A viral disease associated with mortalities in hatchery-reared postlarvae of the giant freshwater prawn Macrobrachium rosenbergii

Jean Michel Arcier, François Herman, Donald V. Lightner, Rita M. Redman, Jocelyne Mari, Jean Robert Bonami

Research output: Contribution to journalArticle

120 Scopus citations

Abstract

During mortality outbreaks in hatchery-reared Macrobrachium rosenbergii postlarvae (PL) in Guadeloupe Island (French West Indies) during 1997, an associated viral disease was discovered and the agent was subsequently isolated. The clinical signs presented by severely affected PL consisted essentially of an opaque whitish appearance of the abdomen. Histopathological changes in affected PL were characterized predominantly by pale to darkly basophilic, often reticulated, cytoplasmic inclusions in the connective tissue cells of most organs and tissues. The isolated virus was approximately 30 nm in diameter as observed with an electron microscope by negative staining. By its location, structure and size it could be related to different families of the small RNA cytoplasmic viruses such as the Picornaviridae or the Nodaviridae. Its characterization is in progress.

Original languageEnglish (US)
Pages (from-to)177-181
Number of pages5
JournalDiseases of Aquatic Organisms
Volume38
Issue number3
DOIs
StatePublished - Nov 30 1999

Keywords

  • Crustacean
  • Freshwater prawn
  • Macrobrachium rosenbergii
  • Viral disease

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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