Heterosigma akashiwo

The proportion and content of FFA in four species of causative phytoplankton of red tides, Chatonella antiqua, Heterosigma akashiwo, Skeletonema costatum, and Chaetoceros didymum, cultured in axenic conditions were determined by fluorometric HPLC after derivatization with ADAM by Suzuki and Matsuyama (38). 

Fig. 12 High-performance liquid chromatographic resolution of the 9-anthrylmethyl esters of free fatty acids obtained from Heterosigma akashiwo cultured in axenic conditions. An aliquot (1/100 of 31 mg of phytoplankton) of the extract was injected. The peak of 20 5 corresponds to 746 ng. Unidentified peak with 0.42 in relative retention time with respect to 18 0. See text for chromatographic conditions.

Neurotoxins in a toxic red tide of Heterosigma akashiwo (Raphidophyceae) in Kagoshima Bay, Japan. Aquaculture Research 28, 9-14. 

Rademaker, M., Reckermann, M., Tilla, U., Tillman-Mayer, A., Colijn, E, Zevenboom, W. 1997. Fibrocapsa Japonica and Heterosigma akashiwo (Raphidophyceae) along the Dutch and German coasts new observations. Harmful Algae News 17, 8-10. 

Lawrence, J. E., and Suttle, C. A. (2004). Effect of viral infection on sinking rates of Heterosigma akashiwo and its implications for bloom termination. Aquat. Microb. Ecol. 37, 1—7. 

Herndon, J., Cochlan, W. P. (2007). Nitrogen utilization by the raphidophyte Heterosigma akashiwo Growth and uptake kinetics in laboratory cultures. Harmful Algae 6, 260—270. 

Nagasaki, K., Ando, M., Itakura, S., Imai, I., and Ishida, Y. (1994). Viral mortahty in the final stage of Heterosigma akashiwo (Raphidophyceae) red tide. f. Plankton Res. 16, 1595—1599. 

Heterosigma-glycolipids are a series of galactosyl diac-ylglycerols isolated from the Japanese species Heterosigma akashiwo, collected in Osaka bay and cultured in artificial seawater. They all possess n-3 polyimsaturated fatty adds residues 18 4(n-3), 18 5(n-3), and 20 5(n-3) (Kitagawa, Hayashi, and Kobayashi, 1989 Kobayashi et al., 1992). 

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