Imazethapyr and imazapic, bispyribac-sodium and penoxsulam: Zooplankton and dissipation in subtropical rice paddy water

Reimche, Geovane Boschmann; Machado, Sérgio Luiz de Oliveira; Oliveira, Maria Angélica; Zanella, Renato; Dressler, Valderi L.; Flores, Érico M.M.; Gonçalves, Fábio Ferreira; Donato, Filipe F.; Nunes, Matheus A.G.

doi:10.1016/j.scitotenv.2015.01.055

Cited by 23 publications

(7 citation statements)

References 34 publications

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“…In this sense, low toxicity have been informed for the green alga Raphidocelis subcapitata (Sphaeropleales) and for aquatic invertebrates such as the phyllopoda Daphnia magna (Cladocera) after acute exposure (Kegley et al, 2020). In constrast, high levels of acute toxicity was reported in the gibbous duckweed Lemna gibba (Alismatales) (Magdaleno et al, 2015;Reimche et al, 2015;Kegley et al, 2020). Moreover, variation in sensitivity to IMZT has been reported in terrestrial invertebrates from low (earthworms) to high (honey bees) (Kegley et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Multiple Level Effects of Imazethapyr on Leptodactylus latinasus (Anura) Adult Frogs

Iglesias

Fanali

Franco‐Belussi

et al. 2021

Arch Environ Contam Toxicol

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Imazetapir is a herbicide used in soybean and corn crops worldwide. Ecotoxicological studies have shown that imazetapir promotes genotoxic, biochemical and individual effects in aquatic vertebrates. In this study, we evaluated the response of different biomarkers in adult specimens of Leptodactylus latinasus exposed under laboratory conditions to the imazetapir based-formulation Pivot® H (10.59% Imazetapir) mimicking two possible real acute scenarios. Both exposure scenarios considered were the runoff simulation (scenario1: 10 mg/L) and the direct spraying application (scenario2: 1000 mg/L).Different endpoints were evaluated at several ecotoxicological levels after 48 and 96 h of exposure including individual (biometric indices and behavior alterations), histological (liver pigmentation and tissue alterations), biochemical (catalase, glutathione system and cholinesterase activities) and genotoxic effects (induction of micronuclei and nuclear abnormalities). The exposure to Pivot® H during 48 h, induced inhibition of the glutathione-S-transferase activity in scenario1 and an increase of hepatic tissue alterations and acetyl-cholinesterase levels in scenario2. After 96 h, we demonstrated that imazetapir formulation induced a decrease in melanin and hemosiderin, an increase in catalase activity and induction of micronuclei in scenario1 while in scenario2 there was a decrease in the hepatosomatic index, and an increase in liver alterations and melanin reduction. The multivariate analysis allows to correlate biomarkers at the same level in exposed specimens. Accordingly, we conclude that populations of L. latinasus could be at risk after real scenarios of exposure to pesticides corroborating that the species is a good model for ecotoxicological studies in the region.

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Section: Introductionmentioning

confidence: 99%

Multiple Level Effects of Imazethapyr on Leptodactylus latinasus (Anura) Adult Frogs

Iglesias

Fanali

Franco‐Belussi

et al. 2021

Arch Environ Contam Toxicol

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“…This substance appears to have adversely effects on reproductive tissues and hormone levels (Fattahi, 2015). Reimche at al. (2015) in study of the imazethapyr in zooplankton community, show that there is a selecrive impact on zooplankton community.…”

Section: Resultsmentioning

confidence: 99%

Pesticide Residues in The Formoso River: A Threat To Biodiversity In The Cerrado of The Tocantins State, Brazil

Guarda

Gualberto

Mendes

et al. 2022

Preprint

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The biodiversity of the Cerrado has been threatened by the increase in agricultural production in the state of Tocantins and by the increased use of pesticides. This region of Formoso do Araguaia, it is home to around 1,825 indigenous people and is one of the largest indigenous territories in the state of Tocantins This work investigates the levels of pesticide residues in different environmental compartments (soil, sediment and water samples) of the Formoso River in the state of Tocantins, Brazil. The presence of pesticides of the imidazolinones and strobirulins classes by UHPLC-MS/MS were analyzed from April 2018 to February 2019, which helped in an evaluation of the impacts of pesticides on the biodiversity of the place of study. After analysis, five active principles (azoxystrobin, fenamidone, imazethapyr, tricyclazole, and trifloxystrobin) were detected in the water matrix, two active principles (azoxystrobin and tricyclazole) in the soil matrix, but no active principle was detected in the sediment matrix. In the region of the Parque do Araguaia Indigenous Lands, people who use this water for cultivation, hygiene and food, which is worrying, are exposed to these substances.

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“…13,30,31 The reported half-lives of fipronil varied across matrices, for example, water (13.2 and 87.9 days at pH 10 and 7, respectively), 32 soil (1.5−342 days), 33−35 and sediment (anaerobic, 4.6−18.5 days; facultative, 25−91 days). 36 The pH values in paddy fields were from weakly acidic (pH 6.5) 37 to alkaline (pH 9.11), 38 and alkaline conditions may accelerate the degradation of fipronil.…”

Section: ■ Discussionmentioning

confidence: 99%

Legacy and Current-Use Insecticides in Agricultural Sediments from South China: Impact of Application Pattern on Occurrence and Risk

Wei

Zhang

et al. 2017

J. Agric. Food Chem.

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Legacy and current-use insecticides were analyzed in sediments collected from a typical rice-planting region in South China. Total concentrations of insecticides varied from 1.63 to 775 ng g with mean and median values of 67.0 and 11.5 ng g, respectively. Pyrethroids predominated pesticide composition (31.7%), followed by organophosphates (23.0%) and fiproles (20.8%). Sediment risk analysis showed that pyrethroids, fiproles, and abamectin posed significant risk to benthic invertebrates in one-third of sediments. Different distributions of pyrethroids and organophosphates in urban and agricultural areas were consistent with their application patterns, whereas legacy organochlorine pesticides showed no region-specific distribution because of rapid transition of land use pattern from agricultural to urban areas. Likely illegal use of pyrethroids and fipronil caused serious ecological risks in agricultural waterways. Pyrethroids and fipronil were restricted to use in paddy fields, but their occurrence and risk in agricultural waterways were high, calling for better measures to regulate the illegal use of insecticides.

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Imazethapyr and imazapic, bispyribac-sodium and penoxsulam: Zooplankton and dissipation in subtropical rice paddy water

Cited by 23 publications

References 34 publications

Multiple Level Effects of Imazethapyr on Leptodactylus latinasus (Anura) Adult Frogs

Multiple Level Effects of Imazethapyr on Leptodactylus latinasus (Anura) Adult Frogs

Pesticide Residues in The Formoso River: A Threat To Biodiversity In The Cerrado of The Tocantins State, Brazil

Legacy and Current-Use Insecticides in Agricultural Sediments from South China: Impact of Application Pattern on Occurrence and Risk

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