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Plectroninia celtica n. sp. (Calcarea, Minchinellidae), a new species of “pharetronid” sponge from bathyal depths in the northern Porcupine Seabight, NE Atlantic

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Abstract

Recent pharetronid sponges were regarded as relict species in tropical and subtropical waters, inhabiting cryptic habitats on coral reefs and in caves. More recent findings of a new species of the genus Plectroninia off northern Norway, with an inner fused skeleton have changed that view. Recent investigations on the sponge fauna of the “Propeller Mound”, northern Porcupine Seabight, focusing on sponges growing on the azooxanthellate cold-water coral Lophelia pertusa (Linné 1758) and Madrepora oculata Linné 1758, established the presence of a species of Plectroninia new to science. Its status as a common species within this deep-water coral habitat and the general status of the genus Plectroninia are discussed.

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Acknowledgements

The work was part of the ACES Project (EVK3-CT1999-00008) within the 5th European Framework Programme and supports the biodiversity assessment of the ESF-DFG EUROMARGINS MoundForce Project (Fr 1134/8). Sincere thanks to the captain and crew of RV Poseidon for their professional support during the cruises 265 (2000) and 292 (2002), to Boris Dorschel for providing the 3D-bathymetry map and to IFREMER for the permission to use the Victor 6000-photography (Fig. 1c) from the CARACOLE cruise in 2001. The authors express their thanks to two anonymous reviewers who provided constructive comments

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Authors and Affiliations

  1. Martin Ryan Institute, National University of Ireland Galway, Galway, Republic of Ireland

    Gerd Könnecker

  2. Institute of Paleontology, University Erlangen-Nürnberg, Loewenichstr. 28, D-91054, Erlangen, Germany

    André Freiwald

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  1. Gerd Könnecker
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  2. André Freiwald
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Correspondence to Gerd Könnecker.

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Könnecker, G., Freiwald, A. Plectroninia celtica n. sp. (Calcarea, Minchinellidae), a new species of “pharetronid” sponge from bathyal depths in the northern Porcupine Seabight, NE Atlantic. Facies 51, 53–59 (2005). https://doi.org/10.1007/s10347-005-0068-3

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  • DOI: https://doi.org/10.1007/s10347-005-0068-3

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