Evaluation of the microbial population from recirculating marine aquarium
Journal Title: Advances in Environmental Sciences - International Journal of the Bioflux Society - Year 2009, Vol 1, Issue 1
Abstract
Marine ornamental fishes are the most beautiful and fascinating creatures of the aquatic environment. Ornamental fish keeping has developed into a hobby and ranks next to photography. These fishes are facing more problems from microbial pathogens. To prevent disease outbreaks, it is important to understand how diseases are occurring. Therefore an attempt was made to study the bacterial population, pathogenic bacteria identification and nitrogen concentration in the aquarium waters. The observed ammonia values ranged from 0.031 to 0.144 Mg L-1, nitrite from 0.014 to 0.314 Mg L-1 and nitrate from 0.793 to 69.821 Mg L-1. The total bacterial counts of the water samples ranged from 5.4 x 102 to 2.1 x 107 CFU mL-1. The maximum bacterial count was found in the storage tank water sample (2.1 x 107 CFU mL-1) and the minimum bacterial count was found in the healthy tank sample (5.4 x 102 CFU mL-1). The most dominant colonies were Escherchia coli, Vibrio sp., Pseudomonas sp., Enterobacter sp. and Bacillus sp. Among these, diseased aquarium tank microbes used for the further identification. Of these the most predominant species (Vibrio parahaemolyticus, Bacillus subtilis and Bacillus licheniformis) were identified based on the MIS gas chromatography.
Authors and Affiliations
Pitchaikkaran Raja, Shanmugam Velmurugan, Marimuthu Natarajan, Santhanam Rajagopal
Keywords
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