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Evaluation of four methods to establish asymptomatic carriers of Aeromonas salmonicida in juvenile spring chinook salmon, Oncorhynchus tshawytscha (Walbaum)
Author(s) -
MARKWARDT N. M.,
KLONTZ G. W.
Publication year - 1989
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1989.tb00319.x
Subject(s) - chinook wind , oncorhynchus , aeromonas salmonicida , fishery , juvenile , biology , rainbow trout , asymptomatic , ingestion , asymptomatic carrier , fish <actinopterygii> , medicine , ecology , biochemistry
. This study evaluated four methods to establish asymptomatic carriers of Aeromonas salmonicida. Exposure of chinook salmon, Oncorhynchus tshawytscha (Walbaum), to A. salmonicida by gastric intubation resulted in a carrier prevalence of 65%. This prevalence was significantly higher than prevalences of 40, 20 and 10% after exposure respectively to broth culture bath, ingestion of broth coated feed, and exposure to intraperitoneally infected fish.