CULTURE OF A MARINE CYANOBACTERIUM PHORMIDIUM TENUE (MYXOPHYCEAE HORMOGONALES)/

Phormidium tenue from mangrove and shrimp pond ecosystems was studied for biomass production. The specie's grew well under laboratory condit ions in the marine nutrient (MN) medium incorporated with urea (92 mu g.l(-1)), superphosphate (24.7 mu g.l(-1)) and potash (4.94 mu g.l(-1) ), maintained at a salinity of 40 x 10(-3), pH 8 and light intensity o f 160 J.s(-1). Under field conditions, the species did not require any addition of nutrients to the MN medium, but only shaded condition and 15 cm of water depth for better biomass production.