CARP EDEMA VIRUS DISEASE OF KOI Cyprinus carpio koi IN THE CZECH REPUBLIC

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027162%3A_____%2F18%3AN0000135" target="_blank" >RIV/00027162:_____/18:N0000135 - isvavai.cz</a>

Result on the web

<a href="https://www.was.org/Meetings/Default.aspx?code=Aqua18" target="_blank" >https://www.was.org/Meetings/Default.aspx?code=Aqua18</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

CARP EDEMA VIRUS DISEASE OF KOI Cyprinus carpio koi IN THE CZECH REPUBLIC

Original language description

Konference AQUA 2018, Montpellier, France, August 25-29 2018. Carp edema virus (CEV) belonging to the family Poxviridae causes disease, known as koi sleepy disease (KSD), which is characterized by extremely lethargic behaviour, overproduction of mucus on the skin and gills, enophthalmia, gill damage and generalized edema. The disease is associated with mortality rates up to 80 % in koi and common carp (Cyprinus carpio) aquaculture, resulting in serious economic losses in several European and Asian countries and in the United States. In this study, we report the first data supporting the presence of CEV in koi in the Czech Republic. Koi carp were collected from 5 different locations in the Czech Republic during the years 2013 ‑ 2017. Based on the clinical signs, lethargic behaviour and increased mortality, the fish were examined for the presence of the koi herpes virus (CyHV‑3) infection, spring viremia of carp virus (SVCV) infection and CEV infection. All koi showed negative PCR results for CyHV-3 and SVCV detection. The presence of CEV in all tested samples of koi was confirmed by PCR followed by sequence analysis. All but one CEV isolate were found to be virus variants from genogroup IIa, which is mainly detected in diseased koi. In one case, we found a virus variant from genogroup I, which often occurs in common carp. This suggests that koi infected with CEV from genogroup I might recently have had contact with carp suffering from clinical KSD. The results indicate that the prevalence and spread of this disease should be carefully monitored in order to minimize the economic risk to both carp and koi industries.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40301 - Veterinary science

Project

<a href="/en/project/QK1710114" target="_blank" >QK1710114: New viral diseases of common carp - diagnosis and prevention</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů