Effect of light and nitrogen concentration on the growth and lipid content of marine diatom, Chaetoceros calcitrans

Yousef Filizadeh | Mahsa Akbarnejad | Houman Rajabi Islami | Mehran Javaheri Baboli | Mehdi Shamsaie Mehrgan

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=148114
Date :  2020/07/13
Publish in :    Iranian Journal of Fisheries Sciences

Link :  http://jifro.ir/browse.php?a_code=A-10-2557-1&slc_lang=en&sid=1
Keywords :Chaetoceros calcitrans, Light, Nutrient levels, Experimental conditions

Abstract :

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C. calcitrans microalgae require number of factors such as light and nutrients for optimum growth. Experimental results showed that the growth of C. calcitrans was highly influenced by nutrition levels and light density. As indicated in this expriemnt, maximum growth was reached in cell count of C. calcitrans, slowed down and then started to decrease. The highest cell count (402×106) of the C. calcitrans was obtained at 100 nutrient level compared with the lowest at 25 (279×106) 20 days after inoculation. There was no significant difference between control (400×106) and 100 nutrient 20 days after algae cell inoculation (p0.05). According to the average growth rate, the cell count increased gradually between 5 to 10 days of inoculation with the lowest on the 25th day. Results showed no significant differences between treatments after 5 days of media enrichment with the experimental nutrients.