Alexandrium catenella (Dinophyceae), a toxic ribotype expanding in the NW Mediterranean Sea
MetadataShow full item record
AuthorsPenna, A. (Antonella); Garcés, E. (Esther); Vila, M. (Magda); Giacobbe, M.G. (Maria Grazia); Fraga, S. (Santiago); Lugliè, A. (Antonella); Bravo, I. (Isabel); Bertozzini, E. (Elena); Vernesi, C. (Cristiano)
The presence of the paralytic shellfish poisoning (PSP) dinoflagellate Alexandrium catenella in the north western (NW) Mediterranean Sea has been known since 1983. From this date on, the species has spread along the Spanish and Italian coastlines. Information concerning A. catenella isolates in the NW Mediterranean Sea was gained through phylogenetic studies. Twenty established toxic cultures of A. catenella taken from various NW Mediterranean Sea locations were analysed by nucleotide sequencing of the 5.8S rDNA and internal transcribed spacer regions. These rDNA ribosomal markers resulted useful in delineating the phylogenetic position of this species in the genus Alexandrium as well as in determining relationships between A. catenella isolates from different geographic areas. The phylogenetic position of the Mediterranean A. catenella ribotype, when compared to the “Alexandrium tamarense/catenella/fundyense species complex”, fits this species complex well. All the Mediterranean A. ...