Seventy-eight isolates of Streptococcus inte were recovered from 200 diseased brackish water Oreochromis niloticus (Nile tilapia) fish with an incidence of 86.7% of the total number of isolated Streptococcus species. To investigate the effect of nitrite, alkaline pH, salinity and water temperature on the susceptibility of Oreochromis niloticus (Nile tilapia) to streptococcosis; ten water sam- ples were collected and the results obtained were as follows: nitrite concentration was 3.2 ug/L wa- ter. pH was 8.2, salinity was 18 ppt (part per thou- sand) and water temperature was 26±2°C. environmentally stressed and experimentally infected fish showed mortality rate of 73.3% compared with a mortality rate of 46.6% in non- environmentally stressed fish. In the meantime, LD50 values for S. Iniae were 1 x 105.1 cfu/ml for environmentally stressed fish compared with Ix 105.5 cfu/ml for non-stressed tilapia.
RADWAN, L. (2002). MICROBIOLOGICAL STUDIES ON CHARACTERISTICS OF STREPTOCOCCUS INIAE ISOLATED FROM DISEASED TILAPIA NILOTICA AND AQUATIC ENVIRONMENTS. Veterinary Medical Journal (Giza), 50(2), 273-297. doi: 10.21608/vmjg.2002.369252
MLA
L RADWAN. "MICROBIOLOGICAL STUDIES ON CHARACTERISTICS OF STREPTOCOCCUS INIAE ISOLATED FROM DISEASED TILAPIA NILOTICA AND AQUATIC ENVIRONMENTS", Veterinary Medical Journal (Giza), 50, 2, 2002, 273-297. doi: 10.21608/vmjg.2002.369252
HARVARD
RADWAN, L. (2002). 'MICROBIOLOGICAL STUDIES ON CHARACTERISTICS OF STREPTOCOCCUS INIAE ISOLATED FROM DISEASED TILAPIA NILOTICA AND AQUATIC ENVIRONMENTS', Veterinary Medical Journal (Giza), 50(2), pp. 273-297. doi: 10.21608/vmjg.2002.369252
VANCOUVER
RADWAN, L. MICROBIOLOGICAL STUDIES ON CHARACTERISTICS OF STREPTOCOCCUS INIAE ISOLATED FROM DISEASED TILAPIA NILOTICA AND AQUATIC ENVIRONMENTS. Veterinary Medical Journal (Giza), 2002; 50(2): 273-297. doi: 10.21608/vmjg.2002.369252
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