Assessment of general condition of fish inhabiting a moderately contaminated aquatic environment

Dragun, Zrinka; Marijić, Vlatka Filipović; Kapetanović, Damir; Valić, Damir; Smrzlić, Irena Vardić; Krasnići, Nesrete; Strižak, Željka; Kurtović, Božidar; Teskeredžić, Emin; Raspor, Biserka

doi:10.1007/s11356-013-1463-x

Cited by 20 publications

(15 citation statements)

References 65 publications

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Section: Association With Fish Conditionmentioning

confidence: 94%

“…In our previous paper, we have pointed out that the changes of these three indices were at least partially a consequence of changes in water saturation with oxygen (Dragun et al 2013b). Both GSI and gill index were increased at two upstream sites, which were characterized by low oxygen saturation (dissolved oxygen 51-54 %, (dissolved oxygen 87-94 %, Table 1) (Dragun et al 2011(Dragun et al , 2013b. Therefore, the increased or decreased metal bioaccumulation associated to changes in FCI, GSI or gill index could have occurred due to changes in fish physiology, but also due to changes in metal speciation in the river water as a result of varying water oxygenations.…”

Section: Association With Fish Conditionmentioning

confidence: 94%

“…The map of study area with marked sampling sites is presented in Fig. 1 and was previously published by Dragun et al (2012Dragun et al ( , 2013b. Detailed physicochemical and microbiological characterization of the river water quality at the selected sampling sites in September/October of 2009 was also previously published (Dragun et al 2011).…”

Section: Study Period and Areamentioning

confidence: 99%

“…For microscopic identification of sex, a section of gonad tissue from each fish was placed on a glass microscope slide, and the slides were viewed under ×40 and ×100 amplifications using optical microscope BH-2 (Olympus). Basic characteristics of sampled fish are presented in Table 2, whereas detailed analysis of spatial variability of biometric parameters was published previously (Dragun et al 2013b). …”

Section: Fish Samplingmentioning

confidence: 99%

“…To our knowledge, we have provided the only data on metal concentrations in soluble fractions of several organs (gills, liver and intestine) of European chub, which are indispensable for monitoring of metal contamination in European freshwaters . And, specifically, we have so far provided the information for only six elements in soluble gill fractions, namely for Cd, Cu, Fe, Mn and Zn in chub from the Sava River (Dragun et al 2007(Dragun et al , 2009) and for Cd, Cu, Pb, and Zn in chub from the Sutla River (Dragun et al 2012(Dragun et al , 2013b.…”

Section: Introductionmentioning

confidence: 99%

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Accumulation of metals relevant for agricultural contamination in gills of European chub (Squalius cephalus)

Dragun

Tepić²,

Krasnići

et al. 2016

Environ Sci Pollut Res

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The study of metal bioaccumulation in the gills of European chub (Squalius cephalus) was conducted in September 2009 at the medium-sized rural river Sutla, characterized by agricultural and municipal type of water contamination. The concentration ranges were established for the first time in the soluble, metabolically available fractions of chub gills for 12 metals, which are environmentally extremely relevant and yet only seldom studied, as follows in a decreasing order: K, 225-895 mg L(-1); Na, 78-366 mg L(-1); Ca, 19-62 mg L(-1); Mg, 13-47 mg L(-1); Rb, 164-1762 μg L(-1); Sr, 24-81 μg L(-1); Ba, 13-67 μg L(-1); Mo, 1.3-16 μg L(-1); Co, 0.7-2.7 μg L(-1); Li, 0.4-2.2 μg L(-1); Cs, 0.2-1.9 μg L(-1); and V, 0.1-1.8 μg L(-1). The concentrations of Fe (1.6-6.4 mg L(-1)) and Mn (16-69 μg L(-1)) were also determined and were in agreement with previous reports. By application of general linear modelling, the influence of different abiotic (metal exposure level) and biotic parameters (fish sex, age, size and condition) on metal bioaccumulation was tested. It was established that bioaccumulation of many metals in fish depended on various physiological conditions, wherein Ba could be singled out as metal exhibiting the strongest association with one of biotic parameters, being significantly higher in smaller fish. However, it was also undoubtedly demonstrated that the concentrations of three metals can be applied as reliable indicators of metal exposure even in the conditions of low or moderate water contamination, such as observed in the Sutla River, and those were nonessential elements Li and Cs and essential element Fe. The results of our study present an important contribution to maintenance of high ecological status of European freshwaters, through enrichment of knowledge on the bioaccumulation of various metals in gills of European chub as frequently applied bioindicator species in monitoring of water pollution.

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Section: Association With Fish Conditionmentioning

confidence: 94%