Estudo da toxicidade de metais (zinco e cádmio) sobre Ceriodaphnia dubia, por multivias de exposição e recuperação biológica de descendentes

Carvalho, Marcela Merides; Lira, Vivian Silva; Watanabe, Cláudia Hitomi; Fracácio, Renata

doi:10.1590/s1413-41522017158722

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Yet, Sparling et al [102] refer that in general, aquatic invertebrates are less sensitive to Al toxicity and acidity than fish. Regarding zinc, Carvalho et al [103] report that, even in relatively low concentrations, zinc metals can alter the reproductive pattern of freshwater invertebrates, compromising the aquatic ecosystem and its recovery capacity. Relatively to Ni, Eisler [104] state that its concentrations in unimpaired aquatic ecosystems are typically below 10 µg/L.…”

Section: Current Ecological Status Versus Water Qualitymentioning

confidence: 99%

Current and Future Ecological Status Assessment: A New Holistic Approach for Watershed Management

Fonseca¹,

Santos

Varandas

et al. 2020

Water

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The Paiva River catchment, located in Portugal, integrates the Natura 2000 network of European Union nature protection areas. Resorting to topography, climate and land-use data, a semi-distributed hydrological model (Hydrological Simulation Program–FORTRAN) was run in order to simulate the hydrological cycle of the river and its tributaries. The model was calibrated over a 25-year period and validated within a 31-year period. Its performance was verified by comparing the recorded and simulated daily flows. The values of the Nash–Sutcliffe coefficient of efficiency of 0.95 and 0.76, and coefficient of determination of 0.95 and 0.82, were achieved for calibration and validation, respectively, thus showing a quite satisfactory model performance. Subsequently, the climate change impacts on temperature and precipitation, as well as their extremes, and on the flowrates were also assessed for a future period (2041–2070) under two anthropogenic forcing scenarios (representative concentration pathways 4.5 and 8.5). A procedure for selecting the most relevant metrics for assessing the ecological condition of the Paiva River was developed based upon a set of 52 invertebrate families sampled. Correspondence analyses were carried out for biological datasets (traits/metrics) with physicochemical and land use/land cover matrices separately. Out of all variables, water quality and flow and agriculture land use explained most of the variance observed. The integrated analysis undertaken in the present study is an important advance when compared to previous studies and it provides key information to stakeholders and decision-makers, particularly when planning suitable adaptation measures to cope with changing climates in the forthcoming decades.

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Section: Current Ecological Status Versus Water Qualitymentioning

confidence: 99%

Current and Future Ecological Status Assessment: A New Holistic Approach for Watershed Management

Fonseca¹,

Santos

Varandas

et al. 2020

Water

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show abstract

“…Esses ecossistemas acabam se tornando reservatórios temporários ou finais de diversos poluentes lançados diretamente neles ou então lançados no ar e no solo (MEYBECK;HELMER, 1992). Desta forma, a poluição ambiental, a qual está diretamente relacionada com a diminuição da qualidade da água, influencia negativamente as comunidades aquáticas, tornando-as expostas a diversas combinações de contaminantes (CARVALHO et al, 2018).…”

Section: Introductionunclassified

Avaliação da toxicidade de metais sobre os macroinvertebrados bentônicos tropicais >i<Tramea cophysa>/i< (Libelullidae, Odonata), >i<Chlamydotheca>/i< sp.(Cyprididae, Ostracoda) e >i<Strandesia trispinosa>/i< (Cyprididae, Ostracoda)

Lima¹

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Metals are very important for live beings in general and particularly for men. Some metals are essential to metabolismo in small amounts, but in higher concentrations they become toxic. With the exponencial increase of human population and technological development, metal pollution has become a severe worldwide problem. In this study we investigated the acute toxicity of isolately and in mixture combinations of four common metals on Earth, which are widely used, but well recognized as toxicants to both, terrestrial and aquatic organisms. The acute toxicity of copper, cadmium, mercury and manganese on the survival of tropical invertebrates, Tramea cophysa (Odonata), Chlamydotheca sp. and Strandesia trispinosa (Ostracoda) was evaluated for each metal isolately and as binary mixtures. The survival of this species exposed to a series of concentrations of each metal was evaluated and their sensitivity compared among the species studied and with different species of tropical and temperate regions by constructing Species Sensitivity Distribution curves (SSDs). Manganese was the least toxic compared to other tested metals, possibly due to its immobilization in the cuticle of the test species. T. cophysa was among the species more tolerant to these metals and S. trispinosa among the most sensitive species when compared to other invertebrates used in ecotoxicological tests. From the responses observed in the tests with the isolated compounds it was concluded that the selected species are adequate to toxicity evaluations. For the combinations of the copper sulfate/cadmium chloride compounds the Concentration Addition model was the one which best explained the toxicity on S. trispinosa survival indicating antagonistic adjustment. For copper sulphate and mercury chloride mixture and copper sulphate and manganese sulphate, the Concentration Addition model also best explained the toxicity of S. trispinosa survival, but indicating synergism when copper sulphate predominated in the mixture and antagonism when mercury chloride and manganese sulphate predominated in the mixtures. For the mixture of cadmium chloride andmercury chloride, the model that best explained the effects of the mixture on the survival of S. trispinosa was that of Independent Action, being the best fit to the data given by the synergistic deviation. Other aspects of the toxicity of the evaluated metals were the effects of the exposure of Tramea cophysa and Chlamydotheca sp. to sub-lethal concentrations of the four metals. It was verified that the predation rate of T. cophisa decreased when exposed to increasing concentrations of copper sulphate, cadmium chloride and mercury chloride, whereas for Chamydotheca sp. there was an increase in the rate of predation for most concentrations of the metals tested. Therefore, to understand how metals affect communities, it is necessary to assess the toxicity for each species both acute and chronic. Addressing this challenge in Ecotoxicology is essential for understanding how contaminants can affect from the behavior of in...

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How do different concentrations of aluminum and zinc affect the survival, body size, morphology and immune system of Physalaemus cuvieri (Fitzinger, 1826) tadpole?

de Albuquerque,

Folador,

Müller

et al. 2024

Journal of Toxicology and Environmental Health, Part A

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Estudo da toxicidade de metais (zinco e cádmio) sobre Ceriodaphnia dubia, por multivias de exposição e recuperação biológica de descendentes

Cited by 4 publications

References 16 publications

Current and Future Ecological Status Assessment: A New Holistic Approach for Watershed Management

Current and Future Ecological Status Assessment: A New Holistic Approach for Watershed Management

Avaliação da toxicidade de metais sobre os macroinvertebrados bentônicos tropicais >i<Tramea cophysa>/i< (Libelullidae, Odonata), >i<Chlamydotheca>/i< sp.(Cyprididae, Ostracoda) e >i<Strandesia trispinosa>/i< (Cyprididae, Ostracoda)

How do different concentrations of aluminum and zinc affect the survival, body size, morphology and immune system of Physalaemus cuvieri (Fitzinger, 1826) tadpole?

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