Title of article :
Screening of POP pollution by AChE and EROD activities in Zebra mussels from the Italian Great Lakes
Author/Authors :
A. Binelli، نويسنده , , Francesco Ricciardi، نويسنده , , Consuelo Riva، نويسنده , , Alfredo Provini، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
9
From page :
1074
To page :
1082
Abstract :
The increase of ethoxyresorufin dealkylation (EROD) and the inhibition of acetylcholinesterase (AChE) as biomarkers have been commonly used in vertebrates for the persistent organic pollutants (POPs) biomonitoring of aquatic environments, but very few studies have been performed for invertebrates. Previous researches demonstrated the interference due to some chemicals on EROD and AChE activities of the freshwater bivalve Zebra mussel (Dreissena polymorpha) in laboratory and field studies, showing its possible use for the screening of POP effects. We investigated the contamination of the Italian sub-alpine great lakes (Maggiore, Lugano, Como, Iseo, Garda) by the biomarker approach on Zebra mussel specimens collected at 17 sampling sites with different morphometric characteristics and anthropization levels. Results showed a homogeneous contamination of AChE inhibitors in Lake Garda, Maggiore, Como and Iseo with values ranging from 0.5 to 3 nmol/min/mg proteins and with an average inhibition of about 66% to controls. The planar compounds pollution, able to activate the EROD activity, seems higher in some sampling stations of Lake Garda, Como and Iseo (2–4 pmol/min/mg proteins) than that measured in Lake Lugano (1.5–3 pmol/min/mg proteins). On the contrary, the enzyme activity in Lake Maggiore showed an interesting opposite effect of AhR-binding compounds and trace metals. Finally, the possible use of Zebra mussel specimens maintained at laboratory conditions as controls against the selection of the less polluted sampling site is discussed.
Keywords :
EROD , AChE , Dreissena polymorpha , biomarkers , environmental contamination , Italian Great Lakes
Journal title :
Chemosphere
Serial Year :
2005
Journal title :
Chemosphere
Record number :
738350
Link To Document :
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