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Hydrobiologia

, Volume 101, Issue 3, pp 215–221 | Cite as

Toxicité aiguë d'un fongicide dithiocarbamate, le thirame, chez des larves de l'ephémère Cloeon dipterum: effets de divers paramètres

  • Jacqueline Seugé
  • Roger Bluzat
Article

Abstract

Acute toxicity and degradation of an aqueous suspension of Thiram were studied in Cloeon dipterum. Lethal concentrations for 50% of the larvae (LC 50) after 24 to 96 h of exposure and thresholds were calculated. LC 50 varied from 0.39 to 1.92 mg·l−1 according to the time and the physiological state of the larvae. It was demonstrated that:

  • the sensitivity of the larvae increased with the time during which they were kept in the laboratory;

  • while the toxicity of the aqueous suspension (1 mg·l−1) of Thiram decreased with time, another toxic product was formed.

Keywords

dipteran larvae Cloeon dipterum Thiram fungicide acute toxicity physiological state degradation 

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Copyright information

© Dr W. Junk Publishers 1983

Authors and Affiliations

  • Jacqueline Seugé
    • 1
  • Roger Bluzat
    • 1
  1. 1.Laboratoire de ZoologieCentre Scientifique d'Orsay de l'Université de Paris-SudOrsay CedexFrance

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