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Effet du cadmium sur l'activité de l'alpha-amylase chez Mytilus galloprovincialis = Effect of cadmium on alpha-amylase activity in Mytilus galloprovincialis
Essedaoui, A.; Sif, J.; Kerambrun, P. (1998). Effet du cadmium sur l'activité de l'alpha-amylase chez Mytilus galloprovincialis = Effect of cadmium on alpha-amylase activity in Mytilus galloprovincialis. Mar. Life 8(1-2): 51-61
In: Marine Life = Vie Marine. Institut Océanographique Paul Ricard: Marseille. ISSN 1168-3430, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Essedaoui, A.
  • Sif, J.
  • Kerambrun, P.

Abstract
    Variation of alpha-amylase activity was studied in function of pollution level in Mytilus galloprovincialis. This study was carried out on the digestive gland on monthly samples coming from stations located near the industrial outfall of Morocco-phosphor III and IV factories, at Jorf-Lasfar and on samples made at reference station, as well as in digestive gland mussels experimentally contaminated with cadmium chlorate. At the same time, measurements of cadmium content in the tissues of the digestive gland were carried out, and, in sea-water, main spatio-temporal fluctuations of temperature and pH were analysed. Amylase activity showed seasonal variations with a maximum in summer-autumn period at the reference station. Amylase activity decreased in mussels coming from polluted stations and seemed to be inversely proportional to cadmium accumulation in tissues, particularly in winter. Similar, results obtained from experimental mussels showed that this activity decreased when concentration and duration of exposure to Cd increased.

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