Naslov
Seasonal variability of the cytosolic metal and protein concentrations in three tissues of European chub of the same age

Autori
Dragun, Zrinka ; Filipović Marijić, Vlatka ; Podrug, Marijana ; Raspor, Biserka

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

Izvornik
Comparative Biochemistry and Physiology A 151S / Mommsen, T.P. ; Walsh, P.J. - Amsterdam : Elsevier, 2008

Skup
25th Congress of the new European Society of Comparative Biochemistry and Physiology - New challenges in integrative physiology and biochemistry: From molecular mechanism to environmental adaptation

Mjesto i datum
Ravenna, Italija, 07.09.2008. - 11.09.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
chub; gills; liver; intestine; metallothioneins; metals

Sažetak
The concentrations of metallothioneins (MT), total proteins (TP) and metals (Zn, Cu, Fe, Mn and Cd) in the cytosol of gills, liver and intestine of European chub (Squalius cephalus) were compared in the fish specimens of the same age (2 and 3 year old) caught in the spring and autumn. The most pronounced seasonal variability in both age groups was observed in the gills, with the higher levels of all measured cellular parameters in the spring period. Increased concentrations in the spring period were also recorded for TP, Fe and Mn in the intestine and for MT and Mn in the liver tissue of the same fish specimens. The spring period coincides with the chub spawning season (April to June). Additionally, the increased food availability leads to enhanced feeding and metabolic rates in the spring, which evidently caused the increase of several cellular parameters in the selected chub tissues. To achieve more reliable assessment of fish exposure to metals and their bioavailability from water, the appropriate target organ should be carefully selected for metal and MT determination, taking into consideration their variability caused by natural stressors.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA