Effect of hydration status on pesticide uptake in anurans following exposure to contaminated soils

Glinski, Donna A.; Henderson, W. Matthew; Meter, Robin J. Van; Purucker, S. Thomas

doi:10.1007/s11356-018-1830-8

Cited by 13 publications

(3 citation statements)

References 54 publications

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“…Uptake of pesticides through dermal exposure in postmetamorphic amphibians is well documented in recent literature (Henson‐Ramsey et al ; Van Meter et al , , , 2018; Glinski et al , ). In the present study, immediately following the 8‐h exposure, atrazine tissue concentrations were similar among frogs in all treatments, except for the combined treatments of atrazine with urea, in which atrazine concentrations were markedly lower.…”

Section: Discussionmentioning

confidence: 89%

Agrochemical Mixtures and Amphibians: The Combined Effects of Pesticides and Fertilizer on Stress, Acetylcholinesterase Activity, and Bioaccumulation in a Terrestrial Environment

Meter

Adelizzi

Glinski

et al. 2019

Enviro Toxic and Chemistry

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Tank mixtures are popular within the agricultural community because they are time‐ and cost‐effective, but field applications leave nontarget organisms at risk of exposure. We explored the effects of a common herbicide (atrazine and alachlor) and fertilizer (urea) tank mixture on juvenile frog corticosterone stress levels, acetylcholinesterase (AChE) activity, and pesticide bioaccumulation. Single agrochemical or tank mixtures were applied to terrestrial microcosms, and then individual Southern leopard frog (Lithobates sphenocephala) juveniles were added to microcosms for an 8‐h exposure. Afterward, frogs were transferred to aquatic microcosms for 1 h to monitor corticosterone prior to euthanasia, brain tissues were excised to evaluate AChE, and tissue homogenates were analyzed for pesticide bioconcentation with gas chromatography–mass spectrometry. Atrazine significantly increased corticosterone in frogs, particularly when combined with alachlor and urea. Atrazine increased AChE and urea decreased AChE, although no interactive effects of chemical combinations were discernible. Relative to their individual treatments, the complete tank mixture with all 3 agrochemicals resulted in 64% greater bioconcentration of atrazine and 54% greater bioconcentration of alachlor in frog tissues. Our results suggest that agrochemical mixtures as well as their active ingredients can lead to altered stress levels and impaired physiological responses in amphibians. An improved understanding of the effects of co‐exposure to environmental contaminants in amphibians is important in assessing the ecological risks these compounds pose. Environ Toxicol Chem 2019;9999:1–10. © 2019 SETAC

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Section: Discussionmentioning

confidence: 89%

Agrochemical Mixtures and Amphibians: The Combined Effects of Pesticides and Fertilizer on Stress, Acetylcholinesterase Activity, and Bioaccumulation in a Terrestrial Environment

Meter

Adelizzi

Glinski

et al. 2019

Enviro Toxic and Chemistry

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“…Organic matter content of soil can therefore affect the bioavailability of pesticides in many agricultural fields. Glinski et al (2018a) investigated the influence of hydration status on the absorption of pesticides. Experimental treatments included varying dehydration periods prior to exposure to pesticide‐contaminated soils.…”

Section: Methodsmentioning

confidence: 99%

Estimating dermal contact soil exposure for amphibians

Purucker

Snyder

Glinski

et al. 2022

Integr Envir Assess & Manag

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Chemical exposure estimation through the dermal route is an underemphasized area of ecological risk assessment for terrestrial animals. Currently, there are efforts to create exposure models to estimate doses from this pathway for use in ecological risk assessment. One significant limitation has been insufficient published data to characterize exposure and to support the selection and parameterization of appropriate models, particularly for amphibians in terrestrial habitats. Recent publications measuring pesticide doses to terrestrial-phase amphibians have begun to rectify this situation. We collated and summarized available measurements of terrestrial amphibian dermal exposure to pesticides from 11 studies in which researchers measured tissue concentrations associated with known pesticide experimental application rates. This data set included tissue concentrations in 11 amphibian species and 14 different pesticides. We then compared the results of two screening exposure models that differed based on surface area scaling approaches as a function of body weight (one based on birds as surrogates for amphibians and another amphibian-specific) to the measured tissue residue concentrations. We define a false-negative rate for each screening model as the proportion of amphibians for which the predicted concentration is less than the observed concentration (i.e., underestimate), contrary to the intent of screening models, which are intended to have a bias for higher exposure concentrations. The screening model that uses birds as surrogates did not have any instances where estimated expected avian doses were less than measured amphibian body burdens. When using the amphibian-specific exposure model that corrected for differences between avian and amphibian surface area, measured concentrations were greater than model estimates for 11.3% of the 1158 comparisons. The database of measured pesticide concentrations in terrestrial amphibians is provided for use in calculating bioconcentration factors and for future amphibian dermal exposure model development. Integr

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“…In rural landscapes, pesticides have raised awareness as they pose a high risk to amphibian communities (Ortiz-Santaliestra et al, 2018). One of the reasons for the great susceptibility of the amphibian group to pesticides released into the environment is due to their biphasic life cycle, which requires aquatic and terrestrial habitats for reproduction and feeding (Haddad et al, 2013;Glinski et al, 2018;Gonçalves et al, 2019). By using the aquatic environment, amphibians have a high permeability of the epidermis (Nyström et al, 2007;Llewelyn et al, 2019), which makes them more exposed to contaminants present in water resources.…”

Section: Introductionmentioning

confidence: 99%

In situ works on ecotoxicology in amphibians: current state of the art

et al. 2023

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Amphibians play a fundamental role in the functioning of ecosystems, mainly in the nutrient cycle, energy flow, and pest control. This group has a massive population decline, with approximately 41% of all species at risk, highlighting pesticide pollution as one of the main threats to the loss of anuran biodiversity. This occurs since amphibians have an epidermis with high permeability and a biphasic life cycle, where they use both the aquatic and terrestrial environments, allowing exposure and making them susceptible to chemical agents released into the environment. This makes amphibians a model group in ecotoxicological studies. However, due to the greater control of experimental conditions, the vast majority of studies are carried out in the laboratory, thus maintaining a gap in knowledge about the effects of pesticides on amphibians in natural environments. Under natural conditions, where environmental variables are not controlled, experiments must relate all the dynamics of the interaction of substances existing in the environment, and their influences on organisms. To evaluate the studies already performed under natural conditions, a bibliographic survey was carried out through a search with the Web of Science and SCOPUS databases, considering articles published in the last twenty years, using the terms 'field experimentation' or 'in situ study', associated with 'tadpole' and 'agrochemical' or 'pesticide', using a descriptive methodology. Twenty-one abstracts were pre-selected, they were further evaluated and the methodologies were checked to ensure only the analysis of experiments conducted in the field conditions. Thus, ten works were selected for the construction of the review. The works selected used native amphibian species, considered generalists, present in the study region, and were carried out in environments intended for agricultural cultivation with control groups in preserved locations. In these works, different methodologies were used, such as intentional spraying of water bodies, quantification of pesticides in the study sites, and verification of changes caused by the environment on tadpoles. The main evaluations were based on the survival and morphological changes of the tadpoles and, in some cases, on cytological and biochemical assays.

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Effect of hydration status on pesticide uptake in anurans following exposure to contaminated soils

Cited by 13 publications

References 54 publications

Agrochemical Mixtures and Amphibians: The Combined Effects of Pesticides and Fertilizer on Stress, Acetylcholinesterase Activity, and Bioaccumulation in a Terrestrial Environment

Agrochemical Mixtures and Amphibians: The Combined Effects of Pesticides and Fertilizer on Stress, Acetylcholinesterase Activity, and Bioaccumulation in a Terrestrial Environment

Estimating dermal contact soil exposure for amphibians

In situ works on ecotoxicology in amphibians: current state of the art

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