Pesticide impact study in the peri-urban horticultural area of Gran La Plata, Argentina

Loughlin, Tomás M. Mac; Peluso, Leticia; Marino, Damián

doi:10.1016/j.scitotenv.2017.04.116

Cited by 87 publications

(54 citation statements)

References 44 publications

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“…The effects of chlorpyrifos reported at the individual and biochemical levels on B. pulchella larvae are within the range of chlorpyrifos levels measured in local environments. Specifically, the highest concentrations measured in suspended particles were 0.226 mg chlorpyrifos/kg (Jergentz et al 2005; MacLoughlin et al 2017). These values are within the 95% confidence interval of the EC1 and the EC10 that induce swimming alterations at 96 h in B. pulchella tadpoles and are 4.5 times higher than the concentrations that induce effects at the biochemical level.…”

Section: Discussionmentioning

confidence: 99%

“…It has a persistence of more than 2 mo in water and 6 mo in sediment, being even higher at low temperature, light, and pH conditions (Watts 2012). Previous studies in different parts of the world showed that chlorpyrifos enters aquatic ecosystems with concentrations in water, suspended particles, and sediment ranging from 5 × 10 –7 to 0.017 mg/L, 0.003 to 0.226 mg/kg, and 0.001 to 2.258 mg/kg, respectively (Barron and Woodburn 1995; Jergentz et al 2005; Marino and Ronco 2005; Claver et al 2006; Mugni et al 2011; De Gerónimo et al 2014; MacLoughlin et al 2017; Alvarez et al 2019). Thus, the entire system may be at risk of exposure, including nontarget organisms.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivity of Boana pulchella (Anura: Hylidae) Tadpoles to Environmentally Relevant Concentrations of Chlorpyrifos: Effects at the Individual and Biochemical Levels

Barreto

Costa

Demetrio

et al. 2020

Enviro Toxic and Chemistry

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We report sublethal effects of environmentally relevant concentrations of chlorpyrifos at the individual (swimming alterations) and biochemical (esterase activities and antioxidant enzymes) levels in the Montevideo tree frog Boana pulchella larvae. The 50% lethal concentration at 96 h (LC50‐96h) for chlorpyrifos in stage‐29 B. pulchella tadpoles was 0.98 mg/L, which was close to the 65th percentile of published anuran species sensitivity. In B. pulchella, chlorpyrifos disrupted biochemical processes: tadpoles showed a significant inhibition of esterase activity and a significant induction of antioxidant enzymes, indicating a response to an environmental challenge causing oxidative stress. Using principal components analysis, we could associate chlorpyrifos reduction in esterase activity with swimming alterations at 0.5 mg/L of the toxicant. The biochemical biomarkers reported in the present study respond at levels 20 times lower than the LC50‐96h and were associated with a biologically important response—swimming behavior. The link of responses across different levels of biological organization was demonstrated. The species is suitable as a model for ecotoxicological studies at different levels, including the individual and biochemical levels, and may be considered a good reference organism in environmental control programs. Environ Toxicol Chem 2020;39:834–841. © 2020 SETAC

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitivity of Boana pulchella (Anura: Hylidae) Tadpoles to Environmentally Relevant Concentrations of Chlorpyrifos: Effects at the Individual and Biochemical Levels

Barreto

Costa

Demetrio

et al. 2020

Enviro Toxic and Chemistry

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“…It is also interesting to note that the surface of the cultivated area of genetically modified soybean, engineered to be glyphosate resistant, has increased in the last years in Argentina (L opez et al, 2012;SAGyP, 2017), and currently, the country tops the list of major soybean producers worldwide, along with the United States and Brazil (Benbrook, 2016). Due to the growing concern about the possible contamination of resources because of the use of glyphosate-based formulations and other pesticides, several studies have been conducted in Argentina, aimed to determine their levels in different environmental matrices (Aparicio et al, 2013;Lupi et al, 2015;Mac Loughlin et al, 2017;Peruzzo et al, 2008;Primost et al, 2017;Ronco et al, 2016). Some of these studies revealed that the glyphosate concentrations ranged from 0.035 to 5.0 mg/kg in soils of Buenos Aires province, near to agricultural areas (Aparicio et al, 2013;Primost et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effects of glyphosate and its commercial formulation, Roundup® Ultramax, on liver histology of tadpoles of the neotropical frog, Leptodactylus latrans (amphibia: Anura)

et al. 2018

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In the last years, the agricultural expansion has led to an increased use of pesticides, with glyphosate as the most widely used worldwide. This is also the situation in Argentina, where glyphosate formulations are the most commercialized herbicides. It is known that glyphosate formulations are much more toxic than the active ingredient, and this difference in toxicity can be attributed to the adjuvants present in the formula. In this context, the aim of the present study was to evaluate and compare sub-lethal histological effects of the glyphosate formulation Roundup Ultramax and glyphosate active ingredient on Leptodactylus latrans tadpoles at Gosner-stage 36. Semi-static bioassays were performed using 96 h of exposure with Roundup Ultramax formulation (RU; 0.37-5.25 mg a.e./L), glyphosate (GLY; 3-300 mg/L), and a control group. RU exposure showed an increment in the melanomacrophagic cells (MMc) and melanomacrophagic centers (MMCs) from 0.37 mg a.e./L. GLY exposure showed a significant increment in the number of MMc from 15 mg/L, and of MMCs from 3 mg/L. Also, histopathological lesions were observed in the liver of tadpoles exposed to both, GLY and RU. These lesions included: lipidosis and hepatic congestion, but only RU showed significant differences respect to control, with a LOEC value of 2.22 mg a.e./L for both effects. In sum, this study represents the first evidence of adverse effects of glyphosate and RU formulation on the liver of anuran larvae at concentrations frequently found in the environment.

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“…The information on pesticide concentrations in horticulture watersheds is scarce (Kreuger et al, 2008;Allinson et al, 2014;Mottes et al, 2017). Only few studies have monitored the levels of those xenobiotic and the consequent toxicity to aquatic organisms in the La Plata horticultural belt (Mac Loughlin et al, 2017;Rimoldi et al, 2018). Solis et al (2018) compared the assemblage composition in streams influenced by agriculture or livestock and within a reserve.…”

Section: Introductionmentioning

confidence: 99%

Horticulture affects macroinvertebrate assemblages in adjacent streams (Buenos Aires, Argentina)

Arias¹,

Scalise²,

Solis³

et al. 2020

Knowl. Manag. Aquat. Ecosyst.

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The agrochemicals used on crops can reach watercourses, affecting water quality and biologic communities. The aim of this research was to study the effects of horticulture on the water quality and invertebrate assemblages of adjacent streams in Buenos Aires province, Argentina. Four streams draining horticultural basins were compared with another four considered less disturbed: two of the latter located in a Biosphere Reserve and the other two in extensive livestock-raising basins. Pesticides were detected in the horticulture-related streams, while nutrient concentrations were significantly higher than in the less-disturbed streams. The macroinvertebrate assemblages differed: the less-disturbed streams exhibited a significantly higher taxa richness and density. Hyalella sp. and Simocephalus vetulus were dominant, whereas Entomobryoidea, Dugessidae, and Glossiphoniidae were dominant in the horticulture-associated streams. Ephemeroptera (Caenis and Baetidae) were well represented in the less-disturbed streams and rare or absent in the horticulture-adjacent streams. Multivariate analysis indicated that the horticulture-impacted sites contained high nutrient concentrations and tolerant taxa, while the less-disturbed sites corresponded to lower nutrient concentrations and sensitive taxa. We propose Hyalella sp. and S. vetulus as water-quality indicators in pampean streams and conclude that intensive agrochemical applications in horticulture increase nutrient and pesticide loads affecting the macroinvertebrate assemblages of adjacent streams.

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Pesticide impact study in the peri-urban horticultural area of Gran La Plata, Argentina

Cited by 87 publications

References 44 publications

Sensitivity of Boana pulchella (Anura: Hylidae) Tadpoles to Environmentally Relevant Concentrations of Chlorpyrifos: Effects at the Individual and Biochemical Levels

Sensitivity of Boana pulchella (Anura: Hylidae) Tadpoles to Environmentally Relevant Concentrations of Chlorpyrifos: Effects at the Individual and Biochemical Levels

Effects of glyphosate and its commercial formulation, Roundup® Ultramax, on liver histology of tadpoles of the neotropical frog, Leptodactylus latrans (amphibia: Anura)

Horticulture affects macroinvertebrate assemblages in adjacent streams (Buenos Aires, Argentina)

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