Chronic streptococcosis in Nile tilapia, Oreochromis niloticus (L.), caused by Streptococcus agalactiae

摘要

Streptococcus agalactiae, a gram-positive bacterium that can infect a number of fish species, including freshwater and seawater species, has a serious impact on fish aquaculture (Baeck et al. 2006; Garcia et al. 2008; Olivares-Fuster et al. 2008; Mian et al. 2009; Ye et al. 2011; Amal et al. 2012; Azad et al. 2012; Bowater et al. 2012; Chen et al. 2012). Tilapia is extremely susceptible to infection by S. agalactiae (Garcia et al. 2008; Olivares-Fuster et al. 2008; Hernandez et al. 2009; Mian et al. 2009; Ye et al. 2011; Chen et al. 2012).