Application of acanthocephalans as bioindicators of metal exposure in the karst Krka River influenced by industrial and municipal wastewaters (CROSBI ID 673096)
Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Filipović Marijić, Vlatka ; Mijošek, Tatjana ; Dragun, Zrinka ; Krasnići, Nesrete ; Ivanković, Dušica ; Erk, Marijana
engleski
Application of acanthocephalans as bioindicators of metal exposure in the karst Krka River influenced by industrial and municipal wastewaters
Naturally present trace metal concentrations in rivers are low, even extremely low in karst rivers, which make them very sensitive to anthropogenic influence. Krka River is a typical karst river in the Republic of Croatia whose lower part was proclaimed National Park due to its exceptional natural beauty. The aim of the present study was to evaluate metal exposure in the Krka River few kilometres upstream of the park border, in the area threatened by industrial and municipal wastewaters, by application of bioindicator organisms: fish brown trout (Salmo trutta Linnaeus, 1758), gammarids (Gammarus fossarum Koch, 1836) and fish intestinal parasites, acanthocephalans (Dentitruncus truttae Sinzar, 1955). During the last few decades, acanthocephalans were recognized as potential indicators of metal exposure in the aquatic environment due to their effective metal accumulation, which is order of magnitude higher compared to commonly used bioindicator organisms (Sures et al., 2017). Concentrations of 16 microelements and 4 macroelements were measured in digested fish intestine, gammarids and acanthocephalans from the Krka River source as a reference site and downstream of the wastewater impact. Prior to metal measurement by high resolution inductively coupled plasma-mass spectrometer (HR ICP-MS), samples were acid digested in a drying oven at 85°C for 3.5 hours using concentrated HNO3 and H2O2. Acanthocephalan prevalence in fish from the reference site was 100% and from the pollution impacted area 80%, while the mean intensity of infection per fish was around 34 at both locations. More effective accumulation of most metals was found in acanthocephalans compared to fish and gammarids at both locations, especially of toxic Cd, Pb, Sr and Tl, which average levels were 4-39 times higher in acanthocephalans. Metal concentrations were mostly higher in organisms from the wastewater impacted area, confirming anthropogenic influence and useful contribution of acanthocephalans as sensitive bioindicators of bioavailable metal levels.
parasites ; metals ; biomonitoring ; bioindicatorsacanthocephalans ; bioindicators ; wastewaters ; metal exposure
Sažetak je objavljen i u zborniku sažetaka i u CC časopisu (Filipović Marijić et al. (2018): Application of acanthocephalans as bioindicators of metal exposure in the karst Krka River influenced by industrial and municipal wastewaters. In: Update on selected topics in acanthocephalan parasites research. Helminthologia, 55(4): 350 – 361. DOI: 10.2478/helm-2018-0023)
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Podaci o prilogu
362-362.
2018.
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objavljeno
10.2478/helm-2018-0023
Podaci o matičnoj publikaciji
Helminthologia
0440-6605
1336-9083
Podaci o skupu
9th Acanthocephalan Workshop
pozvano predavanje
09.09.2018-13.09.2018
Stará Lesná, Slovačka
Povezanost rada
Biologija, Interdisciplinarne prirodne znanosti