TRANSMISSION ELECTRON MICROSCOPIC STUDY ON THE EFFECT OF TOLTRAZURIL ON TURBOT EXPERIMENTALLY INFECTED BY Enteromyxum scophthalmi

摘要

We found ultrastructural differences between toltrazuril treated and untreated fish. Our results suggest that oral administration of toltrazuril caused damage to the developmental stages of Enteromyxum scophthalmi, however the dura was not be able to avoid clinical disease. In the future, different doses and methods of administration should be tested.