1. Massive mortality of Prussian carp Carassius gibelio in the upper Elbe basin associated with herpesviral hematopoietic necrosis (CyHV-2)
- Author
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Pavel Kulich, Martin Knytl, Tomá Veselý, Dagmar Pokorová, Luká Kalous, Miloslav Petrtýl, Stanislava Reschová, Katerˇina Rylková, Eva Krásová, and Tomá Daněk
- Subjects
Carps ,Necrosis ,Population ,Zoology ,Aquatic Science ,Biology ,Virus ,Fish Diseases ,Rivers ,Herpes virus ,Cypriniformes ,Genetic variation ,medicine ,Animals ,Genetic Predisposition to Disease ,education ,Herpesviridae ,Ecology, Evolution, Behavior and Systematics ,Czech Republic ,Prussian carp ,education.field_of_study ,Ploidies ,Ecology ,Herpesviridae Infections ,biology.organism_classification ,Lakes ,Carassius ,Female ,medicine.symptom - Abstract
From 22 May to 10 June 2011 massive mortality of Prussian carp Carassius gibelio was observed in alluvial Lake R y ehacyka 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 R y ehacyka 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 herpes virus 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. gi be lio. Some other locali- ties 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.
- Published
- 2012
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