Ecological Indices for Assessment of the Pollution Level in Water Bodies: a Case Study of the Kilia Delta of the Danube

Bashmakova, I. Kh.

doi:10.1615/hydrobj.v40.i5.70

Hydrob J

2004

DOI: 10.1615/hydrobj.v40.i5.70

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Ecological Indices for Assessment of the Pollution Level in Water Bodies: a Case Study of the Kilia Delta of the Danube

I. Kh. Bashmakova

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Cited by 3 publications

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Comparison of Metal Bioavailability in Frogs from Urban and Rural Sites of Western Ukraine

Stolyar

Loumbourdis

Falfushinska

et al. 2007

Arch Environ Contam Toxicol

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The seasonal and spatial fluctuations of heavy metals in the liver of the frog Rana ridibunda from a river in Western Ukraine were investigated. Liver weight was seen to increase from spring to summer/autumn, most probably as a result of accumulation of metabolites, especially fat and glycogen. The concentrations of the metals found in the liver of the frog was in the order: Fe>Cu approximately Zn>Mn>Cd. For most metals, the highest concentration was recorded in the frogs inhabiting the urban site. The highest level of Cu in the liver was observed in the spring, in the agricultural site, while the highest level of other metals was observed in the summer. The most probable explanation for the high concentration of Cu in the rural site was that in this wetland there were discharge effluents from fungicides with Cu in their formula. Compared to other metals, the bioavailability of Cu was approximately 1000 times higher. The high concentration of Fe rather reflects its fluctuation in the water. Despite its very low concentration in the water (below the limit of detection), Cd was detected in the liver of frogs inhabiting both sites. This is an indication that tissues accumulate Cd, despite the very low concentration detected in the water. This may be an indication of intermittent exposure of frogs to Cd and possibly of other heavy metals.

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Comparison of Metal Bioavailability in Frogs from Urban and Rural Sites of Western Ukraine

Stolyar

Loumbourdis

Falfushinska

et al. 2007

Arch Environ Contam Toxicol

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Multi-Biomarkers Approach in Different Organs of Anodonta cygnea from the Dnister Basin (Ukraine)

Falfushynska

Delahaut

Stolyar

et al. 2008

Arch Environ Contam Toxicol

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The aim of this study was to compare environmental quality in two sites in western Ukraine-rural (R) and urbanized (U)-with the usage of the resident bivalve mollusk Anodonta cygnea. The study was realized during three seasons. The metal uptake and a set of biochemical markers were determined. For each season, Cd and metallothioneins (MTs) contents in the digestive gland and gills of the mollusc were higher at the U site, reflecting its chronic pollution. The oxidative stress in the mollusk was observed at the U site during spring and at the R site during summer and autumn according to the differences in Mn-superoxide dismutase and catalase activities, O (2) (*-) production, lipid peroxidation, and glutathione levels. The elevated vitellogenin-like protein levels in the hemolymph and the ethoxyresorufin-O-deethylase activity in the digestive gland in summer-autumn suggested pollutions by organic substances at the R site. The acetylcholinesterase activity was similar in both groups. The centroid grouping analysis of biomarkers and morphological and water indexes demonstrated the clear differentiation of general response in each group in spring and, at the R site, in summer and autumn but its similarity at the U site in summer and autumn.

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Is trace element concentration correlated to parasite abundance? A case study in a population of the green frog Pelophylax synkl. hispanicus from the Neto River (Calabria, southern Italy)

et al. 2017

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Bioaccumulation of 13 trace elements in the livers of 38 Pelophylax sinkl. hispanicus (Ranidae) and its helminth communities were studied and compared among three sites, each with a different degree of pollution along River Neto (south Italy) during September, 2014. Trace element concentrations in water and liver were measured using inductively coupled plasma mass spectrometry. For most elements, the highest concentration was recorded in the frogs inhabiting the third site, the one with the highest degree of pollution. The trend of trace element concentration in the liver can be represented as follows: Cu > Zn > Mn > Se > Cr. Concentrations of some elements in water and liver samples were significantly different among the three sites and this is evidenced by the bioaccumulation in the frogs. Four species of helminths, all belonging to Nematoda, were found: Rhabdias sp., Oswaldocruzia filiformis (Goeze, 1782), Cosmocerca ornata (Dujarden, 1845), Seuratascaris numidica (Seurat, 1917). The parasite survey presents an important difference of prevalence and average number of helminths in frogs between the three sites. Correlating parasitological and ecotoxicological data showed a strong positive correlation between prevalence and number of parasites with some trace elements such as Mn, Co, Ni, As, Se, and Cd.

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Ecological Indices for Assessment of the Pollution Level in Water Bodies: a Case Study of the Kilia Delta of the Danube

Cited by 3 publications

References 0 publications

Comparison of Metal Bioavailability in Frogs from Urban and Rural Sites of Western Ukraine

Comparison of Metal Bioavailability in Frogs from Urban and Rural Sites of Western Ukraine

Multi-Biomarkers Approach in Different Organs of Anodonta cygnea from the Dnister Basin (Ukraine)

Is trace element concentration correlated to parasite abundance? A case study in a population of the green frog Pelophylax synkl. hispanicus from the Neto River (Calabria, southern Italy)

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