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ICTV Virus Taxonomy Profile: Nimaviridae.

Han-Ching Wang1,2, Ikuo Hirono3, Mary Beth Bacano Maningas4

  • 12​International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, 701, Taiwan, ROC.

The Journal of General Virology
|March 30, 2019
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White spot syndrome virus (WSSV) infects aquatic crustaceans, causing significant economic damage. This summary details the Nimaviridae family, focusing on WSSV

Keywords:
ICTV ReportNimaviridaetaxonomywhite spot syndrome virus

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Area of Science:

  • Virology
  • Aquaculture Pathology

Background:

  • The family Nimaviridae encompasses viruses infecting aquatic crustaceans.
  • White spot syndrome virus (WSSV) is the sole species within this family.
  • WSSV causes significant economic losses in aquaculture globally.

Purpose of the Study:

  • To summarize the International Committee on Taxonomy of Viruses (ICTV) report on the family Nimaviridae.
  • To provide an overview of the characteristics of WSSV.

Main Methods:

  • Review and synthesis of the ICTV report on Nimaviridae.
  • Characterization of virion morphology, genome structure, and protein composition of WSSV.

Main Results:

  • WSSV virions are ellipsoid to bacilliform with a unique terminal extension.
  • The virus possesses a large, circular dsDNA genome (280-307 kbp) with repeat regions.
  • Over 80 structural and functional proteins have been identified from 531 open reading frames (ORFs).

Conclusions:

  • WSSV is a highly lethal and contagious pathogen responsible for white spot disease in shrimp.
  • The ICTV report provides a comprehensive taxonomic and descriptive overview of the Nimaviridae family.