THE EFFECT OF PERACETIC ACID IN THE TREATMENT OF GYRODACTYLOSIS IN RAINBOW TROUT

Liliana Athanasopoulos, N. Patriche, Magdalena Tenciu, Elena Mocanu, Ira Chihaia, Veta Nistor

Abstract
   Gyrodactylosisis a parasitic disease caused by species of genus Gyrodactylus, affecting most species of freshwater fish, characterized by the destruction of skin or rarely the gills.
   One of the ectoparasitosis that may cause an increase of mortalities in rainbow trout, is the tegumentary Gyrodactylosis.
   This paper studies the effect of administrating peracetic acid in the disinfestation of fish parasitized with Gyrodactylus derjavini Mikailov, 1975.
   The chemical substance used for treatment, Divosan Forte (15% peracetic acid), at a dose of 750 ml per day and after seven days of treatment, will achieve a maximum level of efficiency registered by a complete disinfestation.
   The correlation between the water chemistry during treatment period and the degree of infestation in trout, shows that the latter varies inversely with the organic substance and directly proportional to the pH of the water.
   Successful results advise the use of peracetic acid for treating Gyrodactylosis, in trout, with precautions and recommendations resulting from the presented study.

Key words: Gyrodactylosis, peracetic acid, rainbow trout