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Articles

Coscinodiscus perforatus revisited and compared with Coscinodiscus radiatus (Bacillariophyceae)

, &
Pages 514-524 | Received 15 Jan 2009, Accepted 08 Mar 2010, Published online: 23 Apr 2019
 

Abstract

Sar E.A., Sunesen I. and Jahn R. 2010. Coscinodiscus perforatus revisited and compared with Coscinodiscus radiatus (Bacillariophyceae). Phycologia 49: 514–524. DOI: 10.2216/09-03.1

The present study is devoted to the morphology, taxonomy and distribution of Coscinodiscus perforatus Ehrenberg and Coscinodiscus radiatus Ehrenberg. Coscinodiscus perforatus was erected by Ehrenberg on the basis of sediment material collected from Richmond, Virginia. Subsequently, several authors considered this taxon a synonym of C. radiatus. An examination of the type material of C. perforatus was carried out with scanning electron microscopy and a lecto- and epitype were chosen. The information obtained was substantiated and supplemented by examination of recent plankton material from Buenos Aires (Argentina) coastal waters. On the basis of these analyses the description of C. perforatus was emended and compared with the closely related C. radiatus.

ACKNOWLEDGMENTS

We thank Dr. Andrés Boltovskoy for helping us with the Russian translation, and two anonymous reviewers and Dr. Mark Edlund for improving our manuscript. The electron microscopy was done in the Servicio de Microscopía Electrónica of the Facultad de Ciencias Naturales y Museo with the kind help of Lic. Rafael Urréjola. The work in the Ehrenberg Collection, curated by David Lazarus, was financed by the German Federal Ministry of Education and Research, BMBF (AlgaTerra project, grant 01 LC 0026, within the BIOLOG program). The research was supported by a grant from the CONICET, PIP 5312.

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