Article

Biological Invasions

, Volume 6, Issue 3, pp 269-281

Blitzkrieg in a Marine Invasion: Caulerpa racemosa var. cylindracea (Bryopsidales, Chlorophyta) Reaches the Canary Islands (North-East Atlantic)

  • Marc VerlaqueAffiliated withUMR 6540, Centre d'Océanologie de Marseille, Université de la Méditerranée, Parc Scientifique et Technologique de Luminy Email author 
  • , Julio Afonso-CarrilloAffiliated withDepartamento Biologia Vegetal (Botánica), Universidad de La Laguna
  • , M. Candelaria Gil-RodríguezAffiliated withDepartamento Biologia Vegetal (Botánica), Universidad de La Laguna
  • , Christine DurandAffiliated withUMR 6540, Centre d'Océanologie de Marseille, Université de la Méditerranée, Parc Scientifique et Technologique de Luminy
  • , Charles F. BoudouresqueAffiliated withUMR 6540, Centre d'Océanologie de Marseille, Université de la Méditerranée, Parc Scientifique et Technologique de Luminy
  • , Yannick Le ParcoAffiliated withUMR 6540, Centre d'Océanologie de Marseille, Université de la Méditerranée, Parc Scientifique et Technologique de Luminy

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Abstract

On the basis of morphological and genetic studies (rDNA ITS1, 5.8S, ITS2, and a 18S rDNA intron), we confirm here that Caulerpa racemosa var. cylindracea (Sonder) Verlaque, Huisman et Boudouresque, a southwestern Australian taxon recently introduced into the Mediterranean Sea also occurs in the Canary Islands. This is the first report of C. racemosa var. cylindracea in the Atlantic. It was observed for the first time in the Canary Archipelago in 1997–1998. The speed and regional scale of expansion (north Atlantic Ocean and the Mediterranean Sea) of this invasive species appear to be among the most dramatic ever recorded. The possible outcome of this introduction in the Atlantic is discussed.

Atlantic Bryopsidales Canary Islands Caulerpa racemosa introduced species invasive algae 18S intron ITS1–ITS2 marine invasion range expansion