Screening of freshwater fish species for their susceptibility to a betanodavirus.

Screening of freshwater fish species for their susceptibility to a betanodavirus. Research Abstract Details 

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Screening of freshwater fish species for their susceptibility to a betanodavirus. Abstract Text:

Ryo Furusawa,Yasushi Okinaka,Kazumasa Uematsu,Toshihiro Nakai,Ryo Furusawa,Yasushi Okinaka,Kazumasa Uematsu,Toshihiro Nakai,

Betanodaviruses, the causative agents of viral nervous necrosis in marine fish, have bipartite positive-sense RNA genomes. Because the genomes are the smallest and simplest among viruses, betanodaviruses have been well studied using a reversed genetics system as model viruses. However, studies of virus-host interactions have progressed slowly because permissive hosts for betanodaviruses (basically larvae and juveniles of marine fish) are only available for limited periods of the year and are not suitable for the construction of a genetic engineering system. To obtain a model fish species that are not subject to these problems, 21 freshwater fish species were injected intramuscularly with a betanodavirus (redspotted grouper nervous necrosis virus) and tested for their susceptibility to the virus. Based on their responses, the tested fish were classified into 3 groups: 4 susceptible fish, 10 less susceptible fish, and 7 resistant fish. The susceptible fish, celebes rainbowfish Telmatherina ladigesi, threadfin rainbowfish Iriatherina werneri, dwarf rainbowfish Melanotaenia praecox, and medaka Oryzias latipes, exhibited erratic swimming and eventually died within 10 d post-inoculation. The virus was specifically localized in the brains, spinal cords, and retinas of the infected fish, similar to the pattern of infection in naturally infected marine fish. We believe that these susceptible freshwater fish species could act as good host models for betanodavirus-fish interaction studies.

Screening of freshwater fish species for their susceptibility to a betanodavirus. Publishing Authors By Initials

R Furusawa,Y Okinaka,K Uematsu,T Nakai,R Furusawa,Y Okinaka,K Uematsu,T Nakai,

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Screening of freshwater fish species for their susceptibility to a betanodavirus. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Diseases of aquatic organisms

VOLUME: 77

Page Numbers: 119-25

Journal Abbreviation: Dis. Aquat. Org.

ISSN: 0177-5103

DAY: 14

MONTH: Sep

YEAR: 2007

Screening of freshwater fish species for their susceptibility to a betanodavirus. Information

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LANGUAGE: eng

NlmUniqueID: 8807037

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Grant and Affiliation Information for Screening of freshwater fish species for their susceptibility to a betanodavirus.

AFFILIATION: Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima 739-8528, Japan.

Country: Germany

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MEDLINETA: Dis Aquat Organ

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