A lymphoma-like neoplasm arising from hematopoietic tissue in the white shrimp, Penaeus vannamei Boone (Crustacea: Decapoda)

D. V. Lightner, J. A. Brock

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

A pond-reared adult female Pacific white shrimp (Penaeus vannamei Boone, Crustacea: Decapoda) from an experimental shrimp culture facility in Hawaii was found to possess a lymphatic neoplasm. Present in this animal were bilateral hypertrophied hematopoietic nodules present ventral and lateral to the ventral nerve cord, and smaller multiple ectopic foci of similar appearing lymphoid cells in the gills, the subcutis, and other tissues. The lesions contained numerous anaplastic and hypertrophied lymphoid cells, many of which displayed bizarre mitotic figures, including polypolar metaphase figures. Numerous multinuclear giant cells present in the lesion were presumed to have originated from cells with polypolar mitotic figures. The characteristics of the cells composing these lesions, the expansive and invasive nature of the lesions, and the presence of ectopic foci of neoplastic cells support classification of this lesion as a hematopoietic sarcoma. Focal lesions of the type that are diagnostic of infections by the penaeid shrimp virus IHHN were present in the neoplastic hematopoietic tissue and other tissues of this shrimp, suggesting the possible role of viral infection in the development of neoplastic lesions in this animal.

Original languageEnglish (US)
Pages (from-to)188-193
Number of pages6
JournalJournal of Invertebrate Pathology
Volume49
Issue number2
DOIs
StatePublished - Mar 1987

Keywords

  • Crustacea
  • IHHN virus
  • Penaeus vannamei
  • hematopoietic sarcoma
  • lymphoma
  • neoplasia
  • penaeid shrimp

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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