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Issue: Vol. 4466 No. 1: 31 Aug. 2018
Type: Article
Published: 2018-08-31
DOI: 10.11646/zootaxa.4466.1.15
Page range: 197–204
Abstract views: 94
PDF downloaded: 4

When is an aster not an aster? A new deep-sea Discorhabdella (Demospongiae, Poecilosclerida) with asters, from the Mozambique Channel 

IMBE, CNRS, Aix Marseille Univ, Univ Avignon, IRD, Station Marine d’Endoume, 13007 Marseille, France.
IMBE, CNRS, Aix Marseille Univ, Univ Avignon, IRD, Station Marine d’Endoume, 13007 Marseille, France.
Porifera new species Madagascar bathyal homoplasy

Abstract

Discorhabdella pseudaster n. sp. is an incrusting sponge from the upper bathyal zone of the ‘Banc du Geyser’, north of Madagascar, Mozambique Channel. This new species is described only from a single specimen but it is remarkable by the presence of spicules similar to euasters, a type of microsclere unknown in Poecilosclerida. These spicules are in fact a new example of homoplasy, being derivatives of the typical Discorhabdella pseudoastrose acanthostyles, which are here reduced to the aster-like tyles. The isochelae with a large lamella on the shaft are also quite unique in Poeciloclerida.

 

References

  1. BIOMAGLO Expedition (2017) Available from: https://expeditions.mnhn.fr/campaign/biomaglo (Accessed 30 Aug. 2018)

    Bösraug, E. (1913) Die Tetractinelliden. In: Voeltzkow, A., Reise in Östafrika in den Jahren 1903-1905 mit Mitteln der Herman und Elise geb. Heckmann Wentzel-Stiftung ausgefuhrt von Alfred Voeltzkow, Wissenschaftliche Ergebnisse. E. Schweizerbartsche Verlagsbuchhandlung, Stuttgart, pp. 231–251
    https://doi.org/10.5962/bhl.title.64840

    Cárdenas, P., Pérez, T. & Boury-Esnault, N. (2012) Sponge Systematics facing new challenges. Advances in Marine Biology, 61, 79–209.
    https://doi.org/10.1016/B978-0-12-387787-1.00010-6

    Cárdenas, P. & Rapp, H.T. (2013) Disrupted spiculogenesis in deep-water Geodiidae (Porifera, Demospongiae) growing in shallow waters. Invertebrate Biology, 132, 173–194.
    https://doi.org/10.1111/ivb.12027

    Dendy, A. (1924) Porifera. Part I. Non-Antarctic sponges. Natural History Report. British Antarctic (Terra Nova) Expedition, 1910 (Zoology), 6, 269–392, pls. I–XV.

    Esteves, E.L., Lôbo-Hajdu, G. & Hajdu, E. (2007) Three new species of Crambe (Crambeidae: Poecilosclerida: Demospongiae) from the south-eastern Pacific, with a review of morphological characters for the genus. Journal of the Marine Biological Association of the United Kingdom, 87, 1367–1378.
    https://doi.org/10.1017/S0025315407058110

    Fromont, J.P. & Bergquist, P.R. (1990) Structural characters and their use in sponge taxonomy; when is a sigma not a sigma? In: Rützler, K. (Ed.), New Perspectives in Sponge Biology. Smithsonian Institution Press, Washington, D.C., pp. 273–278.

    Hinde, G.J. & Holmes, W.M. (1892) On the sponge-remains in the lower tertiary strata near Oamaru, Otago, New Zealand. Journal of the Linnean Society of London, Zoology, 24, 177–263.
    https://doi.org/10.1111/j.1096-3642.1892.tb02480.x

    Lévi, C. (1956) Spongiaires des côtes de Madagascar. Mémoires de l'Institut scientifique de Madagascar, 10, 2–23.

    Lévi, C. (1963) Spongiaires d’Afrique du Sud. (1) Poecilosclérides. Transactions of the Royal Society of South Africa, 37, 1–72, pls. I–X.

    Lévi, C. (1964) Spongiaires du canal de Mozambique. Bulletin du Muséum National d'Histoire Naturelle, Paris, 36 (3), 384–395.

    Łukowiak, M. (2015) Late Eocene siliceous sponge fauna of southern Australia: reconstruction based on loose spicules record. Zootaxa, 3917 (1), 1–65.
    https://doi.org/10.11646/zootaxa.3917.1.1

    Maldonado, M. & Benito, J. (1991) Crambe tuberosa n. sp. (Demospongiae, Poecilosclerida): A new Mediterranean poecilosclerid with lithistid affinities. Cahiers de Biologie Marine, 32 (3), 323–332.

    Maldonado, M. & Uriz, M.J. (1996) Skeletal morphology of two controversial poecilosclerid genera (Porifera, Demospongiae): Discorhabdella and Crambe. Helgoländer Wissenschaftliche Meeresuntersuchungen, 50, 369–390.
    https://doi.org/10.1007/BF02367110

    Morrow, C. & Cárdenas, P. (2015) Proposal for a revised classification of the Demospongiae (Porifera). Frontiers in Zoology, 12 (7). [published online]
    https://doi.org/10.1186/s12983-015-0099-8

    Sollas, W.J. (1885) A Classification of the Sponges. Annals and Magazine of Natural History, 5, 395.
    https://doi.org/10.1080/00222938509459901

    Topsent, E. (1890) Notice préliminaire sur les spongiaires recueillis durant les campagnes de l'Hirondelle. Bulletin de la Société Zoologique de France, 15, 26–32, 65–71.
    https://doi.org/10.5962/bhl.part.18721

    Topsent, E. (1927) Diagnoses d'éponges nouvelles recueillies par le Prince Albert ler de Monaco. Bulletin de l'Institut Océanographique, Monaco, 502, 1–19.

    Topsent, E. (1928) Spongiaires de l’Atlantique et de la Méditerranée provenant des croisières du Prince Albert ler de Monaco. Résultats des campagnes scientifiques accomplies par le Prince Albert I, Monaco, 74, 1–376, pls. I–XI.

    Uriz, M.J. & Maldonado, M. (1995) A reconsideration of the relationship between polyaxonid and monaxonid spicules in Demospongiae: new data from the genera Crambe and Discorhabdella. Biological Journal of the Linnean Society, 55, 1–15.
    https://doi.org/10.1016/0024-4066(95)90025-X

    Vacelet, J. & Vasseur, P. (1965) Spongiaires des grottes et surplombs des récifs de Tuléar (Madagascar). Recueil des travaux de la Station Marine d’Endoume, 4 (Supplement), 71–123.

    Vacelet, J. & Vasseur, P. (1971) Eponges des récifs coralliens de Tuléar (Madagascar). Téthys Supplement, 1, 51–126.

    Vacelet, J., Vasseur, P. & Lévi, C. (1976) Spongiaires de la pente externe des récifs coralliens de Tuléar (Sud-Ouest de Madagascar). Mémoires du Muséum national d'Histoire naturelle, A, Zoologie, 49, 1–116.

    Vacelet, J. (1977) Une nouvelle relique du Secondaire: un représentant actuel des Eponges fossiles Sphinctozoaires. Comptes-Rendus de l'Académie des Sciences de Paris, 285, 509–511.

    Vacelet, J. (1979) Description et affinités d'une éponge sphinctozoaire actuelle. In: Lévi, C. & Boury-Esnault, N. (Eds.), Biologie des Spongiaires, Colloques Internationaux du Centre National de la Recherch Scientifique. CNRS, Paris, pp. 483–493.

    Van Soest, R.W.M. (2002) Family Crambeidae Lévi, 1963. In: Hooper, J.N.A. & van Soest, R.W.M. (Eds.), Systema Porifera: A Guide to the classification of Sponges. Kluwer Academic/Plenum Publishers, New York, pp. 547–555.
    https://doi.org/10.1007/978-1-4615-0747-5_58