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Phaeohyphomycosis due to Veronaea botryosa in cultured white sturgeon ( Acipenser transmontanus Richardson) from California USA during 2006 to 2015
Author(s) -
Groff Joseph M.,
Mok Mai Y.,
Kubiski Steven V.,
Michel Adam O.,
CortésHinojosa Galaxia A.,
Byrne Barbara A.,
Wickes Brian L.,
Scott Weber E.,
Campbell Lori A,
Waltzek Thomas B.
Publication year - 2021
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 - 10.1111/jfd.13308
Subject(s) - sturgeon , biology , zoology , pathological , acipenser , fishery , fish <actinopterygii> , pathology , medicine
Infection with Veronaea botryosa can result in rare cutaneous or disseminated, granulomatous to pyogranulomatous phaeohyphomycosis in humans, although disease due to the fungus has also been reported in non‐mammalian vertebrates. This report documents disease due to V . botryosa in captive, juvenile to subadult or young adult white sturgeon ( Acipenser transmontanus Richardson) from California USA and complements a previous report of the disease in captive Siberian sturgeon ( Acipenser baerii ) from Florida USA. Pathological examinations revealed granulomatous to pyogranulomatous inflammation of multiple organs. Isolates of the fungal agent were phenotypically consistent with V . botryosa, and molecular analyses of the D1/D2 region of the fungal 28S rRNA gene and the internal transcribed spacer (ITS) region located between the fungal 18S and 28S rRNA genes confirmed the aetiologic agent as V . botryosa . The disease in captive sturgeon results in a considerable economic encumbrance to the producer due to the loss of the cumulative financial resources invested in the production of older subadult to young adult sturgeon.