The Impact of Chemical Compounds on Benthic Invertebrates from the Danube and Danube Delta Systems

Stoica, Cătălina; Gheorghe, Ștefania; Lucaciu, Eugenia Irina; Stanescu, Elena; Păun, Iuliana; Niculescu, Liliana Daniela

doi:10.1080/15320383.2014.870529

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…4). Ostracods tolerance to pollutants was also reported in previous studies on benthic invertebrate [18,34,35]. Considering that Heterocypris incongruens prays the small organisms like Daphnia magna, the negative effects of biocide obtained for Daphnis could induce imbalances in ostracods communities [36].…”

Section: Toxicity Effects Induced To Heterocypris Incongruenssupporting

confidence: 54%

“…Among the invertebrates, Daphnia magna crustaceans have been the most used indicator of the effects of xenobiotics on primary consumers in freshwater ecosystems [13][14][15][16]. Also, is known that benthic invertebrates are more susceptible to dissolved and undissolved pollutants than pelagic biota, and may serve as an environmental imbalance long term marker [17][18][19][20].…”

mentioning

confidence: 99%

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Ecotoxicity of Biocides (Chemical Disinfectants) - Lethal and Sublethal Effects on Non-target Organisms

Gheorghe¹,

Stoica²,

Lucaciu³

et al. 2019

Rev. Chim.

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The aim of this paper was to assess de ecotoxicity effects of four biocides, used as chemical disinfectants for swimming pool water treatment, on non-target organisms such as Daphnia magna and Heterocypris incongruens crustaceans. The tests showed a significant difference of sensitivity between species. The biocides, at the recommended disinfection doses, induced a very toxic or toxic effect on Daphnia magna, based on their mortality percentage. On the contrary, the observed ostracods lethal effects were generally less than 50% mortality and no significant growth inhibitions were observed. Overall, the ostracods had a higher tolerance to subacute doses, including disinfection doses of 20 mg/L (potassium mono persulfate), 5 mg/L (sodium dichloroisocyanurate), 8 mg/L (trichloroisocyanuric acid 90%) and 7 mg/L (trichloroisocyanuric acid 87-88%). In the context of a continuous biocides market expansion, the paper highlighted that our research proposed testing methods to obtain fast and accurate ecotoxicity data for a sustainable biocide production / authorization and also for an environmental hazard assessment.

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Section: Toxicity Effects Induced To Heterocypris Incongruenssupporting

confidence: 54%

mentioning

confidence: 99%

Ecotoxicity of Biocides (Chemical Disinfectants) - Lethal and Sublethal Effects on Non-target Organisms

Gheorghe¹,

Stoica²,

Lucaciu³

et al. 2019

Rev. Chim.

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“…Various freshwater organisms, such as primary producers—green algae ( Selenastrum capricornutum )—as well as consumers (planktonic and benthic crustaceans— Daphnia magna —and Heterocypris incongruens , rotifers— Brachionus calyciflorus ) and bacteria, were applied to analyze the toxic effects of chemicals such as surfactants, pharmaceuticals, pesticides, nitroderivates and heavy metals under Regulation (EC) no. 1907/2006-Registration, Evaluation and Authorization of Chemicals (REACH) [ 18 ], wastewater and sewage sludge from wastewater treatment plants from Romania [ 19 ], Danube and Danube Delta freshwater quality [ 20 , 21 ] or even mine water [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Pathogenic Bacteria Strains to Treated Mine Water

Stoica

Dinu

Lucaciu

et al. 2022

IJERPH

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Mine water as a result of meteoric and/or underground water’s contact with tailings and underground workings could have an elevated content of metals associated with sulfate, often acidic, due to the bio-oxidation of sulfides. When entering aquatic ecosystems, the mine water can cause significant changes in the species’ trophic levels, therefore a treatment is required to adjust the alkalinity and to remove the heavy metals and metalloids. The conventional mine water treatment removes metals, but in many cases it does not reduce the sulfate content. This paper aimed to predict the impact of conventionally treated mine water on the receiving river by assessing the genotoxic activity on an engineered Escherichia coli and by evaluating the toxic effects generated on two Gram-negative bacterial strains, Pseudomonas aeruginosa and Escherichia coli. Although the main chemical impact is the severe increases of calcium and sulfate concentrations, no significant genotoxic characteristics were detected on the Escherichia coli strain and on the cell-viability with a positive survival rate higher than 80%. Pseudomonas aeruginosa was more resistant than Escherichia coli in the presence of 1890 mg SO42−/L. This paper reveals different sensitivities and adaptabilities of pathogenic bacteria to high concentrations of sulfates in mine waters.

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“…Higher temperature and drought (concentrating pollutants) may influence (bio)transformation, O 2 uptake, and elevate toxicity. 159 This determines parametrization, representability, and implementability of models. We may optimize via identifying “hotspot” locations, e.g., bridges/harbors.…”

Section: Discussionmentioning

confidence: 99%

“…More direct data for NH 4 /PO 4 may help to solidify the relationships. ,, Large, uniform water bodies are less susceptible to pressures from point releases of chemicals (dilution). Higher temperature and drought (concentrating pollutants) may influence (bio)transformation, O 2 uptake, and elevate toxicity . This determines parametrization, representability, and implementability of models.…”

Section: Discussionmentioning

confidence: 99%

Bioconcentration of Organotin Cations during Molting Inhibits Heterocypris incongruens Growth

Nolte

Cooman

Vink

et al. 2020

Environ. Sci. Technol.

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The densely populated North Sea region encompasses catchments of rivers such as Scheldt and Meuse. Herein, agricultural, industrial, and household chemicals are emitted, transported by water, and deposited in sediments, posing ecological risks. Though sediment monitoring is often costly and time-intensive, modeling its toxicity to biota has received little attention. Due to high complexity of interacting variables that induce overall toxicity, monitoring data only sporadically validates current models. Via a range of concepts, we related bio-physicochemical constituents of sediment in Flanders to results from toxicity bioassays performed on the ostracod Heterocypris incongruens . Depending on the water body, we explain up to 90% of the variance in H. incongruens growth. Though variable across Flanders’ main water bodies, organotin cations and ammonia dominate the observed toxicity according to toxic unit (TU) assessments. Approximately 10% relates to testing conditions/setups, species variabilities, incoherently documented pollutant concentrations, and/or bio-physicochemical sediment properties. We elucidated the influence of organotin cations and ammonia relative to other metal(oxides) and biocides. Surprisingly, the tributylin cation appeared ∼1000 times more toxic to H. incongruens as compared to “single-substance” bioassays for similar species. We inferred indirect mixture effects between organotin, ammonia, and phosphate. Via chemical speciation calculations, we observed strong physicochemical and biological interactions between phosphate and organotin cations. These interactions enhance bioconcentration and explain the elevated toxicity of organotin cations. Our study aids water managers and policy makers to interpret monitoring data on a mechanistic basis. As sampled sediments differ, future modeling requires more emphasis on characterizing and parametrizing the interactions between bioassay constituents. We envision that this will aid in bridging the gap between testing in the laboratory and field observations.

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The Impact of Chemical Compounds on Benthic Invertebrates from the Danube and Danube Delta Systems

Cited by 4 publications

References 15 publications

Ecotoxicity of Biocides (Chemical Disinfectants) - Lethal and Sublethal Effects on Non-target Organisms

Ecotoxicity of Biocides (Chemical Disinfectants) - Lethal and Sublethal Effects on Non-target Organisms

Sensitivity of Pathogenic Bacteria Strains to Treated Mine Water

Bioconcentration of Organotin Cations during Molting Inhibits Heterocypris incongruens Growth

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