee and other insects including pollinators. In the present study, some neonicotinoids, such as imidacloprid, acetamiprid, clothianidin, thiacloprid, and thiamethoxam together with their toxic effects, have been presented. The Environmental Protection Agency (EPA) classifies these neonicotinoids as II and III class toxicity agents. Due to accumulation of these pesticides into the pollen of treated plants, especially due to their toxic effects against pollinators, the consequences of the occurrence of these insecticides have been discussed. Analytical aspects and methods involved in the isolation and determination of this class of pesticides have been presented in this contribution.

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Section: Use Of Neonicotinoidsmentioning

confidence: 99%

A holistic study of neonicotinoids neuroactive insecticides—properties, applications, occurrence, and analysis

Buszewski

Bukowska

Ligor

et al. 2019

Environ Sci Pollut Res

101

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“…The stimulation of growth parameters may be the result of improved activity of antioxidants and stress-related enzymes such as guaiacol peroxidase and glucose-6-phosphate dehydrogenase ( Ding et al, 2018 ). Previous studies have shown that insecticides, especially neonicotinoids, cause a decline in natural enemies and pollinators ( Moser and Obrycki, 2009 ; Bredeson and Lundgren, 2018 ). Therefore, further studies are needed to explore the effects of CHL + CLO and CYA + THI on nontarget insects in the corn field.…”

Section: Discussionmentioning

confidence: 99%

Seed Treatment with Diamide and Neonicotinoid Mixtures for Controlling Fall Armyworm on Corn: Toxicity Evaluation, Effects on Plant Growth and Residuality

Liu

et al. 2022

Front. Chem.

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The diamides, chlorantraniliprole (CHL) and cyantraniliprole (CYA), have been used as seed treatment agents against the fall armyworm (FAW), Spodoptera frugiperda in China. However, large-scale application of these two insecticides is prohibited because of their high cost. The neonicotinoid insecticides, clothianidin (CLO) and thiamethoxam (THI), are cheaper and widely used. In this study, we tested the efficacy of CHL + CLO and CYA + THI as seed treatment agents against FAW larvae both in laboratory and field conditions. Laboratory experiments showed that the two binary mixtures (both 240 g.a.i.100 kg−1 corn seeds) caused FAW mortality exceeded 84.00% at 14 days after seedling emergence (DAE). The mortality of the binary mixtures were similar to either CHL (300 g.a.i.100 kg−1corn seeds) or CYA (144 g a.i.100 kg−1corn seeds), but higher than CLO (120 g.a.i.100 Kg−1corn seeds) or THI (180 g a.i.100 kg−1corn seeds). Two independent field experiments showed that both binary mixtures resulted in above 68.00% control efficacy at 14 DAE, suggesting that these insecticidal combinations could effectively control FAW over a relative long period. In addition, both binary mixtures showed no negative effects on the growth and development of corn seedlings. The residues of binary mixtures in corn leave were also lower at 28 DAE as compared to residues in CHL or CYA alone. Most importantly, the costs of CHL + CLO were reduced up to 50% and CYA + THI up to 20% when compared to singly used chemical. Totally, our results indicated that CHL + CLO and CYA + THI had the same control efficacy as CHL or CYA alone, but with much lower cost.

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“…We were unable to use the control organs in our standard curve because our experiment was unintentionally contaminated with imidacloprid; therefore, we used the deer sample with the lowest absorbance value as our baseline for quantifying imidacloprid quantities. We optimized the tissue preparation approach for this ELISA on solid samples using peer-reviewed methods 29 – 34 .…”

Section: Methodsmentioning

confidence: 99%

Effects of Neonicotinoid Insecticides on Physiology and Reproductive Characteristics of Captive Female and Fawn White-tailed Deer

Berheim

Jenks

Lundgren

et al. 2019

Sci Rep

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Over the past decade, abnormalities have been documented in white-tailed deer (Odocoileus virginianus) in west-central Montana. Hypotheses proposed to explain these anomalies included contact with endocrine disrupting pesticides, such as imidacloprid. We evaluated the effects of imidacloprid experimentally at the South Dakota State University Wildlife and Fisheries Captive Facility where adult white-tailed deer females and their fawns were administered aqueous imidacloprid (an untreated control, 1,500 ng/L, 3,000 ng/L, and 15,000 ng/L). Water consumption, thyroid hormone function, behavioral responses, and skull and jawbone measurements were compared among treatments. Additionally, liver, spleen, genital, and brain imidacloprid concentrations were determined by an enzyme-linked immunosorbent assay (ELISA). Results indicated that 1) control deer consumed more water than treatment groups, 2) imidacloprid was present in the organs of our control group, indicating environmental contamination, 3) as imidacloprid increased in the spleen, fawn survival, thyroxine levels, jawbone lengths, body weight, and organ weights decreased, 4) adult female imidacloprid levels in the genitals were negatively correlated with genital organ weight and, 5) behavioral observations indicated that imidacloprid levels in spleens were negatively correlated with activity levels in adult females and fawns. Results demonstrate that imidacloprid has direct effects on white-tailed deer when administered at field–relevant doses.

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Thiamethoxam seed treatments reduce foliar predator and pollinator populations in sunflowers ( Helianthus annuus ), and extra-floral nectaries as a route of exposure for seed treatments to affect the predator, Coleomegilla maculata (Coleoptera: Coccinellidae)

Cited by 20 publications

References 52 publications

A holistic study of neonicotinoids neuroactive insecticides—properties, applications, occurrence, and analysis

A holistic study of neonicotinoids neuroactive insecticides—properties, applications, occurrence, and analysis

Seed Treatment with Diamide and Neonicotinoid Mixtures for Controlling Fall Armyworm on Corn: Toxicity Evaluation, Effects on Plant Growth and Residuality

Effects of Neonicotinoid Insecticides on Physiology and Reproductive Characteristics of Captive Female and Fawn White-tailed Deer

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