Cancer incidence and death rates in Argentine rural towns surrounded by pesticide-treated agricultural land

Verzeñassi, Damián; Vallini, Alejandro; Fernández, Facundo; Ferrazini, Lisandro; Lasagna, Marianela; Sosa, Anahí J.; Hough, Guillermo

doi:10.1016/j.cegh.2023.101239

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…Argentina is one of the most agro-industrial productive countries in South America. The Argentinian provinces of Buenos Aires, Entre Ríos, La Pampa, Santa Fe, and C ordoba are the main regions of industrial and crop production (Verzeñassi et al, 2023). The massive and uncontrolled use of pesticides in genetically modified crops is causing contamination in water streams (Ronco et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

High toxicity of agro‐industrial wastewater on aquatic fauna of a South American stream: Mortality of aquatic turtles and amphibian tadpoles as bioindicators of environmental health

Cuzziol Boccioni,

Peltzer,

Attademo

et al. 2024

Water Environment Research

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The aim of this study was to characterize an aquatic system of Santa Fe province (Argentina) receiving wastewater from agro‐industrial activities (mainly dairy) by in situ assessment (fauna mortality, physicochemical, microbiological, and pesticide residues measurement), and ecotoxicity bioassays on amphibian tadpoles. Water and sediment samples were obtained from the Los Troncos Stream (LTS), previous to the confluence with the “San Carlos” drainage channel (SCC), and from the SCC. Biological parameters (mortality and sublethal biomarkers) were used to evaluate ecotoxicity during 10‐day exposure of Rhinella arenarum tadpoles to LTS and SCC samples. Nine pesticides were detected in both LTS and SCC. Chemical and biochemical oxygen demand, ammonia, and coliform count recorded in SCC greatly exceeded limits for aquatic life protection. At SCC and LTS after the confluence with SCC, numerous dying and dead aquatic turtles (Phrynops hilarii) were recorded. In the ecotoxicity assessment, no mortality of tadpoles was observed in LTS treatment, whereas total mortality (100%) was observed in SCC treatments in dilution higher than 50% of water and sediment. For SCC, median lethal concentration and the 95% confidence limits was 18.30% (14.71–22.77) at 24 h; lowest‐observed and no‐observed effect concentrations were 12.5% and 6.25%, respectively. Oxidative stress and neurotoxicity were observed in tadpoles exposed to 25% SCC dilution treatment. In addition, there was a large genotoxic effect (micronuclei test) in all sublethal SCC dilution treatments (6.25%, 12.5%, and 25%). These results alert about the high environmental quality deterioration and high ecotoxicity for aquatic fauna of aquatic ecosystems affected by agro‐industrial wastewater.Practitioner points Great mortality of turtles was observed in a basin with a high load of agro‐industrial wastewater. San Carlos Channel (SCC), where effluents are spilled, is environmentally deteriorated. The water‐sediment matrix of SCC caused 100% lethality in tadpoles. SCC dilutions caused neurotoxicity, oxidative stress, and genotoxicity on tadpoles.

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Section: Introductionmentioning

confidence: 99%