Biological Invasions

, Volume 14, Issue 8, pp 1635–1641 | Cite as

Four new exotic red seaweeds on European shores

  • Frédéric Mineur
  • Auguste Le Roux
  • Herre Stegenga
  • Marc Verlaque
  • Christine A. Maggs
Invasion note

Abstract

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.

Keywords

Marine macroalgae Rhodophytes Oyster farming Vectors Brittany Oosterschelde estuary Thau Lagoon 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Frédéric Mineur
    • 1
    • 4
  • Auguste Le Roux
    • 2
  • Herre Stegenga
    • 3
  • Marc Verlaque
    • 4
  • Christine A. Maggs
    • 1
  1. 1.School of Biological SciencesQueen’s University of BelfastBelfastUK
  2. 2.Impasse de Mouettes 1VannesFrance
  3. 3.RijksherbariumLeidenThe Netherlands
  4. 4.Mediterranean Institute of Oceanography (MIO)Aix-Marseille UniversityMarseille cedex 09France

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