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Diseases of Aquatic Organisms

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DAO 135:211-226 (2019)  -  DOI: https://doi.org/10.3354/dao03393

Opportunistic phaeohyphomycoses in wild saffron cod Eleginus gracilis from waterways of Norton Sound and Toksook Bay, Alaska, USA

Theodore R. Meyers1,*, Jayde Ferguson2, Collette Bentz2, Tamara Burton2

1Department of Fish and Game, Commercial Fisheries Division, Juneau Fish Pathology Laboratory, PO Box 115526, Juneau, Alaska 99811-5526, USA
2Department of Fish and Game, Commercial Fisheries Division, Anchorage Fish Pathology Laboratory, 333 Raspberry Road, Anchorage, Alaska, 99518, USA
*Corresponding author:

ABSTRACT: These case reports describe locally invasive black pigmented mycotic infections of the skin and gills of saffron cod Eleginus gracilis associated with 8 different opportunistic ascomycete fungi: Alternaria sp., Cladosporium herbarum, Chaetomium globosum, Cadophora luteo-olivacea, Penicillium sp., Phoma herbarum, Pseudophacidium ledi and Valsa sordida. These fungi were isolated on conventional media, identified according to morphological structures and confirmed by genetic sequencing. Several of these fungi are primary plant pathogens as well as opportunistic human pathogens in immunocompromised individuals. Several have also been described as causing opportunistic infections of fish. This case material represents the first report of C. luteo-olivacea, C. globosum, P. ledi and V. sordida as likely opportunistic fish pathogens in Alaskan watersheds of Norton Sound and south in Toksook Bay and possibly elsewhere.


KEY WORDS: Black mycoses · Saffron cod · Ascomycete · Cadophora · Chaetomium · Pseudophacidium · Valsa


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Cite this article as: Meyers TR, Ferguson J, Bentz C, Burton T (2019) Opportunistic phaeohyphomycoses in wild saffron cod Eleginus gracilis from waterways of Norton Sound and Toksook Bay, Alaska, USA. Dis Aquat Org 135:211-226. https://doi.org/10.3354/dao03393

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