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Experimental Horizontal Transmission of Enterocytozoon salmonis to Chinook Salmon, Oncorhynchus tshawytscha
Author(s) -
BAXAANTONIO DOLORES,
GROFF JOSEPH M.,
HEDRICK RONALD P.
Publication year - 1992
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1992.tb04451.x
Subject(s) - chinook wind , oncorhynchus , parasite hosting , biology , zoology , transmission (telecommunications) , fish <actinopterygii> , myxozoa , enterocytozoon bieneusi , fishery , microsporidia , spore , microsporidiosis , microbiology and biotechnology , world wide web , computer science , electrical engineering , engineering
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.