Studies on ecological risk assessment of pesticide using species sensitivity distribution

Nagai, Takashi

doi:10.1584/jpestics.j17-03

Cited by 13 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is a method for evaluating risk as an exceedance probability of environmental concentration to toxicity of aquatic organisms by considering the uncertainty of toxicity and pesticide exposure. For example, Japan's pesticide registration criteria based on ecological risk assessment are set by Japan's Ministry of Environment under the pesticide regulation law [38]. Under the risk assessment scheme, acute toxicity tests are conducted for fish (Cyprinus carpio), daphnids (Daphnia magna), and alga (P. subcapitata) and then the acute EC 50 or LC 50 divided by an uncertainty factor that considers the species sensitivity difference (default 10, but depends on the data for fish and crustaceans and 1 for algae).…”

Section: Discussionmentioning

confidence: 99%

Cytotoxicity, Oxidative Stress and Biochemical Alterations Induced by Traditional and Nanoform of Pendimethalin in Freshwater Alga Chlorella vulgaris

Noaman¹,

Abdel-Halim²,

El-Din³

et al. 2020

NanoWorld

View full text Add to dashboard Cite

The roles of pendimethalin and its nano-form to induce oxidative stress, osmolytes, biochemical alterations and cytotoxic effect in algal cells of Chlorella vulgaris after exposure to sub-lethal concentrations were carried out. The data indicated that, 96-h EC 50 values were 20 and 19 ppb for pendimethalin and its nano-form, respectively. Three concentration levels (0.1EC 50 , 0.025EC 50 and EC 50 ) of the examined herbicide decreased the algal pigments (Chlorophyll a and b), but increased carotenoid contents compared with the control group. Biomolecules such as protein, carbohydrates, proline and sucrose of the algal cells significantly increased for the all treatments compared with the control groups. Similarly, malondialdehyde (MDA), some enzymes such as catalase (CAT), superoxide dismutase (SOD) and ascorbate peroxidase (APX) showed significant increases for the all treatments. On the other hand, ultrastructural investigation of the herbicide-treated algal cells showed significant changes in their organelles in comparing with the untreated cells through transmission electron microscope (TEM) images. From all findings, it was obtained that the nano-pendimethalin was more potential toxic than the traditional form to induce adverse effects on the freshwater alga. Thus, biosafety procedures must be followed on non-target species before decision for nano-herbicide practices.

show abstract

Section: Discussionmentioning

confidence: 99%

Cytotoxicity, Oxidative Stress and Biochemical Alterations Induced by Traditional and Nanoform of Pendimethalin in Freshwater Alga Chlorella vulgaris

Noaman¹,

Abdel-Halim²,

El-Din³

et al. 2020

NanoWorld

View full text Add to dashboard Cite

show abstract

“…The species sensitivity distribution (SSD) method was used to assess the ecological risk of the pesticides detected in Xingkai Lake; it combines the toxicity data from multiple single species to predict the concentrations affecting a given number of species in a community [ 31 , 32 ]. It is widely used to evaluate the ecological risk of a pollutant or pollutants to organisms [ 33 ]. This study was carried out according to the following steps: (1) toxicity data acquisition; (2) SSD curve fitting; (3) the calculation of the potential affected fraction (PAF); and (4) the ecological risk assessment of single compounds.…”

Section: Methodsmentioning

confidence: 99%

Distribution Characteristics and Risk Assessment of 57 Pesticides in Farmland Soil and the Surrounding Water

Wang,

Liu

et al. 2024

Toxics

View full text Add to dashboard Cite

To investigate the effect of pesticide use on surface water, the concentration and distribution characteristics of 57 pesticides and 3 degradation products were analyzed in the farmland soil and surface water in the Xingkai Lake area, including water from paddy fields, drainages and the Xingkai Lake, in Heilongjiang Province, China. Forty-three pesticides and three degradation products were detected in farmland soil. In dry field (corn and soybean field) soil, the main detected pesticides were atrazine and acetochlor with mean concentrations of 26.09 ng·g−1 and 49.08 ng·g−1, respectively. In paddy field soil, oxadiazon, mefenacet and chlorpyrifos were the main detected pesticides with mean concentrations of 14.32 ng·g−1, 78.60 ng·g−1 and 20.03 ng·g−1, respectively. In the surrounding water, including water from paddy fields, drainages and Xingkai Lake, the total concentrations of contaminants detected in the water samples ranged from 71.19 ng·L−1 to 10,145.76 ng·L−1. Of the three sampling periods, the mean concentration of contaminants in the water exhibited its peak during the vegetative period. In the analysis of the drainage water, the primary pesticides detected were atrazine, acetochlor and buprofezin with mean concentrations of 354.83 ng·L−1, 109.09 ng·L−1 and 254.56 ng·L−1, respectively. Atrazine, simetryn, buprofezin and isoprothiolane were the main pesticides detected in Xingkai Lake water, with the mean concentrations of 222.35 ng·L−1, 112.76 ng·L−1, 301.87 ng·L−1 and 138.02 ng·L−1, respectively. The concentrations of contaminants could be correlated with drainage, Da Xingkai Lake and Xiao Xingkai Lake water (ρ > 0.8) suggested that the source of these contaminants in drainage and Xingkai Lake water could be the same. The maximum potentially affected fraction (PAF) values of atrazine, chlorpyrifos and prometryn were higher than 5% in Xingkai Lake water, resulting in high ecological risks.

show abstract

“…Using SSD dataset, it is available to estimate a ratio of species impacted by pollution chemicals. A ratio of species impacted is recognized as an indicator of an impact for biodiversity (species diversity) and useful for quantitative risk assessment of pesticides [ 193 ]. To preserve species diversity in the aquatic ecosystem, HC5 (5% Hazardous Concentration), which means an equivalent chemical concentration that 5% of species would be impacted (95% of species would be preserved), has been defined as no-effect concentrations [ 194 , 195 , 196 ] and has been considered reasonable for environmental safety in case of pesticides [ 197 , 198 , 199 , 200 ].…”

Section: Can Immunotoxicological Studies Assess the Effects Of Chemicals On Ecosystems?mentioning

confidence: 99%

Ecological Risks Due to Immunotoxicological Effects on Aquatic Organisms

Kataoka

Kashiwada

2021

IJMS

View full text Add to dashboard Cite

The immunotoxic effects of some anthropogenic pollutants on aquatic organisms are among the causes of concern over the presence of these pollutants in the marine environment. The immune system is part of an organism’s biological defense necessarily for homeostasis. Thus, the immunotoxicological impacts on aquatic organisms are important to understand the effects of pollutant chemicals in the aquatic ecosystem. When aquatic organisms are exposed to pollutant chemicals with immunotoxicity, it results in poor health. In addition, aquatic organisms are exposed to pathogenic bacteria, viruses, parasites, and fungi. Exposure to pollutant chemicals has reportedly caused aquatic organisms to show various immunotoxic symptoms such as histological changes of lymphoid tissue, changes of immune functionality and the distribution of immune cells, and changes in the resistance of organisms to infection by pathogens. Alterations of immune systems by contaminants can therefore lead to the deaths of individual organisms, increase the general risk of infections by pathogens, and probably decrease the populations of some species. This review introduced the immunotoxicological impact of pollutant chemicals in aquatic organisms, including invertebrates, fish, amphibians, and marine mammals; described typical biomarkers used in aquatic immunotoxicological studies; and then, discussed the current issues on ecological risk assessment and how to address ecological risk assessment through immunotoxicology. Moreover, the usefulness of the population growth rate to estimate the immunotoxicological impact of pollution chemicals was proposed.

show abstract

Studies on ecological risk assessment of pesticide using species sensitivity distribution

Cited by 13 publications

References 23 publications

Cytotoxicity, Oxidative Stress and Biochemical Alterations Induced by Traditional and Nanoform of Pendimethalin in Freshwater Alga Chlorella vulgaris

Cytotoxicity, Oxidative Stress and Biochemical Alterations Induced by Traditional and Nanoform of Pendimethalin in Freshwater Alga Chlorella vulgaris

Distribution Characteristics and Risk Assessment of 57 Pesticides in Farmland Soil and the Surrounding Water

Ecological Risks Due to Immunotoxicological Effects on Aquatic Organisms

Contact Info

Product

Resources

About