Treatment of trichodiniasis in eel ( Anguilla anguilla) reared in recirculation systems in Denmark: alternatives to formaldehyde

Treatment of trichodiniasis in recirculation eel farms using formalin (37%) has been found insufficient. We have screened 30 different chemical substances for efficacy against natural infections with trichodinids ( Trichodina jadranica) on skin and gills of eels. The following substances showed high...

Full description

Saved in:
Bibliographic Details
Published in:Aquaculture 2000-06, Vol.186 (3), p.221-231
Main Authors: Madsen, Hans C.K, Buchmann, Kurt, Mellergaard, Stig
Format: Article
Language:English
Subjects:
Anguilla anguilla
Animal aquaculture
Animal productions
Aquaculture
Aquatic life
Biological and medical sciences
Brackish
Eel
Freshwater
Fundamental and applied biological sciences. Psychology
Infections
Marine
Marine biology
Pisciculture
Recirculation aquaculture
Treatment
Trichodina jadranica
Trichodiniasis
Vertebrate aquaculture
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Treatment of trichodiniasis in recirculation eel farms using formalin (37%) has been found insufficient. We have screened 30 different chemical substances for efficacy against natural infections with trichodinids ( Trichodina jadranica) on skin and gills of eels. The following substances showed high parasiticidal effect: acriflavin (25 ppm), bithionol (0.1 ppm), chloramine T (50 ppm), Detarox AP® (45 ppm), malachite green (1 ppm), raw garlic (200 ppm), potassium permanganate (20 ppm) and Virkon PF® vet. (20 ppm). Preliminary screening revealed that the anthelmintic, bithionol, and the decomposable disinfectants Detarox AP and Virkon PF® vet. were potential therapeutics and these were tested on infected eel stocks in recirculation production units. The following treatments showed a high parasiticidal effect: bithionol at 0.1 ppm in a recirculation system including the biofilters; Detarox AP® (45 ppm) in recirculation systems with the biofilters temporarily isolated for 1 h and Virkon PF® vet. (40 ppm; 25 ppm at start supplemented with 15 ppm 1 h later) in rearing tanks temporarily isolated from recirculation systems for 3 h.
ISSN:0044-8486
1873-5622
DOI:10.1016/S0044-8486(99)00379-8