Microbiological studies of the mangrove oyster Crassostrea gasar (Adanson 1757) from an experimental fish farm of the Lagos lagoon, Nigeria.
Crassostrea gasar, the mangrove oyster and the surrounding fish farm water were examined microbiologically. The aim was to determine the bacterial load and level of contamination. Oysters were collected from the experimental fish farm of the Nigerian Institute for Oceanography and marine Research, with its water source from the Lagos Lagoon. The oysters were discovered to be contaminated, with the Coliform/Eschericia coli counts in the range of 56/100g to above 1,800/100g for samples collected. Salmonellla pathogen was present and the counts were in the range of 3.10 x 102 to 1.99 x 106 per gram. The total viable becteria counts were in the range of 3.18 x 102 to 2.20 x 106 per gram. Analysis of the farm water revealed a positive correlation in microbial counts of the oysters and the surrounding water.