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DAO
Diseases of Aquatic Organisms

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DAO 135:169-174 (2019)  -  DOI: https://doi.org/10.3354/dao03392

NOTE
Mycobacterium gordonae infecting redclaw crayfish Cherax quadricarinatus

Nadav Davidovich1,*, Tobia Pretto2, Shlomo E. Blum3, Zina Baider3, Rona Grossman4, Hasia Kaidar-Shwartz4, Zeev Dveyrin4, Efrat Rorman4

1Israeli Veterinary Services, Bet Dagan 5025001, Israel
2Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro, Padova, Italy
3Division of Bacteriology, Kimron Veterinary Institute, Bet Dagan 5025001, Israel
4National Mycobacterium Reference Centre, National Public Health Laboratory Tel Aviv, Ministry of Health, Tel Aviv 6108401, Israel
*Corresponding author:

ABSTRACT: The redclaw crayfish Cherax quadricarinatus (von Martens, 1868) is one of the most commonly exploited freshwater crayfish species worldwide. Redclaw crayfish are susceptible to a number of pathogens but none have been linked to widespread epizootics. Mycobacterial infections have been sporadically reported in crayfish. In the case described, histopathology and bacterial identification confirmed an opportunistic infection caused by Mycobacterium gordonae in a hatchery of C. quadricarinatus in Israel. Intranuclear inclusion bodies, recorded in cells of the tubular epithelium of the hepatopancreas by histopathology, indicate a co-infection with a viral agent, referable to C. quadricarinatus bacilliform virus (CqBV). To the best of our knowledge this is the first description of mycobacteriosis in redclaw crayfish.


KEY WORDS: Mycobacterium gordonae · Mycobacteriosis · Redclaw crayfish · Cherax quadricarinatus · CqBV


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Cite this article as: Davidovich N, Pretto T, Blum SE, Baider Z and others (2019) Mycobacterium gordonae infecting redclaw crayfish Cherax quadricarinatus. Dis Aquat Org 135:169-174. https://doi.org/10.3354/dao03392

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