<span style="mso-bidi-font-weight:bold">First report on the intense cyanobacteria <i>Microcystis aeruginosa </i>Kützing, <span style="mso-bidi-font-weight:bold">1846 bloom at Muttukkadu Backwater, Southeast coast of India </span></span>

Abstract

Present study consists an intense <i>Microcystis aeruginosa </i>bloom was reported in Muttukadu backwater on 1^st June 2012. Density of <i>M. aeruginosa </i>was reported an average of 6×10⁸/L. Muttukadu backwater is highly polluted due to discharges from households and industries located along the banks of the estuary. The effect of pollution was reflected on microalgae abundance in the sew age-fed area. This study showed that the <i>M. aeruginosa </i>bloom has caused severe fish mass mortality attributed to the toxic effects exerted by this cyanobacteria bloom.