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Dinophysoid dinoflagellates from subphotic depths: Amphisolenia sp. aff. brevicauda, Dinofurcula tricornuta sp. nov., and Dinophysis profunda sp. nov. (Dinophysales, Dinophyceae)

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Abstract

Three species of dinophysoid planktonic dinoflagellates are described from the eastern Mediterranean Sea. Amphisolenia sp. aff. brevicauda was collected at 70-m depth in the Ionian Sea. This small species showed a more asymmetric midbody and a proportionally longer neck when compared to the closer relative A. brevicauda. Three individuals of Dinofurcula tricornuta sp. nov. collected at 154-m depth in the Marmara Sea are characterized by three posterior-oriented processes when compared to its congeneric species. This is the first record of the genus Dinofurcula beyond the eastern tropical Pacific Ocean. Dinophysis profunda sp. nov. collected at 500-m depth in the Ionian Sea is characterized by ovate hypotheca and a serrate crest-like left sulcal list when compared to its close relative D. alata. These findings evidence an undescribed biodiversity in the under-sampled subphotic depths.

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6 Data Availability Statement

All data generated and/or analyzed during this study are included in this published article.

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7 Acknowledgment

I thank P. López-García for sampling, and L. Gasperini and G. Bortoluzzi of the Istituto di Geologia Marina (ISMAR), CNR, Bolonia (Italy) for allowing to participate in the MARM10_02 R/V Urania cruise. I thank R. J. Gast for her improvements in the text.

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Authors and Affiliations

  1. Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, 73100, Italy

    Fernando Gómez

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  1. Fernando Gómez
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Correspondence to Fernando Gómez.

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Supported by the Spanish Ministry of Science and Technology (No. MEC2007#0213), the French CNRS ANR Biodiversity program ‘Aquaparadox’ (No. ANR-07-BDIV-004), and the Spanish Ministry of Science and Technology (No. JCI-2010-08492)

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Gómez, F. Dinophysoid dinoflagellates from subphotic depths: Amphisolenia sp. aff. brevicauda, Dinofurcula tricornuta sp. nov., and Dinophysis profunda sp. nov. (Dinophysales, Dinophyceae). J. Ocean. Limnol. 40, 703–711 (2022). https://doi.org/10.1007/s00343-021-0463-9

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