Naslov
Assessment of metal exposure in industrially/agriculturally impacted freshwater ecosystem using amphipod Gammarus fossarum Koch as a bioindicator

Autori
Gulin, Vesna ; Filipović Marijić, Vlatka ; Dragun, Zrinka ; Sertić Perić, Mirela ; Matoničkin Kepčija, Renata ; Velki, Mirna ; Ečimović, Sandra ; Hackenberger Kutuzović, Branimir ; Erk, Marijana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
3rd Central European Symposium for Aquatic Macroinvertebrate Research : Book of Abstracts / Grabowski, Michal - Łódź, 2018, 40-40

Skup
3rd Central European Symposium for Aquatic Macroinvertebrate Research (CESAMIR)

Mjesto i datum
Łódź, Poljska, 08.07.2018. - 13.07.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
early indicator ; metallothionein ; acetylcholinesterase ; total water-soluble proteins ; trace-metals

Sažetak
The present study highlights the relevance of the assessment of soluble metal levels in gammarid tissue and its implementation as an early indicator of metal exposure in the freshwater habitats. Physico-chemical water properties in the Sutla River, an industrially/agriculturally influenced catchment in North-Western Croatia, indicated a disturbed ecological status, which also was reflected on the population scale (more than 50 times lower gammarid density in the Sutla River compared to the reference location, Črnomerec Stream). Since total tissue metal concentrations are not fully reliable in the risk assessment of metal exposure (due to internal metal compartmentalization in organisms), metals in the soluble tissue fraction were estimated as indicators of bioavailable metal levels. Among 28 measured metals, significantly higher levels of soluble toxic metals (Al, As, Cd, Pb, Sb, Sn, Sr) were observed in gammarids from the Sutla River compared to Črnomerec Stream. The soluble metal estimates were supplemented with the common multi-biomarker approach: measurement of acetylcholinesterase (AChE) activity, metallothionein (MT) induction and total soluble protein concentrations. Although there was no MT induction, decreased AChE activity and increased total soluble protein concentrations confirmed stressed environmental conditions for biota in the Sutla River. Our results suggest that prior to the observed toxic impact and specific biomarker response, concentrations of soluble metals in organism tissues could be used as an early warning signs of metal impact in freshwater environment.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA