Sertularia marginata (Cnidaria: Hydrozoa) in the Mediterranean: an alien species in expansion?

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Sertularia marginata (Cnidaria: Hydrozoa) in the Mediterranean: an alien species in expansion?

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Title: Sertularia marginata (Cnidaria: Hydrozoa) in the Mediterranean: an alien species in expansion?
Author: González-Duarte, Manuel María; Megina, Cesar; Bethencourt Núñez, Manuel
Departments: Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
xmlui.dri2xhtml.METS-1.0.item-source: Mediterranean Marine Science, 2013, 14/2, 384-389.
Abstract: Mature and dense populations of the tropical hydroid species Sertularia marginata were detected in the Alboran Sea (Western Mediterranean) and along the Atlantic coast of the Strait of Gibraltar. Until now, it had only been recorded in the eastern basin of the Mediterranean Sea. This species has previously been recorded in estuaries and anthropogenic habitats but, in the area studied here, we only found it in natural zones. These observations could indicate early expansion and naturalization in the Mediterranean Sea. Due to its limited dispersion capacity and the history of its records, the observations provided here support the hypothesis of an arrival and a spread by anthropogenic vectors. A pathway of arrival and dispersion of alien species into the Mediterranean Sea is proposed for future monitoring: from Macaronesia (particularly Canary Islands) to the Atlantic coast of the Strait of Gibraltar and from there to the Mediterranean.
Subject: Sertularia marginata ; hydrozoa ; Strait of Gibraltar ; alien species ; Mediterranean Sea.
Handle: http://hdl.handle.net/10498/17509
Date: 2013-06-01

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