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United States Department of Agriculture

Agricultural Research Service

Research Project: VACCINOLOGY AND IMMUNITY OF AQUATIC ANIMALS

Location: Aquatic Animal Health Research

Title: Streptococcus: a Worldwide Fish Health Problem

Authors
item Klesius, Phillip
item Shoemaker, Craig
item Evans, Joyce

Submitted to: International Symposium on Talipia in Aquaculture
Publication Type: Proceedings
Publication Acceptance Date: August 1, 2008
Publication Date: October 12, 2008
Citation: Klesius, P.H., Shoemaker, C.A., Evans, J.J. 2008. Streptococcus: a worldwide fish health problem. Proceedings from the 8th International Symposium on Talipia in Aquaculture. Cairo, Egypt October 12-14, 2008. Volume 1: p 83-107.

Interpretive Summary: Streptococcus iniae and S. agalactiae are important emergent pathogens that affect many fish species worldwide, especially in warm-water regions. In marine and freshwater systems, these Gram-positive bacteria cause significant economic losses, estimated at hundreds of millions of dollars annually. Infection results in septicemia and neurotropic disease, with cumulative percent mortality between 30 to 50%. Streptococcal disease is very difficult to control because these pathogens are resistant or become resistant to most chemicals and drugs. The aim of this paper is to review current information on fish streptococcosis including aspects of epidemiology, diagnosis, pathogenesis, and prevention, treatment and control measures in farmed tilapia.

Technical Abstract: Streptococcus iniae and S. agalactiae are important emergent pathogens that affect many fish species worldwide, especially in warm-water regions. In marine and freshwater systems, these Gram-positive bacteria cause significant economic losses, estimated at hundreds of millions of dollars annually. Infection results in septicemia and neurotropic disease, with cumulative percent mortality between 30 to 50%. Streptococcal disease is very difficult to control because these pathogens are resistant or become resistant to most chemicals and drugs. The aim of this paper is to review current information on fish streptococcosis including aspects of epidemiology, diagnosis, pathogenesis, and prevention, treatment and control measures in farmed tilapia.

Last Modified: 9/21/2014