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Int. J. Mol. Sci. 2014, 15(12), 22073-22091; doi:10.3390/ijms151222073

Bioaccumulation of Arsenic Species in Rays from the Northern Adriatic Sea

1
Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, Ljubljana 1000, Slovenia
2
Marine Biology Station, National Institute of Biology, Fornače 41, Piran 6330, Slovenia
*
Author to whom correspondence should be addressed.
Received: 20 October 2014 / Revised: 19 November 2014 / Accepted: 21 November 2014 / Published: 1 December 2014
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Abstract

The difference in arsenic concentration and speciation between benthic (Pteromylaeus bovinus, Myliobatis aquila) and pelagic rays (Pteroplatytrygon violacea) from the northern Adriatic Sea (Gulf of Trieste) in relation to their size (age) was investigated. High arsenic concentrations were found in both groups with tendency of more efficient arsenic accumulation in benthic species, particularly in muscle (32.4 to 362 µg·g−1 of total arsenic). This was attributed to species differences in arsenic access, uptake and retention. In liver most arsenic was present in a form of arsenobetaine, dimethylarsinic acid and arsenoipids, whereas in muscle mainly arsenobetaine was found. The good correlations between total arsenic/arsenobetaine and size reflect the importance of accumulation of arsenobetaine with age. Arsenobetaine is an analogue of glycine betaine, a known osmoregulator in marine animals and both are very abundant in mussels, representing an important source of food for benthic species P. bovinus and M. aquila. View Full-Text
Keywords: Pteromylaeus bovinus; Myliobatis aquila; Pteroplatytrygon violacea; bioaccumulation; biomagnification Pteromylaeus bovinus; Myliobatis aquila; Pteroplatytrygon violacea; bioaccumulation; biomagnification
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Šlejkovec, Z.; Stajnko, A.; Falnoga, I.; Lipej, L.; Mazej, D.; Horvat, M.; Faganeli, J. Bioaccumulation of Arsenic Species in Rays from the Northern Adriatic Sea. Int. J. Mol. Sci. 2014, 15, 22073-22091.

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