Spatial and temporal distribution of trunk‐injected 14C‐imidacloprid in Fraxinus trees

Tanis, Sara R.; Cregg, Bert M.; Mota-Sánchez, David; McCullough, Deborah G.; Poland, Therese M.

doi:10.1002/ps.2281

Cited by 43 publications

(47 citation statements)

References 26 publications

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“…In hemlock Table 6. (Tsuga canadensis), an evergreen species, imidacloprid concentrations in foliage peak approximately 9 to 15 mo after soil application; but concentrations of its metabolite imidacloprid olefin continue to rise for as long as 3 yr after treatment [48]. ), which is deciduous, occurs during the growing season immediately after treatment, with little remobilization the following year [9,49]. In contrast, most of the accumulation of imidacloprid into leaves of ash (Fraxinus spp.…”

Section: Discussionmentioning

confidence: 99%

Uptake and dissipation of neonicotinoid residues in nectar and foliage of systemically treated woody landscape plants

Mach

Bondarenko²,

Potter

2017

Enviro Toxic and Chemistry

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Systemic neonicotinoid insecticides used in urban arboriculture could pose a risk to bees and other pollinators foraging on treated plants. We measured uptake and dissipation of soil-applied imidacloprid and dinotefuran in nectar and leaves of 2 woody plant species, a broadleaf evergreen tree (Ilex × attenuata) and a deciduous shrub (Clethra alnifolia), to assess concentrations to which pollinators and pests might be exposed in landscape settings. Three application timings, autumn (postbloom), spring (prebloom), and summer (early postbloom), were evaluated to see if taking advantage of differences in the neonicotinoids' systemic mobility and persistence might enable pest control while minimizing transference into nectar. Nectar and tissue samples were collected from in-ground plants and analyzed for residues by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) in 2 successive years. Concentrations found in nectar following autumn or spring applications ranged from 166 to 515 ng/g for imidacloprid and from 70 to 1235 ng/gg for dinotefuran, depending on plant and timing. These residues exceed concentrations shown to adversely affect individual- and colony-level traits of bees. Summer application mitigated concentrations of imidacloprid (8-31 ng/g), but not dinotefuran (235-1191 ng/g), in nectar. Our data suggest that dinotefuran may be more persistent than is generally believed. Implications for integrated pest and pollinator management in urban landscapes are discussed. Environ Toxicol Chem 2018;37:860-870. © 2017 SETAC.

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Section: Discussionmentioning

confidence: 99%

Uptake and dissipation of neonicotinoid residues in nectar and foliage of systemically treated woody landscape plants

Mach

Bondarenko²,

Potter

2017

Enviro Toxic and Chemistry

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“…Lim (1997) describes a hand-operated pressure injector. A study of the variable spatial and temporal distribution of imidacloprid injected in Fraxinus trees showed that as ash trees have a sectored 'zig-zag' xylem structure, control of Agrilus planipennis, the emerald ash borer, was variable (Tanis et al, 2012). A systemic insecticide such as monocrotophos is used as it is readily taken by the xylem to the crown of the tree.…”

Section: Tree Injectionmentioning

confidence: 99%

Specialist application techniques (injection, fumigation and other techniques)

2014

Pesticide Application Methods

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“…[11][12][13] In this work, unlabeled pesticides were injected in coconut tree trunk in order to know if pesticides translocate in the xylem. However, research involving radiolabeled pesticides involves bureaucratic issues and it is more difficult to perform, because it is necessary to isolate the work area (environmental problem), the number of available radiolabeled pesticides is limited, trained professionals are required, and it is an expensive work due to the controlled acquisition and discarding of the radiolabeled pesticides.…”

Section: Introductionmentioning

confidence: 99%

Determination of pesticide residues in coconut tree trunks by modified QuEChERS method and ultra-high-performance liquid chromatography coupled to triple quadrupole tandem mass spectrometry

et al. 2015

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A rapid and reliable method for the determination of 10 pesticide residues in coconut (Cocos nucifera L.) tree trunks after endotherapy treatments has been established. A modified QuEChERS (quick, easy, cheap, effective, rugged and safe) method, using an homogeneous sample slurry and acetate buffer, followed by ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was developed and validated. Under the best extraction conditions, the average recoveries for all pesticides spiked at 40, 80 and 200 mg kg À1 ranged from 70 to 93%, with RSD <10%. Intermediate precision expressed as RSD, ranged between 3 and 6% for all compounds. Calibration curves showed a wide linear range between 10.0 and 1000.0 mg kg À1 for all compounds studied. Limit of quantification was established as 40.0 mg kg À1 . The developed procedure was employed in the analysis of real coconut tree trunk samples obtained 45 h after pesticides application using endotherapy treatment.Concentrations of pesticides were between 44.7 AE 5 and 938.3 AE 20 mg kg À1 . These results prove the translocation of pesticides in different heights, in the coconut tree trunk, from the application point. Imidacloprid presented the highest acropetal translocation and was found near the leaves at 61 AE 6 mg kg À1 .

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Spatial and temporal distribution of trunk‐injected ¹⁴C‐imidacloprid in Fraxinus trees

Cited by 43 publications

References 26 publications

Uptake and dissipation of neonicotinoid residues in nectar and foliage of systemically treated woody landscape plants

Uptake and dissipation of neonicotinoid residues in nectar and foliage of systemically treated woody landscape plants

Specialist application techniques (injection, fumigation and other techniques)

Determination of pesticide residues in coconut tree trunks by modified QuEChERS method and ultra-high-performance liquid chromatography coupled to triple quadrupole tandem mass spectrometry

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