Assessment of coastal marine pollution in Galicia (NW Iberian Peninsula); metal concentrations in seawater, sediments and mussels (Mytilus galloprovincialis) versus embryo–larval bioassays using Paracentrotus lividus and Ciona intestinalis

Beiras, Ricardo; Bellas, Juan; Fernández, Narciso de Gabriel; Lorenzo, José Ignacio; Cobelo-Garcı́a, Antonio

doi:10.1016/s0141-1136(03)00042-4

Cited by 147 publications

(64 citation statements)

References 33 publications

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“…The presence of organic complexing ligands such as citrate (that decrease the free metal concentration) clearly influences the cobalt and nickel toxicity to bacteria, as is the case with Pseudomonas aeruginosa [6] or Bacillus subtilis [23]. These toxicity models were, however, established and verified for natural waters and higher organisms such as freshwater algae Chlorella kesslerii [15], urchin larvae [27] or mussels (Mytilus galloprovincialis) [2]. Thus far, this type of models has never been applied to the anaerobic consortia present in biofilms or granules from wastewater treatment reactors.…”

Section: Introductionmentioning

confidence: 99%

Cobalt toxicity in anaerobic granular sludge: influence of chemical speciation

Bartacek

Fermoso

Baldó-Urrutia

et al. 2008

J Ind Microbiol Biotechnol

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The influence of cobalt speciation on the toxicity of cobalt to methylotrophic methanogenesis in anaerobic granular sludge was investigated. The cobalt speciation was studied with three different media that contained varying concentrations of complexing ligands [carbonates, phosphates and ethylenediaminetetraacetic acid (EDTA)]. Three fractions (nominal added, dissolved and free) of cobalt were determined in the liquid media and were correlated with data from batch toxicity experiments. The average concentration of cobalt that was required for 50% inhibition of methanogenic activity (IC 50 ) for free Co 2? in the three sets of measurements was 13 lmol/L with a standard deviation of 22% and a similarity of 72% between the data obtained in the three different media for the range of cobalt concentrations investigated. The standard deviation of the IC 50 for the other two fractions was much higher, i.e. 85 and 144% for the added cobalt and dissolved cobalt, respectively, and the similarity was almost 0% for both fractions. Complexation (and precipitation) with EDTA, phosphates and carbonates was shown to decrease the toxicity of cobalt on methylotrophic methanogenesis. The free cobalt concentration is proposed to be the key parameter to correlate with cobalt toxicity. Thus, the toxicity of cobalt to granular sludge can be estimated based on the equilibrium-free cobalt concentration.

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Section: Introductionmentioning

confidence: 99%

Cobalt toxicity in anaerobic granular sludge: influence of chemical speciation

Bartacek

Fermoso

Baldó-Urrutia

et al. 2008

J Ind Microbiol Biotechnol

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“…In the present study, we tested the effects of marine cyanobacterial extracts on the embryogenesis of these invertebrate species. Sea urchin and bivalve embryos have been recognized as valuable tools for toxicity assessment ( His et al, 1999;Beiras et al, 2003) and, as embryos and larvae are more sensitive to toxicants in general than adults of the same species, they represent critical life stages useful for toxicity assays ( Martin et al, 1981).…”

Section: Introductionmentioning

confidence: 99%

Toxicity assessment of crude and partially purified extracts of marine Synechocystis and Synechococcus cyanobacterial strains in marine invertebrates

Martíns

Fernández

Beiras

et al. 2007

Toxicon

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Among the Cyanoprokaryota, the genera Synechocystis and Synechococcus have rarely been studied with respect to potential toxicity. This is particularly true with marine environments where studies about the toxicity of cyanobacteria are restricted to filamentous forms at the warmer temperate and tropical regions and also to filamentous forms at cold seas such as the Baltic Sea. In this study, we describe the effects of cyanobacterial strains of the Synechocystis and Synechococcus genera isolated from the marine coast of Portugal, on marine invertebrates. Crude and partially purified extracts at a concentration of 100 mg/ml of freeze-dried material of the marine strains were tested for acute toxicity in nauplii of the brine shrimp Artemia salina, in the rotifer Brachionus plicatillis and in embryos of the sea urchin Paracentrotus lividus and the mussel Mytilus galloprovincialis. The cyanobacterial extracts, especially the crude extract, had an impact on A. salina nauplii. No significant toxic effects were registered against the rotifer. A negative impact of all strains was recorded on the embryonic development of the sea urchin, with toxic effects resulting in an inhibition of embryogenesis or development of smaller larvae. To the mussel embryos, the effects of cyanobacterial extracts resulted in a complete inhibition of embryogenesis. The results of all assays indicate that Synechocystis and Synechococcus marine strains contained toxic compounds to marine invertebrates.

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“…This is because sediment has been reported as sinks (Adams et al, 1992;Rowlatt and Lovell, 1994;Mucha et al, 2003). Thus, it is preferred for monitoring environment pollution of aquatic systems because it exhibit reduced variation spatially and temporally (Beiras et al, 2003;Caccia et al, 2003;Pekey, 2006).…”

Section: Sediment Quality Parametersmentioning

confidence: 99%

Seasonal and spatial variations analysis of pollution status of Ondo coastal environment Nigeria using principal component analysis

Agunbiade¹,

Olu-Owolabi

Adebowale

2010

Geochem. J.

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The variation in environmental quality of Ondo coast between seasons and sites were evaluated using principal component analysis (PCA). Seventeen metals were analysed in water and sediments with five anionic components further evaluated in water samples. The dry season concentrations of parameter and their degree of variation are higher than that of wet season. PCA of sediments revealed four parameter clusters and five clusters for water based on related sources of input, biogeochemical reactions or effects of physical conditions which are useful means of managing pollution when understood. The concentrations of sediment parameters were higher while their variations are narrower than for water parameters making sediment a veritable tool in coastal pollution monitoring. Mg is the most abundant metal in the sediment while Na and chloride are the most prominent in water. The incursion of saline water therefore plays a major role in the dispersion of pollutants and the water-sediment chemistry of the coast. The spatial variation based on the sediment parameters are much conservative than the water-based. Overall, site 9 and 10 were distinct from the others while sites 1, 2, 3 related perfectly playing important roles in the sourcing and chemistry of pollutants in the coast.

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Assessment of coastal marine pollution in Galicia (NW Iberian Peninsula); metal concentrations in seawater, sediments and mussels (Mytilus galloprovincialis) versus embryo–larval bioassays using Paracentrotus lividus and Ciona intestinalis

Cited by 147 publications

References 33 publications

Cobalt toxicity in anaerobic granular sludge: influence of chemical speciation

Cobalt toxicity in anaerobic granular sludge: influence of chemical speciation

Toxicity assessment of crude and partially purified extracts of marine Synechocystis and Synechococcus cyanobacterial strains in marine invertebrates

Seasonal and spatial variations analysis of pollution status of Ondo coastal environment Nigeria using principal component analysis

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