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Cholinesterase (ChE) response and related mortality among birds fed ChE inhibitors

  • J. Larry Ludke
  • Elwood F. Hill
  • Michael P. Dieter
Article

Abstract

Patterns of mortality and inhibition of brain and plasma ChE in birds treated with ChE inhibitors were studied in an attempt to determine the validity of using ChE activity as a monitoring and diagnostic technique. Analysis of brain ChE activity proved to be reliable for diagnosing and monitoring effects of selected ChE inhibitors in birds. Brain ChE inhibition exceeding 20% indicated exposure, and inhibition greater than 50% was sufficient for diagnosing cause of death. Individuals that died from dietary exposure to parathion or carbofuran had brain ChE activities below 55% of normal; although individuals could survive with brain ChE activity lower than 50%. Problems associated with collection, storage, and analysis of tissues for ChE activity are discussed.

Keywords

Diagnostic Technique Cholinesterase Parathion Carbofuran Related Mortality 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York Inc. 1975

Authors and Affiliations

  • J. Larry Ludke
    • 1
  • Elwood F. Hill
    • 1
  • Michael P. Dieter
    • 1
  1. 1.U. S. Department of the Interior Bureau of Sport Fisheries and WildlifePatuxent Wildlife Research CenterLaurel

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