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우리 나라 연근해 자연산 해수 어종에서의 Viral Hemorrhagic Septicemia Virus (VHSV)의 검출

Detection of viral hemorrhagic septicemia virus (VHSV) in wild marine fishes in the coastal region of Korea

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초록

해수 환경 중의 VHSV 분포 조사를 위하여, 2003년 2월에서 5월까지 동해 및 남해안 인근 해역에 서식하는 자연산 해수 어류를 채집하였다. 바이러스 분리용 시료는 9종의 해수 어류로서 42개의 시료를 분석하였다. 각 시료의 조직여과액을 Epithelioma papulosum cyprini (EPC) cells에 접종한 결과, 고등어 Scomber japonicus와 숭어 Mugil cephalus에서 바이러스가 분리되었으며 이들 바이러스는 RT-PCR법을 이용하여 VHSV로 동정할 수 있었다. 고등어에서 VHSV가 검출되었다는 기보고는 있지만, 숭어에 대해서는 본 연구에서 처음으로 VHSV를 분리하였다. 자연산 어류에서 유래된 세 개의 VHSV isolates에 대한 glycoprotein gene을 분석한 결과, 이들 바이러스는 양식 넙치에서 질병을 유발하는 VHSV isolates와 유사하며 모두 genogroup I (American type)에 속하는 것으로 밝혀졌다.

Abstract

In order to analyse the detection of viral hemorrhagic septicemia virus (VHSV) in marine environment surrounding coastal region of Eastern and Southern sea of Korea, the pools of each organ sample of three fish were taken for virus assay from February to May in 2003. The sample comprised 42 samples, taken from 9 species of marine fishes. The VHSV was detected from chub mackerel Scomber japonicus and striped mullet Mugil cephalus in epithelioma papulosum cyprini (EPC) cells. The identity of the virus was confirmed a reverse transcriptase-polymerase chain reaction (RT-PCR). VHSV has previously been reported from chub mackerel, but not from striped mullet. The new isolates was classified as a member of genogroup I (American type) of VHSV and was closely related to the VHSV KVHS'01-1 based on comparisons of the partial nucleotide sequence of the glycoprotein (G) gene.

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