ArticleEnvironmental science and pollution research international2013
Assessment of general condition of fish inhabiting a moderately contaminated aquatic environment.
Article in Environmental science and pollution research international, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 23 citations in OpenAlex.
- Influence of environmental factors on biology and catch composition of Barbonymus schwanenfeldii in a tropical lake, northern Malaysia: implications for conservation planning.Environmental science and pollution research international · 2022Article
- Incidence of morphometry variation, growth alteration, and reproduction performance of the annular sea bream (Diplodus annularis) as effective tools to assess marine contamination: how useful is a multi-biotimarkers approach?Environmental science and pollution research international · 2020Article
- Accumulation of metals relevant for agricultural contamination in gills of European chub (Squalius cephalus).Environmental science and pollution research international · 2016Article
- Distribution of Co, Cu, Fe, Mn, Se, Zn, and Cd among cytosolic proteins of different molecular masses in gills of European chub (Squalius cephalus L.).Environmental science and pollution research international · 2014Article
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
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Abstract
The assessment of general condition of fish in the moderately contaminated aquatic environment was performed on the European chub (Squalius cephalus) caught in September 2009 in the Sutla River in Croatia. Although increases of the contaminants in this river (trace and macro elements, bacteria), as well as physico-chemical changes (decreased oxygen saturation, increased conductivity), were still within the environmentally acceptable limits, their concurrent presence in the river water possibly could have induced stress in aquatic organisms. Several biometric parameters, metallothionein (MT), and total cytosolic protein concentrations in chub liver and gills were determined as indicators of chub condition. Microbiological and parasitological analyses were performed with the aim to evaluate chub predisposition for bacterial bioconcentration and parasitic infections. At upstream river sections with decreased oxygen saturation (~50%), decreased Fulton condition indices were observed (FCI: 0.94 g cm(-3)), whereas gonadosomatic (GSI: 2.4%), hepatosomatic (HSI: 1.31%), and gill indices (1.3%) were increased compared to oxygen rich downstream river sections (dissolved oxygen ~90%; FCI: 1.02 g cm(-3); GSI: 0.6%; HIS: ~1.08%; gill index: 1.0%). Slight increase of MT concentrations in both organs at upstream (gills: 1.67 mg g(-1); liver: 1.63 mg g(-1)) compared to downstream sites (gills: 1.56 mg g(-1); liver: 1.23 mg g(-1)), could not be explained by induction caused by increased metal levels in the river water, but presumably by physiological changes caused by general stress due to low oxygen saturation. In addition, at the sampling site characterized by inorganic and fecal contamination, increased incidence of bacterial bioconcentration in internal organs (liver, spleen, kidney) was observed, as well as decrease of intestinal parasitic infections, which is a common finding for metal-contaminated waters. Based on our results, it could be concluded that even moderate contamination of river water by multiple contaminants could result in unfavourable living conditions and cause detectable stress for aquatic organisms.
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