Optimum temperature and salinity conditions for growth of green algae Chlorella ellipsoidea and Nannochloris oculata

The effects of temperature and salinity on growth of green algae Chlorella ellipsoidea and Nannochloris oculata were determined to compare the optimum culture conditions. A four‐temperature (15, 20, 25, and 30°C) × three‐salinity (10, 20, and 30) factorial design with triplicates was applied. Specif...

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Published in:Fisheries science 2007-10, Vol.73 (5), p.1050-1056
Main Authors: CHO, Sung Hwoan, JI, Sung‐Choon, HUR, Sung Bum, BAE, Jeanhee, PARK, In‐Seok, SONG, Young‐Chae
Format: Article
Language:English
Subjects:
Algae
Aquatic plants
Brackish
Chlorella ellipsoidea
Density
Growth conditions
Marine
Nannochloris oculata
Salinity
temperature
Temperature effects
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Summary:The effects of temperature and salinity on growth of green algae Chlorella ellipsoidea and Nannochloris oculata were determined to compare the optimum culture conditions. A four‐temperature (15, 20, 25, and 30°C) × three‐salinity (10, 20, and 30) factorial design with triplicates was applied. Specific growth rate (SGR), maximum density, and duration to reach maximum density of C. ellipsoidea were significantly affected by both temperature and salinity. The highest SGR was observed in C. ellipsoidea at 25°C and salinity 10, but the maximum density was very low. The highest maximum density was achieved in C. ellipsoidea at 15°C and 10. The slope constant of the linear relationship between semilogarithmic growth of C. ellipsoidea and day of culture was highest at 15°C and 10. The SGR and duration to reach maximum density of N. oculata were significantly affected by both temperature and salinity. However, maximum density of N. oculata was significantly affected by temperature, but not salinity. The highest maximum density was achieved in N. oculata at 25°C and 30, but SGR was significantly lower than that of N. oculata at 25°C and 10. The slope constant of the linear relationship between semilogarithmic growth of N. oculata and day of culture was highest at 25°C and 30. Based on these results, the condition of 15°C and salinity 10 seemed to be optimal for maximum density of C. ellipsoidea, and the condition of 25°C and 10 and 30 for SGR and maximum density for N. oculata, respectively.
ISSN:0919-9268
1444-2906
DOI:10.1111/j.1444-2906.2007.01435.x