In vitro phagocytosis af Giardia duodenalis cysts by hemocytes of the Asian freshwater clam Corbicula fluminea

Thaddeus K. Graczyk, Michael R. Cranfield, David Bruce Conn

Research output: Contribution to journalArticle

Abstract

Hemocytes of the Asian freshwater clam Corbicula fluminea, phagocytosed in vitro infectious Giardia duodenalis cysts. After 15, 30, 60, 90, and 120 min of incubation an average of 22%, 32%, 43%, 54%, and 72% of the cysts were phagocytosed by 22%, 55%, 63%, 81%, and 86% of the hemocytes, respectively. The number of hemocytes showing phagocytosis and the mean number of cysts ingested per hemocyte increased significantly over time (P < 0.01); the numbers of nonphagocytosed cysts significantly decreased (P < 0.02). Extrapolation reveals that C. fluminea can retain by phagocytosis an average of 1.6 x 106 G. duodenalis cysts/ml hemolymph. The phagocytic capacity of C. fluminea hemocytes indicates the applicability of this freshwater benthic bivalve for bioindication of contamination of waste waters and agricultural drainage with Giardia cysts.

Original languageEnglish (US)
Pages (from-to)743-745
Number of pages3
JournalParasitology Research
Volume83
Issue number8
DOIs
StatePublished - Oct 10 1997

ASJC Scopus subject areas

  • Parasitology
  • veterinary(all)
  • Insect Science
  • Infectious Diseases

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