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Demosponges from the Northern Mid-Atlantic Ridge shed more light on the diversity and biogeography of North Atlantic deep-sea sponges
Cardenas, P.; Rapp, H.T. (2015). Demosponges from the Northern Mid-Atlantic Ridge shed more light on the diversity and biogeography of North Atlantic deep-sea sponges. J. Mar. Biol. Ass. U.K. 95(Spec. Issue 7): 1475-1516. http://hdl.handle.net/10.1017/S0025315415000983
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, meer
Peer reviewed article  

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Trefwoorden
    Classification > Taxonomy
    Taxa > Species > New taxa > New species
    Demospongiae [WoRMS]; Geodia Lamarck, 1815 [WoRMS]; Porifera [WoRMS]; Tetractinellida [WoRMS]
    A, Mid-Atlantic Ridge [Marine Regions]; ANE, Charlie-Gibbs Fracture Zone [Marine Regions]
    Marien
Author keywords
    amphi-Atlantic; MAR-Eco;

Auteurs  Top 
  • Cardenas, P.
  • Rapp, H.T.

Abstract
    In July-August 2004, the Mid-Atlantic Ridge Ecosystems (MAR-Eco) expedition collected Demospongiae (Porifera) from the Northern Mid-Atlantic Ridge (MAR) north of the Azores, between 41°N and 61°N. Demosponges were found at 10 stations, at depths ranging from 753 to 3046 m. Twenty-two species were identified: 17 Tetractinellida, one Polymastiida, one Suberitida, two Poecilosclerida and one Dendroceratida. The study of this material is an opportunity to revise the taxonomy and the North Atlantic distribution of each of these deep-sea species. Some species are particularly rare and poorly known (Tetilla longipilis, Tetilla sandalina, Craniella azorica, Polymastia corticata) and two are new to science: Forcepia (Forcepia) toxafera sp. nov. and Iotroata paravaridens sp. nov. This study suggests that the MAR is not a longitudinal barrier for the dispersal of deep-sea demosponges while on the contrary, the Charlie-Gibbs Fracture Zone (CGFZ) may be a latitudinal border for the dispersal of deep-sea demosponges, due to great depths and currents.

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