The environmental condition of an estuarine ecosystem disturbed by pesticides

Rodrigues, Elsa T.; Alpendurada, M.F.; Guimarães, Ana Tereza Bittencourt; Avó, Romeu; Ferreira, Bárbara Roque; Pardal, Miguel Ângelo

doi:10.1007/s11356-019-05751-5

Cited by 14 publications

(18 citation statements)

References 45 publications

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“…Paraquat has been detected at levels up to 0.134 mg/L in global surface waters, which encompasses the LC 10 values found in this study [66]. The literature on the presence of penconazole in surface waters is scarce, making it difficult to know the environmental relevance of our detected levels of toxicity [67]. Triadimefon has been detected within U.S. surface waters up to 0.2 µg/L, which is lower than the levels of toxicity detected for the LC 50 and LC 10 values in this study [68].…”

Section: Resultssupporting

confidence: 52%

Salinity Alters Toxicity of Commonly Used Pesticides in a Model Euryhaline Fish Species (Menidia beryllina)

Hutton

Romain

Pedersen

et al. 2021

Toxics

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Changing salinity in estuaries due to sea level rise and altered rainfall patterns, as a result of climate change, has the potential to influence the interactions of aquatic pollutants as well as to alter their toxicity. From a chemical property point of view, ionic concentration can increase the octanol–water partition coefficient and thus decrease the water solubility of a compound. Biologically, organism physiology and enzyme metabolism are also altered at different salinities with implications for drug metabolism and toxic effects. This highlights the need to understand the influence of salinity on pesticide toxicity when assessing risk to estuarine and marine fishes, particularly considering that climate change is predicted to alter salinity regimes globally and many risk assessments and regulatory decisions are made using freshwater studies. Therefore, we exposed the Inland Silverside (Menidia beryllina) at an early life stage to seven commonly used pesticides at two salinities relevant to estuarine waters (5 PSU and 15 PSU). Triadimefon was the only compound to show a statistically significant increase in toxicity at the 15 PSU LC50. However, all compounds showed a decrease in LC50 values at the higher salinity, and all but one showed a decrease in the LC10 value. Many organisms rely on estuaries as nurseries and increased toxicity at higher salinities may mean that organisms in critical life stages of development are at risk of experiencing adverse, toxic effects. The differences in toxicity demonstrated here have important implications for organisms living within estuarine and marine ecosystems in the Anthropocene as climate change alters estuarine salinity regimes globally.

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Section: Resultssupporting

confidence: 52%

Salinity Alters Toxicity of Commonly Used Pesticides in a Model Euryhaline Fish Species (Menidia beryllina)

Hutton

Romain

Pedersen

et al. 2021

Toxics

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“…In the same study, the pesticides were quantified typically during summer concurring with the pesticide usage period and no severe contamination occurred during a flood event that was expected to promote the runoff of pesticides from the adjacent agricultural areas (Rodrigues et al 2018a). The quantified residues of pesticides were also more frequent during the summer and thus in the pesticide application period in another spatial and temporal monitoring program performed in 2017 in the Sado estuary (Rodrigues et al 2019a). That report suggested a long-term aquatic exposure for five herbicides, namely alachlor, bentazon, metobromuron, metribuzin and triclopyr, which were determined in the water samples before and after the production season (Rodrigues et al 2019a).…”

Section: Monitoring Of Emerging Contaminants In Portuguese Riversmentioning

confidence: 90%

“…That report suggested a long-term aquatic exposure for five herbicides, namely alachlor, bentazon, metobromuron, metribuzin and triclopyr, which were determined in the water samples before and after the production season (Rodrigues et al 2019a). Regarding the potential adverse effects of the application of agricultural pesticides on the aquatic organisms in this estuary, it was not found any severe effect, even considering the potential mixture effect of pesticides (Rodrigues et al 2019a).…”

Section: Monitoring Of Emerging Contaminants In Portuguese Riversmentioning

confidence: 99%

Emerging Contaminants: Analysis, Aquatic Compartments and Water Pollution

Morin‐Crini¹,

Lichtfouse²,

Liu³

et al. 2021

Emerging Contaminants Vol. 1

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Over the past two decades, the presence of so-called emerging contaminants in various environmental compartments around the world, such as water, sediments, soils and atmosphere, and in a wide variety of consumer products has become a major concern for society, public health authorities, industry (namely food industry and water sector) and the agricultural sector. Some of these substances are endocrine disruptors and others are proven carcinogens and mutagens. In particular,

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“…Contamination, due to multiclass pesticides, has been reported in different countries, indeed recently, e.g., in surface water samples [24], and sediments [25]. In Portugal, several studies about the presence of these priority pesticides, resulting from the different sources, were reported in food [26,27], soils [28], sediments [29][30][31][32], marine samples [33], rivers waters [34][35][36][37][38], and Small Public Water Supply Systems [39]. Despite the resulting contamination from the last decades, there are only a few studies on the quantification and monitoring of known and suspected EDPs in Portuguese surface water samples.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Selected Known or Suspected Endocrine-Disrupting Pesticides in Portuguese Surface Waters Using SPME-GC-IT/MS

et al. 2021

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A multiresidue analytical methodology based on a solid-phase microextraction (SPME), followed by gas chromatography-ion trap mass spectrometry (GC–IT/MS), has been developed for trace analysis of 20 known or suspected endocrine-disrupting pesticides. The SPME conditions are optimized considering several key parameters to obtain the maximum sensitivity. After the optimization, the method validation is performed, and the limits of detection (ranged from 2–150 ng/L) and the coefficient of determination (above 0.990) of studied compounds are determined for all the analytes. A robust sampling of twenty sampling points of surface water samples from the north and center of Portugal is performed, and the validated methodology is applied. In total, 20 compounds from four chemical families (13 organochlorine, 1 organophosphorus, 2 dicarboximide, and 4 pyrethroids) are studied, and the pesticides most frequently detected are eight organochlorine pesticides (α-, β-HCHs, lindane, HCB, o,p′-DDT, p,p′-DDE, p,p′-DDD, α-endosulfan), cypermethrin, and vinclozolin.

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The environmental condition of an estuarine ecosystem disturbed by pesticides

Cited by 14 publications

References 45 publications

Salinity Alters Toxicity of Commonly Used Pesticides in a Model Euryhaline Fish Species (Menidia beryllina)

Salinity Alters Toxicity of Commonly Used Pesticides in a Model Euryhaline Fish Species (Menidia beryllina)

Emerging Contaminants: Analysis, Aquatic Compartments and Water Pollution

Occurrence of Selected Known or Suspected Endocrine-Disrupting Pesticides in Portuguese Surface Waters Using SPME-GC-IT/MS

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