• K. Jebaanathi
• V. Sornalakshmi
• Venkataraman Kumar

Domestic sewage contains a wide variety of dissolved and suspended impurities and it affects the growth of seaweeds. In the present investigation, effect of different concentration of domestic sewage [1%, 5% and 10%] was studied on the daily growth rate (DGR), total chlorophyll, carotenoids, sugar, protein and phycocolloids of Ulva lactuca, Padina tetrastromatica and Gracilaria corticata cultured in the laboratory. These cultures were incubated at 28 2 0C under 16:8 LD cycle of 800 lux light intensity for a period of 21 days. Ulva lactuca and Gracilaria corticata responded well to sewage in all concentration by exhibiting enhanced DGR and other biochemicals. In Padina, at 1% concentrations of domestic sewage, the DGR and photosynthetic pigments were exceeded over the control.

Domestic sewage, seaweeds, pigments, biochemicals

"EFFECT OF DOMESTIC SEWAGE ON MARINE SEAWEEDS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.848-855, February-2019, Available :http://www.jetir.org/papers/JETIRAB06163.pdf

"EFFECT OF DOMESTIC SEWAGE ON MARINE SEAWEEDS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp848-855, February-2019, Available at : http://www.jetir.org/papers/JETIRAB06163.pdf