Enteric redmouth disease

  • Busch R
N/ACitations
Citations of this article
11Readers
Mendeley users who have this article in their library.

Abstract

-Enteric red mouth (ERM) disease of salmonid fishes is reviewed in terms of description of the etiological agent, pathogenesis and diagnosis of the clinical condition, and epizootiological considerations pertinent to its effective control. Recent studies defining the asymptomatic carrier state of the disease are discussed. Enteric red mouth disease is shown to establish an asymptomatic carrier state infection in the lumen of the lower intestine in 50 to 75 percent of epizootic survivors 60 to 65 days postinfection. This chronic carrier state is main-tained for more than 102 days in the experimental population. A cyclical intestinal shedding pattern develops with a periodicity of 36 to 40 days and serves to cause regular reinfection and mortality. A serological presumptive screening test for ERM is described. The system is shown to be sensitive and specific and readily adapted to the rapid screening of large numbers of individual small volume sera for presumptive evidence of specific disease association at a minimum cost and without sacrifice of fish over 15 cm in length. Based upon serological screen field data, ERM is shown to consistently develop a 2.0 to 2. 7percent carrier incidence among populations following epizoo-tic infection. The humoral immune response of rainbow trout to various antigenic preparations of the ERM bacterium is examined. Various soluble protein fractions are shown to be more immunogenic than lipopolysaccharide fractions. A particu-late cell wall antigen and several other killed whole cell antigens resulted in high titers while a heat-killed whole-cell preparation is shown to be nonimmunogenic. Serum agglutinin titers declined at a monthly rate of 9.8 percent following induction

Cite

CITATION STYLE

APA

Busch, R. (1978). Enteric redmouth disease. Marine Fisheries Review, 40(3), 42–51.

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free