Gill Disease In Trout Research Articles

Development of an Effective Whole-Spore Vaccine To Protect against Microsporidial Gill Disease in Rainbow Trout (Oncorhynchus mykiss) by Using a Low-Virulence Strain ofLoma salmonae

In determining the effective vaccine spore dose of a low-virulence strain of Loma salmonae to limit microsporidial gill disease in trout, we found that fish receiving 10(3) to 10(5) killed spores had the best protection against experimental infection, with 85% fewer xenomas in their gills than in the controls. Intraperitoneal delivery of the vaccine was effective, and the addition of adjuvant did not improve vaccine performance against this disease-causing microsporidian.

Experimental Production of Bacterial Gill Disease in Trout by Horizontal Transmission and by Bath Challenge

Abstract Bacterial gill disease was horizontally transmitted both within and between salmonid species by using good-quality water common to both sick and healthy fish, and by using young and mature animals. Clinical disease was produced within 24 h, and mortality resulted often within 48 h, even in 2- or 3-year-old rainbow trout Oncorhynchus mykiss. Clinical disease was correlated with the appearance of filamentous bacteria on the gill surface. These bacteria were isolated and determined to be morphologically, biochemically, and antigenically related to Flavobacterium branchiophila. Subsequently, they were used to produce bacterial gill disease in fingerling rainbow trout by adding a pure culture of 105 organisms/mL of tank water; once again, good water quality conditions were maintained. Attachment of large numbers of bacteria to the gill surface was seen immediately postexposure, followed by clinical disease within 20 h and death by 24 h.

Further Observations on the Gill Disease of Trout

Transactions of the American Fisheries SocietyVolume 57, Issue 1 p. 210-216 Original Articles Further Observations on the Gill Disease of Trout H. S. Davis, H. S. Davis U. S. Bureau of Fisheries, USASearch for more papers by this author H. S. Davis, H. S. Davis U. S. Bureau of Fisheries, USASearch for more papers by this author First published: January 1927 https://doi.org/10.1577/1548-8659(1927)57[210:FOOTGD]2.0.CO;2Citations: 1AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume57, Issue1January 1927Pages 210-216 RelatedInformation

A New Gill Disease of Trout

A New Gill Disease of Trout