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First record of Cordylophora caspia (Hydrozoa: Cnidaria) in the Tagus estuary, central Portugal

Published online by Cambridge University Press:  05 November 2013

Anxo Conde ,
Jorge Domínguez ,
Júlio M. Novais  and
Fran Ramil
Anxo Conde*
Affiliation:
IBB—Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico (IST), 1049-001 Lisbon, Portugal Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Vigo E-36310, Spain
Jorge Domínguez
Affiliation:
Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Vigo E-36310, Spain
Júlio M. Novais
Affiliation:
IBB—Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico (IST), 1049-001 Lisbon, Portugal
Fran Ramil
Affiliation:
Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Vigo E-36310, Spain
*
Correspondence should be addressed to: A. Conde, IBB—Institute for Biotechnology and Bioengineering, Center for Biological and Chemical Engineering, Instituto Superior Técnico (IST), 1049-001 Lisbon, Portugal email: aconde@ist.utl.pt
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Abstract

The Ponto-Caspian hydroid Cordylophora caspia has been found for the first time in the Tagus estuary. There is only one previous citation for this invasive species in Portuguese waters. The colonies of C. caspia were branched and had healthy gastrozooids and gonophores. The specimens were collected from a saline boundary zone characterized by high fluctuations in salinity (maximum of 15.3 and minimum of 0.2) and high suspended solids loading. Cordylophora caspia is capable of colonizing man-made infrastructures such as industrial facilities and can inhabit both brackish and freshwater environments. These features of C. caspia, together with its resilience when in a dormant stage (menonts), indicate that the monitoring of this invasive species is advisable in the Tagus estuary.

Keywords

Cordylophora caspiainvasive speciessalinityturbidityIberian Peninsula
Type
Research Article
Information
Marine Biodiversity Records , Volume 6 , 2013 , e114
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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Footnotes

†

Deceased

References

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