Molecular identification of a bloom-forming species isolated from Sanggou Bay in Shandong Province
一株桑沟湾赤潮藻的分子鉴定

A seldom seen red tide occurred in Sanggou Bay, Shandong province, China in May, 2011 and the local shellfish aquaculture was greatly affected. During this event, we have isolated a dominant alga strain and we augmented and analyzed its 18S ribosomal DNA and internal transcribed spacer sequences. The phylogenetic trees based on the two sequences both revealed that this species clusters with Karlodinium veneficum(=K. micrum). So it is identified as K. veneficum, one of harmful algal bloom species reported in the Southern Sea of China previously. This is the first report of this alga to appear in bloom in Sanggou bay.