Premium
Effectiveness of copper sulphate, potassium permanganate and peracetic acid to reduce mortality and infestation of Ichthyobodo necator in channel catfish Ictalurus punctatus (Rafinesque 1818)
Author(s) -
Farmer Bradley D,
Straus David L,
Beck Benjamin H,
Mitchell Andrew J,
Freeman Donald,
Meinelt Thomas
Publication year - 2013
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2012.03118.x
Subject(s) - ictalurus , catfish , potassium permanganate , peracetic acid , biology , zoology , infestation , ichthyophthirius multifiliis , potassium , toxicology , fishery , botany , biochemistry , fish <actinopterygii> , chemistry , metallurgy , materials science , inorganic chemistry , hydrogen peroxide
I chthyobodo necator is a single‐celled biflagellate parasite, which in high density can cause significant mortality in young fish. Copper sulphate ( CuSO 4 ), potassium permanganate ( KMnO 4 ) and peracetic acid ( PAA ) were evaluated for effectiveness against ichthyobodosis. Treatments were: untreated control, 2.1 mg L −1 CuSO 4 , 3.0 mg L −1 KMnO 4 , 1.5 mg L −1 PAA and 3.0 mg L −1 PAA , and were applied to flow‐through tanks on three consecutive days. The study was designed to simulate the flow‐through systems utilized in the commercial rearing of juvenile channel catfish ( I ctalurus punctatus ). Mortality was monitored daily to compare survival rate among treatments. Parasite intensity was assessed pre chemical exposure and 20–24 h after the third application to determine effectiveness of the treatment. An assessment was also done 7 days post application to investigate possible reoccurrence. Copper sulphate, KMnO 4 and PAA (3.0 mg L −1 ) significantly reduced the infestation rate of I . necator . Copper sulphate significantly improved the survival of I . necator infested channel catfish after three flow‐through applications compared with the untreated control. The 3.0 mg L −1 PAA resulted in significantly lower survival than the untreated control, the 1.5 mg L −1 PAA and the KMnO 4 were not statistically different from the untreated control.