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Susceptibility of rainbow trout Oncorhynchus mykiss and cherry salmon Oncorhynchus masou against Ichthyophthirius multifiliis  

Kim, Yi-Cheong (Inland Aquaculture Research Center, NFRDI)
Kim, Jin-Do (Inland Aquaculture Research Center, NFRDI)
Jee, Bo-Young (Pathology Division, National Fisheries Research and Development Institute)
Jung, Sung-Hee (Pathology Division, National Fisheries Research and Development Institute)
Seo, Jung-Soo (Pathology Division, National Fisheries Research and Development Institute)
Park, Sung-Woo (Department of Aquatic Life Medicine, Kunsan National University)
Publication Information
Journal of fish pathology / v.22, no.3, 2009 , pp. 193-200 More about this Journal
Abstract
This study was performed to natural infection of Ichthyophthirius multifiliis and mortalities of two fish species were compared at 10${^{\circ}C}$ and 17${^{\circ}C}$ after artificial infection with the parasite. Subsequently compared to motality by the artificial infection with the different parasite orgin of host at 17${^{\circ}C}$ using rainbow trout Oncorhynchus mykiss. The prevalence of Ichthyophthirius multifiliis in cherry salmon was higher than that in rainbow trout during the periods of low temperature but no difference in high temperature season. The parasite was not detectable in culturing water and detritus except May that of density has been high. Susceptibility to the parasite was higher in cherry salmon than in rainbow trout at 10${^{\circ}C}$ of water temperature but no difference between two fish species at 17${^{\circ}C}$. When rainbow trout were infected with Ichthyophthirius multifiliis from rainbow trout and cherry salmon at 17${^{\circ}C}$, there was no difference in death of host. These results suggest that cherry salmon have higher susceptibility to Ichthyophthirius multifiliis than rainbow trout at low temperature.
Keywords
Rainbow trout; Cherry salmon; Ichthyophthirius multifiliis;
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Times Cited By KSCI : 1  (Citation Analysis)
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