Samples offarm shrimp and pond water were collectedfrom Chi/aw. Totalbacterial counts of coliforms and Escherichia coli are reportedfor these samples.Pathogens Vibrio parahaemolyticus, and Salmonella along with qualitativemicroflora are also reported.The bacterial counts of water rangedfrom 5 x 102/gto 8.8 x 103/g whereasthat of shrimp rangedfrom 2.0 x IO"/g to 9.0 x lO'/g. E. coli. ranged from 3 toII/g for prawns 3/I00ml. to 49/I00ml. for pond water. Two shrimp sampleswere positive for v. parahaemolyticus bacterial counts, coliforms or E. colicounts did not show any correlation with water salinity, which rangedfrom 14-18ppt,Gram positive bacteria were predominant in shrimp and were representedby Micrococci (41.8%). Corynebacterium (19.3%) and Bacillus (14.2%).Common gram-negatives were Vibrios (19.2%) and Pseudomonas (5%).
Author Biographies
T. S. G. FONSEKA, National Aquatic Resources Agency
Crow Island
Colombo 15
National Aquatic Resources Agency
Crow Island
Colombo 15
K. HETTIARACHCHI, National Aquatic Resources Agency
Crow Island
Colombo 15