Spatio‐temporal analysis of cyprinid herpesvirus 3 genetic diversity at a local scale
Identifieur interne : 000145 ( France/Analysis ); précédent : 000144; suivant : 000146Spatio‐temporal analysis of cyprinid herpesvirus 3 genetic diversity at a local scale
Auteurs : J-C Avarre [France] ; A. Santika [Indonésie] ; A. Bentenni [France] ; Z. Zainun [Indonésie] ; J-P Madeira [France] ; M. Maskur [Indonésie] ; L. Bigarré [France] ; D. Caruso [France]Source :
- Journal of Fish Diseases [ 0140-7775 ] ; 2012-10.
Abstract
Cyprinid herpesvirus 3 (CyHV‐3), the causative agent of koi herpesvirus disease, is a major threat for carp populations in many countries worldwide, including Indonesia. It has been shown that many genotypes circulate worldwide, all highly related to one of the two known lineages U/I and J. In this study, we evaluated the spatial and temporal distribution of CyHV‐3 strains in a small enzootic area, the lake of Cirata (West Java, Indonesia). Of the 365 samples analysed, from clinical or asymptomatic fish, 244 were found positive for CyHV‐3, suggesting a high occurrence of the virus. Genotyping of these viral specimens with a range of molecular markers revealed the presence of numerous haplotypes in the host population, all related to the J lineage. In single individuals, mixed‐genotype infections occurred at high frequency. The present results demonstrate that polymorphic molecular markers are suitable to monitor the genetic evolution of a viral population in an enzootic area.
Url:
DOI: 10.1111/j.1365-2761.2012.01404.x
Affiliations:
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<front><div type="abstract">Cyprinid herpesvirus 3 (CyHV‐3), the causative agent of koi herpesvirus disease, is a major threat for carp populations in many countries worldwide, including Indonesia. It has been shown that many genotypes circulate worldwide, all highly related to one of the two known lineages U/I and J. In this study, we evaluated the spatial and temporal distribution of CyHV‐3 strains in a small enzootic area, the lake of Cirata (West Java, Indonesia). Of the 365 samples analysed, from clinical or asymptomatic fish, 244 were found positive for CyHV‐3, suggesting a high occurrence of the virus. Genotyping of these viral specimens with a range of molecular markers revealed the presence of numerous haplotypes in the host population, all related to the J lineage. In single individuals, mixed‐genotype infections occurred at high frequency. The present results demonstrate that polymorphic molecular markers are suitable to monitor the genetic evolution of a viral population in an enzootic area.</div>
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