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Botanica Marina

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The invasive seaweed Sargassum filicinum (Fucales, Phaeophyceae) is on the move along the Mexican Pacific coastline

Rafael Riosmena-Rodríguez
  • Programa de Investigación en Botánica Marina, Departamento de Biología Marina, Universidad Autónoma de Baja California Sur, Carretera al sur km 5.5, 23080 La Paz, BCS, México
  • :
/ Ga Hun Boo
  • Department of Biology, Chungnam National University, Daejeon 305-764, South Korea
/ Juan Manuel López-Vivas
  • Programa de Investigación en Botánica Marina, Departamento de Biología Marina, Universidad Autónoma de Baja California Sur, Carretera al sur km 5.5, 23080 La Paz, BCS, México
/ Arturo Hernández-Velasco
  • Comunidad y Biodiversidad A.C. Francisco I. Madero # 2054 Local C, entre Rosales y Allende, Colonia Centro, 23000 La Paz, BCS, México
/ Andrea Sáenz-Arroyo
  • Comunidad y Biodiversidad A.C. Francisco I. Madero # 2054 Local C, entre Rosales y Allende, Colonia Centro, 23000 La Paz, BCS, México
/ Sung Ming Boo
  • Department of Biology, Chungnam National University, Daejeon 305-764, South Korea
Published Online: 2012-08-28 | DOI: https://doi.org/10.1515/bot-2012-0120

Abstract

Sargassum filicinum Harvey is an important ecological engineer in the subtidal regions of northeastern Asian waters, as it forms marine forests that provide shelter for invertebrates and fishes. First discovered in Long Beach Harbor, CA, USA, in 2003, S. filicinum was thought to occur mainly in the California Channel Islands and near Ensenada, Mexico. However, during a survey from 2007 to 2009, we found S. filicinum off Isla Natividad, which is an extension of its range 550 km south of its last recorded location in the Mexican Pacific. Morphological and molecular data support the identification of the species. Considering its faster spread from Ensenada to Isla Natividad (4 years) than Sargassum muticum (14 years), S. filicinum may follow the path of S. muticum and arrive at the subtropical-tropical Pacific coast of Mexico. Although S. muticum has become well established within the local seaweed flora, S. filicinum may replace native Sargassum species and change the composition of local marine floras.

Keywords: Baja California peninsula; invasive macroalgae; Sargassum filicinum; Sargassum muticum

Corresponding author: Rafael Riosmena-Rodríguez, Programa de Investigación en Botánica Marina, Departamento de Biología Marina, Universidad Autónoma de Baja California Sur, Carretera al sur km 5.5, 23080 La Paz, BCS, México


Received: 2012-02-27

Accepted: 2012-07-06

Published Online: 2012-08-28

Published in Print: 2012-10-01


Citation Information: Botanica Marina. Volume 55, Issue 5, Pages 547–551, ISSN (Online) 1437-4323, ISSN (Print) 0006-8055, DOI: https://doi.org/10.1515/bot-2012-0120, August 2012

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