First detection of paralytic shellfish poisoning (PSP) toxins in Icelandic mussels (Mytilus edulis): Links to causative phytoplankton species

► First report of PSP toxins in blue mussels from Iceland. ► Phytoplankton bloom of Alexandrium tamarense and Alexandrium ostenfeldii. ► Mussel samples analysed by MBA and LC-FLD. ► Toxin profile of GTX-2,3, STX and GTX-1,4.