Bioaccumulation and biotransformation of arsenic compounds in Hediste diversicolor (Muller 1776) after exposure to spiked sediments

Andrea Gaion, Davide Sartori, Alice Scuderi, Daniele Fattorini
  • Environmental Science and Pollution Research, January 2014, Springer Science + Business Media
  • DOI: 10.1007/s11356-014-2538-z

Arsenic in Hediste diversicolor

What is it about?

This study focused on the exposure of the common ragworm Hediste diversicolor(Müller 1776) to sediments enriched with different arsenic compounds, namely arsenate, dimethyl-arsinate, and arsenobetaine. Speciation analysis was carried out on both the spiked sediments and the exposed polychaetes in order to investigate H. diversicolor capability of arsenic bioaccumulation and biotransformation

Why is it important?

From speciation analysis, Trimethyl-arsine oxide (TMAO) resulted to be the predominant chemical form in the tissues of H. diversicolor exposed to all the spiked sediments. A possible explanation of its biosynthesis is that TMAO could be a chemical compound that increases resistance to As bioaccumulation.

Perspectives

Dr Andrea Gaion
South Devon College

This work provided new biological patterns of bioaccumulation and biotransformation of arsenicals from spiked sediments for the speciesH. diversicolor, and could be the foundation of further investigations on biomarker and toxicity studies about these compounds towards ragworms.

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http://dx.doi.org/10.1007/s11356-014-2538-z

The following have contributed to this page: Dr Andrea Gaion