Experimental Horizontal Transmission of Enterocytozoon salmonis to Chinook Salmon, Oncorhynchus tshawytscha

Dolores Baxa, JOSEPH M. GROFF, Ronald Hedrick

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Enterocytozoon salmonis was transmitted to chinook salmon Oncorhynchus tshawytscha by feeding tissues infected with the parasite and by cohabitation of noninfected fish with experimentally infected fish. Affected fish (dead and survivors) in both transmission trials had gross and microscopic signs of the disease and merogonic and sporogonic stages of the parasite. There were no morbidities or mortalities, or evidence of the parasite among control fish in either study. Results suggest that the parasite may be contracted by indirect contact among healthy and infected fish held in crowded ponds or net pens or by direct ingestion of spores found in the water.

Original languageEnglish (US)
Pages (from-to)699-702
Number of pages4
JournalThe Journal of Protozoology
Volume39
Issue number6
DOIs
StatePublished - Jan 1 1992

Keywords

  • Mature spore
  • merogonic stage
  • microsporidian

ASJC Scopus subject areas

  • Parasitology

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