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Cholinesterase activities in the adductor muscle of the Antarctic scallop Adamussium colbecki

Cholinesterase activities in the adductor muscle of the Antarctic scallop Adamussium colbecki Antarctica is regarded as one of the most pristine parts of the Earth but even this remote ecosystem is affected by contamination and high levels of certain heavy metals, such as cadmium, which may occur naturally in Antarctic waters. The bivalve scallop Adamussium colbecki is considered a key species of Antarctic benthic ecosystems and a sensitive target for bioaccumulation of xenobiotics and metals. Since cholinesterases (ChEs) in the adductor muscle of A. colbecki presumably play a prominent physiological role through regulation of swimming movements, the main aims of this study was to characterize ChE activities in adductor muscle of A. colbecki and to investigate their sensitivity to organophosphate pesticides and heavy metals. The results suggest that an acetylcholinesterase-like enzyme in the adductor muscle of the scallop has low sensitivity to organophosphates but was significantly inhibited by exposure to cadmium. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Antarctic Science Cambridge University Press

Cholinesterase activities in the adductor muscle of the Antarctic scallop Adamussium colbecki

Antarctic Science , Volume 18 (1): 8 – Mar 23, 2006
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Publisher
Cambridge University Press
Copyright
© Antarctic Science Ltd 2006
ISSN
1365-2079
eISSN
0954-1020
DOI
10.1017/S0954102006000022
Publisher site
See Article on Publisher Site

Abstract

Antarctica is regarded as one of the most pristine parts of the Earth but even this remote ecosystem is affected by contamination and high levels of certain heavy metals, such as cadmium, which may occur naturally in Antarctic waters. The bivalve scallop Adamussium colbecki is considered a key species of Antarctic benthic ecosystems and a sensitive target for bioaccumulation of xenobiotics and metals. Since cholinesterases (ChEs) in the adductor muscle of A. colbecki presumably play a prominent physiological role through regulation of swimming movements, the main aims of this study was to characterize ChE activities in adductor muscle of A. colbecki and to investigate their sensitivity to organophosphate pesticides and heavy metals. The results suggest that an acetylcholinesterase-like enzyme in the adductor muscle of the scallop has low sensitivity to organophosphates but was significantly inhibited by exposure to cadmium.

Journal

Antarctic Science – Cambridge University Press

Published: Mar 23, 2006

Keywords: aquatic pollutants; benthos; bivalve; Cd; ChE; DFP

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