Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
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RIS BIB ENDNOTEDetection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
Publication date: 14.02.2022
Acta Protozoologica, 2021, Volume 60, pp. 47 - 59
https://doi.org/10.4467/16890027AP.21.006.15380Authors
Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
A dinoflagellate identified as Prorocentrum dentatum, P. shikokuense or P. donghaiense is responsible of massive harmful events. Blooms of a species identified as P. shikokuense have been recently reported in the Mediterranean Sea, and an exotic origin, tentatively introduced by ballast waters from Asia, has been hypothesized. The molecular data based on the small-, large subunit, and internal transcriber spacers ribosomal RNA gene (SSU-, LSU-, ITS rRNA) sequences confirmed P. shikokuense in the Mediterranean Sea. The Mediterranean ribotype is identical to a subtropical North Atlantic ribotype, and with slight divergence from the numerous sequences from the Pacific Ocean. To revisit the relationship between P. shikokuense (=P. donghaiense) and P. obtusidens, we provide the first micrographs of P. dentatum and P. obtusidens, the latter collected from the type locality. Our observations indicate that P. dentatum, P. obtusidens, and P. shikokuense are three different species. Their diagnostic morphological characters are: Prorocentrum dentatum is 44–60 μm long, leaf-shaped, pointed and central posterior end, conspicuous anterior shoulder; P. obtusidens is 33–41 μm long, irregular parallelepiped, almost paralel valve margins, eccentric and pointed posterior end, moderate anterior shoulder; and P. shikokuense is 25 μm long, sunflower seed-shaped, round and centric posterior end, inconspicuous anterior shoulder.
Information: Acta Protozoologica, 2021, Volume 60, pp. 47 - 59
Article type: Original article
Université du Littoral Côte d’Opale, Université de Lille, CNRS UMR 8187 LOG, Laboratoire d’Océanologie et de Géosciences, Maison de la Recherche en Environnement Naturel, 32 av. Foch, 62930 Wimereux, France
Carmen Campos Panisse 3, E-11500 Puerto de Santa María, Spain
Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA
CNR-IRET National Research Council - Research Institute on Terrestrial Ecosystems, Via P. Castellino 11, 80131 Napoli, Italy
Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA
Published at: 14.02.2022
Received at: 08.11.2021
Accepted at: 26.01.2022
Article status: Open
Licence: CC BY
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English