Sterols and Fatty Acids of the Harmful Dinoflagellate Cochlodinium polykrikoides |
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| Authors: | José‐Luis Giner Harriette Ceballos Ying‐Zhong Tang Christopher J. Gobler |
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| Affiliation: | 1. Department of Chemistry, State University of New York ‐ ESF, Syracuse NY 13210, USA, (phone: +1‐315‐470‐6895;2. fax: +1‐315‐470‐6856);3. Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P.?R. China;4. School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794, USA |
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| Abstract: | Sterol and fatty acid compositions were determined for Cochlodinium polykrikoides, a toxic, bloom‐forming dinoflagellate of global significance. The major sterols were dinosterol (40% of total sterols), dihydrodinosterol (32%), and the rare 4α‐methyl Δ8(14) sterol, amphisterol (23%). A minor sterol, 4α‐methylergost‐24(28)‐enol was also detected (5.0%). The fatty acids had a high proportion of PUFAs (47%), consisting mainly of EPA (20%) and the relatively uncommon octadecapentaenoic acid (18 : 5, 22%). While unlikely to be responsible for toxicity to fish, these lipids may contribute to the deleterious effects of this alga to invertebrates. |
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| Keywords: | Marine sterols Marine natural products Chemotaxonomy Fatty acids |
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