What the Prorocentrum species should be? -A review on identification of a Prorocentrum species from the East China Sea Research on siderophore secreted by Prorocentrum donghaiense Lu under iron-limited conditions Effects of Alexandrium tamarense and Prorocentrum donghaiense on rotifer Brachionus plicatilis population Inhibitory effect of extracts from Eichhornia crassipes on the growth of Prorocentrum donghaiense