Publications by authors named "P M Peltzer"
Toxicity of pesticide cocktails in amphibian larvae: understanding the impact of agricultural activity on aquatic ecosystems in the Salado River basin, Argentina.
Drug Chem Toxicol
October 2024
Article Synopsis
- Aquatic communities are facing increased exposure to harmful pesticide mixtures due to agricultural activities, prompting a study on the toxicity of eight specific pesticides on South American common toad larvae.
- The study used computational methods to predict the formation of these pesticide mixtures and assessed their effects on both early-developing and premetamorphic larvae, revealing high mortality rates and various health issues.
- Findings indicate significant ecological risks for aquatic organisms from these mixtures, highlighting the importance of considering such cocktail effects in ecosystem health assessments.
Microplastics, considered emerging environmental contaminants resulting from plastic degradation, are discovered in diverse aquatic ecosystems and can be unintentionally ingested by fish. Therefore, it is essential to characterize their interaction with other contaminants, such as agrochemicals, in aquatic environments. This study aimed to assess histological, enzymatic, and genotoxic biomarkers in juvenile pacú (Piaractus mesopotamicus) exposed to polyethylene (PE) microplastic particles and the herbicide atrazine, individually or combined, for 15 days.
View Article and Find Full Text PDFThe aim of this study was to evaluate the acute lethality and chronic sublethal effects of lithium (Li) on tadpoles as model organisms. First a 96 h toxicity assay was performed by exposing tadpoles to Li concentrations from 44.08 to 412.
View Article and Find Full Text PDFArticle Synopsis
- - The study examined the impact of agro-industrial wastewater, particularly from dairy activities, on the water quality and aquatic life in Santa Fe province, Argentina, focusing on the Los Troncos Stream and the San Carlos Channel.
- - Results indicated significant levels of pollution, with high concentrations of pesticides and contaminants leading to severe mortality in aquatic organisms, particularly turtles, and causing ecological stress in tadpoles exposed to the wastewater.
- - The findings highlight a critical environmental crisis, showing that the water quality in the affected areas exceeds safe limits for aquatic life, emphasizing the urgent need for effective waste management solutions in agro-industrial practices.
Horticulture poses a significant ecological risk, as agrochemicals are applied more frequently and in larger quantities per unit of production compared to extensive crop fields. The native amphibian Rhinella arenarum serves as a reliable bioindicator of environmental health. This study aimed to assess genocytotoxic damage and demographic life history traits of R.
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