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Marine Biology

, Volume 51, Issue 1, pp 41–46 | Cite as

Modèle de détection rapide des effets sublétaux des polluants: Modification des taux d'amylase et de trypsine d'Artemia salina contaminées par le cuivre ou le zinc

  • A. M. Alayse-Danet
  • J. L. Charlou
  • M. Jézéquel
  • J. F. Samain
Article

Abstract

Variations in amylase and trypsin activities were studied in Artemia salina L. exposed to concentrations of copper or zinc which impair their growth. Disturbances in the levels of these enzymes were compared with decreases in growth rate. Amylase activity was disturbed within 24 h by 2 ppm copper and within 72 h by 5 ppm zinc. Inversely, trypsin activity was disturbed within 24 h by 5 ppm zinc and within 72 h by 2 ppm copper. Disturbances at the enzymatic level occurred more rapidly than decreases in growth rate, except for trypsin in A. salina polluted by copper. In the latter case, both were affected simultaneously. The possibility of growth disturbance by modified development of digestive enzymes is discussed. The possible use of enzymatic variation for rapid detection of sublethal effects of pollutants on aquatic organisms in situ is suggested. However, suitable controls would be necessary. Either polluted and unpolluted areas could be compared if their natural ecology were already well known, or reference areas could be monitored before pollutants are introduced.

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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • A. M. Alayse-Danet
    • 1
  • J. L. Charlou
    • 1
  • M. Jézéquel
    • 1
  • J. F. Samain
    • 1
  1. 1.Centre Océanologique de BretagneCentre National pour l'Exploitation des OcéansBrest CédexFrance

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