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Branchiomyces infection in farm‐reared channel catfish, Ictalurus punctatus (Rafinesque)
Author(s) -
Khoo L.,
Leard A. T.,
Waterstrat P. R.,
Jack S. W.,
Camp K. L.
Publication year - 1998
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1046/j.1365-2761.1998.00118.x
Subject(s) - ictalurus , catfish , biology , gill , outbreak , veterinary medicine , fishery , mycosis , fish <actinopterygii> , anatomy , immunology , virology , medicine
Four cases (representing outbreaks in four different ponds on three farms) of branchial mycosis caused by Branchiomyces spp. were identified in channel catfish fry during the summer of 1996. Mortalities ranged from a few hundred to several thousand fish per pond. Significant gross and histopathological findings from these four cases were limited to the gills. All fry examined had fungal mycelia that were mainly but not entirely confined to the base of the primary lamellae and the gill arches. These fungal hyphae were intravascular and occluded vessels in the gill tissues. The present paper describes the fungal characteristics and pathology of branchial mycosis caused by Branchiomyces spp. in channel catfish.