Dernière mise à jour le : 1 janvier 2012

Four new exotic red seaweeds on European shores


We report the occurrence of four red macroalgae new to Europe. Two species were unambiguously determined to the species level with a DNA barcoding approach, while the remaining two species could only be assigned to a genus. Gelidium vagum was found in the Oosterschelde estuary the Netherlands). Gracilariopsis chorda, Chondracanthus sp. and Solieria sp. were found in the Gulf of Morbihan in Brittany (France); Solieria sp. was also subsequently observed in the Thau Lagoon (France). Gelidium vagum and Gracilariopsis chorda are species originating from the north-western Pacific, around the Japanese archipelago. Phylogenetic analyses also show a likely Pacific origin for Chondracanthus sp. and Solieria sp. Three of these species are likely to have been introduced after 2008, indicating some active transport pathways between the Pacific and the north-eastern Atlantic. These findings also underline the importance of consistent and continuous local expertise (versus rapid assessment) in early warning systems.


keyboard_arrow_right Titre : Four new exotic red seaweeds on European shores
keyboard_arrow_right Type de documentation : Articles
keyboard_arrow_right Auteur(s) personne(s) : Le roux, Auguste, Stegenga, Herre, Verlaque, Marc, Maggs, Christine a., MINEUR, Frederic
keyboard_arrow_right Date de publication : 1 janvier 2012
keyboard_arrow_right Editeur(s) : Springer Verlag
keyboard_arrow_right Tags thématiques : algue, espèce exotique, protection du paysage, écologie marine
keyboard_arrow_right Localisation : Parc naturel régional du golfe du Morbihan
keyboard_arrow_right Langue : Anglais
keyboard_arrow_right Collection : Biological Invasions

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