Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/129128
Title: THE INFLUENCE OF ENVIRONMENTAL FACTORS ON TOXIN PRODUCTION BY CYLINDROSPERMOPSIS
Authors: NUR HAZIMAH BTE MOHAMED NOR
Keywords: Cyanobacteria, water quality, cyanotoxin, cylindrospermopsin, Cylindrospermopsis
Issue Date: 15-Jun-2016
Citation: NUR HAZIMAH BTE MOHAMED NOR (2016-06-15). THE INFLUENCE OF ENVIRONMENTAL FACTORS ON TOXIN PRODUCTION BY CYLINDROSPERMOPSIS. ScholarBank@NUS Repository.
Abstract: Harmful algal blooms are becoming more prevalent as global temperatures increase and climate change results in hydrological changes which then affects the nutrient inputs into freshwater systems. A tropical potentially bloom-forming cyanobacterium, Cylindrospermopsis sp. was isolated to further understand its growth and its potential toxicity. The influence of phosphorus, light and temperature on the growth and toxin production of the locally isolated strain was investigated in batch cultures. The species proved to be able to adapt to a wide range of phosphorus levels, light exposures and temperatures, displaying high growth rates at the highest light intensity at 85 µmol m-2 s-1, and at a temperature of 33°C. Toxin production did not correlate to growth and was more directly related to the variables. The results of this study suggests the potential of a Cylindrospermopsis spp. bloom in the near future when growth conditions are optimal and thus higher total toxin levels.
URI: http://scholarbank.nus.edu.sg/handle/10635/129128
Appears in Collections:Master's Theses (Open)

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