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Taxonomic reassessment of Polysiphonia foetidissima (Rhodomelaceae, Rhodophyta) and similar species, including P. schneideri, a newly introduced species in Europe

Author:
Díaz-Tapia, Pilar, Sook Kim, Myung, Secilla, Antonio, Bárbara, Ignacio, Cremades, Javier
Source:
European journal of phycology 2013 v.48 no.4 pp. 345-362
ISSN:
1469-4433
Subject:
Polysiphonia, aquaculture, introduced species, taxonomy, Bermuda, Iberian Peninsula, Spain, United Kingdom
Abstract:
Morphological and molecular studies were carried out on two Polysiphonia with 6–9 pericentral cells from the Atlantic Iberian Peninsula. A detailed description is provided for P. foetidissima, a poorly known species originally described from the UK that is widespread and abundant in the Iberian Peninsula. Polysiphonia schneideri , originally described from Atlantic U.S.A. and Bermuda, is reported for the first time in Europe (Southern Spain). It was collected attached to man-made structures such as floating docks and artificial substrata for aquaculture and is believed to be a newly introduced species in Europe. In addition, the taxonomy of seven morphologically similar Polysiphonia was reassessed. A comparative study of type materials showed that the Mediterranean P. stuposa is morphologically different from its alleged synonym P. foetidissima . Instead, molecular and morphological evidence showed that P. foetidissima is a synonym of the widely reported (Atlantic and Pacific) P. tepida. Polysiphonia foetidissima was also shown to differ from P. brodiei, P. exilis, P. isogona and P. schneideri .
Agid:
1226484