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Acetylcholinesterase activities in marine snail (Cronia contracta) as a biomarker of neurotoxic contaminants along the Goa coast, West coast of India

DRS at CSIR-National Institute of Oceanography

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Title Acetylcholinesterase activities in marine snail (Cronia contracta) as a biomarker of neurotoxic contaminants along the Goa coast, West coast of India
 
Creator Gaitonde, D.
Sarkar, A.
Kaisary, S.
DeSilva, C.
Dias, C.F.M.
Rao, P.V.S.S.D.P.
Ray, D.
Nagarajan, R.
DeSousa, S.N.
Sarkar, S.
Patill, D.
 
Subject marine molluscs
biomarkers
pollution indicators
lead
cadmium
copper
neurotoxins
tissues
petroleum hydrocarbons
Cronia contracta
 
Description The measurement of acetylcholinesterase (AChE) activity is used worldwide as a biomarker of environmental contamination due to neurotoxic substances. In the present study the AChE activities was measured in marine snails (Cronia contracta) collected seasonally from six sampling sites (viz. Arambol, Anjuna, Dona Paula, Vasco, Velsao and Palolem) along the Goa coast during the pre-monsoon (April, 2004), monsoon (September, 2004) and post-monsoon (November, 2004) periods. The AChE activities in C. contracta showed wide variation along the Goa coast. It was found to be quite high at the reference site, Palolem (23.97, 21.72 and 24.85) throughout the sampling period (April-November, 2004). The AChE activities in C. contracta decreased significantly at Vasco (44.6-52.4% reduction) followed by Dona Paula (24.9-36.2% reduction), Velasao (10.8-35.9% reduction), Arambol (12.6-37.3% reduction) and Anjuna (0-12.7% reduction). Such a significant variation of AChE activities in the marine snail along the Goa coast can be attributed to neurotoxic substances prevalent in those regions. The high concentration of different neurotoxic metals (lead, cadmium, copper, manganese and iron) and petroleum hydrocarbons in the tissues of the marine snails at Dona Paula, Vasco and Velsao clearly substantiate reduction of AChE activities in C. contracta. The in vitro studies on the inhibition of AChE by different metals and PHC indicated that lead, cadmium and copper are the most predominant inhibitor. Based on the AChE activities in C. contracta the sampling sites along the Goa coast can be classified into three major clusters such as highly contaminated sites (Dona Paula, Vasco and Velsao), moderately contaminated sites (Arambol, Anjuna) and least contaminated site (Palolem).
 
Date 2008-02-12T04:35:59Z
2008-02-12T04:35:59Z
2006
 
Type Journal Article
 
Identifier Ecotoxicology, Vol.15; 353-358p.
http://drs.nio.org/drs/handle/2264/830
 
Language en
 
Rights Copyright [2006]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Springer