Cyanobacterial Composition and Selected Water Quality Parameters from Two Different Types of Tor tambroides Rearing Ponds.
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THE SARAWAK MUSEUM JOURNAL |
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Title :
Cyanobacterial Composition and Selected Water Quality Parameters from Two Different Types of Tor tambroides Rearing Ponds. |
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Author :
Mohd. Nasarudin Harith and Ruhana Hassan |
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Abstract:
The composition of cyanobacteria in two Tor tambroides rearing ponds, namely HDPE pond and earthen pond located in Sedan, Sarawak were presented in relation with water quality parameters. Twenty species belonging to 11 genera of cyanobacteria were recorded from both ponds. Five genera of the cyanobacteria namely Synechocystis, Oscillatoria, Chroococcus, Nostoc and Pleurocapsa were common in both ponds. The presence of cyanobacteria genera Microcystis, Anabaena and Oscillatoria entails the potential risk of cyanotoxin bioaccumulation and biomagnification in food chain. Several cyanobacteria genera that could be used as bio-indicator were also identified namely Microcystis and Oscillatoria. The cell density of cyanobacteria showed strong positive correlation with pH in HDPE pond and strong positive correlation with turbidity in earthen pond. This indicated that, orthophosphate and nitrate are not the only factors that influence cyanobacteria composition in aquaculture ponds but also environmental factors such as turbidity, light, other phytoplankton groups and nutrients such as ammonia-nitrogen. High cyanobacteria densities with higher number of species identified in the earthen pond compared to the HDPE pond showed that an earthen pond can be considered an optimal habitat for cyanobacteria.
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| DOI: XXXX |
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How to cite:
Mohd. Nasarudin Harith and Ruhana Hassan. (2012). Cyanobacterial Composition and Selected Water Quality Parameters from Two Different Types of Tor tambroides Rearing Ponds. The Sarawak Museum Journal, LXX (91): 199-226 |
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References
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