DAO 102:87-95 (2012)  -  DOI: https://doi.org/10.3354/dao02535

Massive mortality of Prussian carp Carassius gibelio in the upper Elbe basin associated with herpesviral hematopoietic necrosis (CyHV-2)

Tomáš Daněk1, Lukáš Kalous1,*, Tomáš Veselý2, Eva Krásová1, Stanislava Reschová2, Katerˇina Rylková1, Pavel Kulich2, Miloslav Petrtýl1, Dagmar Pokorová2, Martin Knytl1

1Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 165 21 Praha 6 − Suchdol, Czech Republic
2Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic
*Corresponding author. Email:

ABSTRACT: From 22 May to 10 June 2011 massive mortality of Prussian carp Carassius gibelio was observed in alluvial Lake Řehacˇka close to the Elbe River in the Czech Republic. More than 1400 kg of dead fish were collected and no other fish species were affected. Further molecular and cytogenetic investigation of fish (n = 232) revealed that the Rˇehacˇka population of Prussian carp consisted exclusively of gynogenetic triploid females. The causative agent was identified by means of molecular and electron microscopy as a herpesviral hematopoietic necrosis virus (Cyprinid herpesvirus 2, CyHV-2). This is the first report of CyHV-2 from the Czech Republic and the second finding worldwide of CyHV-2 causing mass mortality of C. gibelio. Some other localities in the upper Elbe River basin where C. gibelio was affected are also noted. We assume that the massive wave of deaths of all female gynogenetic Prussian carp can be attributed to limited genetic variation and the favourable conditions for development of viral disease.


KEY WORDS: Cypriniformes · Herpesvirus · Triploid · Gynogenetic · Mortality


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Cite this article as: Daněk T, Kalous L, Veselý T, Krásová E and others (2012) Massive mortality of Prussian carp Carassius gibelio in the upper Elbe basin associated with herpesviral hematopoietic necrosis (CyHV-2). Dis Aquat Org 102:87-95. https://doi.org/10.3354/dao02535

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