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Surveillance of Emerging Fish Viral Pathogens in Some Southeast Asian Countries

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Title: Surveillance of Emerging Fish Viral Pathogens in Some Southeast Asian Countries
Authors: Lio-Po, Gilda
Amar, Edgar
Peña, Leobert de la
Orozco, Zenith Gaye
Faisan, Joseph
show 2 moreSuarnaba, Vonie
Tubo, Delia Belle

show less
Keywords: koi herpesvirus (KHV), spring viremia of carp virus (SVCV), grass carp reovirus (GCRV), surveillance, Cambodia, Lao PDR, Myanmar, Philippines, Vietnam
LC Subject Headings: Fish culture--Israel--Periodicals.
Fish culture--Periodicals.
Issue Date: 2009
Publisher: Israeli Journal of Aquaculture - BAMIGDEH
Citation: Lio-Po, G., Amar, E., Peña, L., Orozco, Z.G., Faisan, J., Suarnaba, V., & Tubo, D.B. (2009). Surveillance of Emerging Fish Viral Pathogens in Some Southeast Asian Countries. The Israeli Journal of Aquaculture - Bamidgeh, 61(3), 208-214.
Series/Report no.: The Israeli Journal of Aquaculture - Bamidgeh
Abstract: Preventing the transboundary movement of fish viral pathogens in a global environment requires active surveillance. This study examined the presence of three emerging viral pathogens among koi, common, grass, and silver carp in Cambodia, Lao PDR, Myanmar, Philippines, and Vietnam. The stud- ied viruses included koi herpesvirus (KHV), spring viremia of carp virus (SVCV), and grass carp reovirus (GCRV). Detection methods consisted of virus isolation by cell culture, infection assay in naive fish, polymerase chain reaction (PCR), and reverse-transcriptase PCR (RT-PCR). Tissues were collected and pooled from 193 fish samples in Dec. 2004 to Feb. 2005, 406 in Sep. 2005 to Feb. 2006, and 1302 in Oct. 2006 to Feb. 2007. For cell cul- ture, tissue filtrates were prepared from pooled spleens, kidneys, livers, and gills and inoculated onto koi fin (KF-1), grass carp kidney (GCK), and fat head minnow (FHM) cells. For infection assay, tissue filtrates were injected intraperitoneally to healthy, naive common carp. No virus was detected after three cell culture passages and the infection bioassays. One-step and nest- ed-step PCR was used to detect KHV in gills of fish samples. One-step and semi-nested RT-PCR was used to detect SVCV and GCRV in the spleens, kidneys, and livers of fish samples. Samples from all three years from all five countries yielded negative results for all three viruses, indicating that KHV, SVCV, and GCRV were not present in these five countries during the period of the study although KHV outbreaks had been detected in Indonesia, Taiwan, Japan, Thailand, China, and Malaysia.
Pages/Duration: 7 pages
ISSN: 0792-156X
Appears in Collections:IJA Volume 61, Issue 3, 2009

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