Izvorni znanstveni članak
https://doi.org/10.46419/cvj.57.4.1
Analysis of chromium distribution in tissues of bottlenose, striped and Risso’s dolphins from the Croatian Adriatic over a 20-year period
Maja Đokić
orcid.org/0000-0002-3071-6208
; Laboratory for the Determination of Residues, Department of Veterinary Public Health, Croatian Veterinary Institute, 10000 Zagreb, Croatia
Nina Bilandžić
orcid.org/0000-0002-0009-5367
; Laboratory for the Determination of Residues, Department of Veterinary Public Health, Croatian Veterinary Institute, 10000 Zagreb, Croatia
Miroslav Benić
orcid.org/0000-0001-7594-520X
; Laboratory for Mastitis and Row Milk Quality, Department of Bacteriology and Parasitology, Croatian Veterinary Institute, 10000 Zagreb, Croatia
Tomislav Bolanča
; Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, 10000 Zagreb, Croatia
Tomislav Gomerčić
orcid.org/0000-0001-7232-9428
; Department of Veterinary Biology, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia
Martina Đuras
; Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia
Marija Sedak
; Laboratory for the Determination of Residues, Department of Veterinary Public Health, Croatian Veterinary Institute, 10000 Zagreb, Croatia
*
* Dopisni autor.
Sažetak
This study aimed to quantify chromium (Cr) concentrations in tissues of 190 individuals of three odontocete species—159 bottlenose dolphin (Tursiops truncatus), 25 striped dolphin (Stenella coeruleoalba), and six Risso’s dolphin (Grampus griseus)—stranded along the Croatian coast of the Adriatic Sea between 1995 and 2013. Chromium concentrations were measured in liver, muscle, kidney, skin, lung, spleen, and fat using inductively coupled plasma optical emission spectrometry. Significant interspecific differences in Cr concentrations were observed in the kidney, liver, and spleen, suggesting dietary habits as a major factor in chromium accumulation. Risso’s dolphins exhibited the highest Cr levels, likely due to the higher Cr concentrations in cephalopods that make up the basis of their diet. Chromium concentrations exceeding 1 mg/kg wet weight were found in only 16 tissue samples—15 from bottlenose dolphin and one from striped dolphin—indicating a low overall prevalence of elevated Cr levels. Regression analysis revealed no significant correlation between Cr concentrations and body mass, age, sex, or geographic location. However, a significant decline in Cr levels over the study period was observed across all tissues.
Ključne riječi
chromium; Tursiops truncatus; Stenella coeruleoalba; Grampus griseus; tissues; Adriatic Sea
Hrčak ID:
347016
URI
Datum izdavanja:
15.7.2026.
Posjeta: 0 *