Cristin-resultat-ID: 1393268
Sist endret: 20. august 2017 11:32
NVI-rapporteringsår: 2016
Resultat
Vitenskapelig artikkel
2016

Carnivorous sponges (Porifera, Cladorhizidae) from the Southwest Indian Ocean Ridge seamounts

Bidragsytere:
  • Jon Thomassen Hestetun
  • Hans Tore Rapp og
  • Joana R. Xavier

Tidsskrift

Deep-sea research. Part II, Topical studies in oceanography
ISSN 0967-0645
e-ISSN 1879-0100
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2016
Publisert online: 2016
Trykket: 2017
Volum: 137
Sider: 166 - 189

Importkilder

Scopus-ID: 2-s2.0-84962635402

Finansiering

  • Norges forskningsråd

    • Prosjektkode: 179560

Beskrivelse Beskrivelse

Tittel

Carnivorous sponges (Porifera, Cladorhizidae) from the Southwest Indian Ocean Ridge seamounts

Sammendrag

The family Cladorhizidae (Porifera) comprises a particularly interesting group of sponges that has developed a carnivorous feeding strategy unique within the phylum. Cladorhizids are typically considered deep-sea sponges, are frequently found at oceanic ridges and seamount systems, and new species are continuously discovered as new areas are explored. In this study we describe nine new cladorhizid sponges collected on three seamounts of the Southwest Indian Ocean Ridge (SWIOR) during the RRS “James Cook” cruise JC066: Abyssocladia boletiphora, Ab. corniculiphora, Ab. hemiradiata, Asbestopluma (Asbestopluma) unguiferata, As. (A.) jamescooki, As. (A.) laminachela, As. (A.) pseudoisochela, As. (A.) ramuscula and Chondrocladia (Meliiderma) rogersi; and re-describe four species, viz. Ab. symmetrica, Ch. (M.) stipitata, Cladorhiza moruliformis and Cl. tridentata collected during the “Challenger” expedition in the Southwest Indian Ocean. Barcodes and a phylogenetic analysis showing the systematic position of the new species are included as additional information. Our results show that the cladorhizid fauna of the Southwestern Indian Ocean is diverse and seems to be bathymetrically structured with no observed overlap between the newly reported upper bathyal species (~1000 m) and previously described lower bathyal and abyssal species from the area. While the upper bathyal SWIOR species are unique and represent a regionally endemic cladorhizid fauna, similarities in morphology and spicule characters as well as molecular evidence suggests biogeographical affinities to species from the SW Pacific and SW Atlantic, but no similarities to previously reported Antarctic fauna were found. A table of cladorhizid species from the Southwest Indian Ocean and neighboring areas is provided.

Bidragsytere

Jon Thomassen Hestetun

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen
  • Tilknyttet:
    Forfatter
    ved SFF - Senter for geobiologi ved Universitetet i Bergen

Hans Tore Rapp

  • Tilknyttet:
    Forfatter
    ved SFF - Senter for geobiologi ved Universitetet i Bergen
  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen
  • Tilknyttet:
    Forfatter
    ved Uni Research Miljø ved NORCE Norwegian Research Centre AS

Joana R Xavier

Bidragsyterens navn vises på dette resultatet som Joana R. Xavier
  • Tilknyttet:
    Forfatter
    ved SFF - Senter for geobiologi ved Universitetet i Bergen
  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen
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