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Cold seep biogenic carbonate crust in the Levantine basin is inhabited by burrowing Phascolosoma aff. turnerae, a sipunculan worm hosting a distinctive microbiota
Rubin-Blum, M.; Shemesh, E.; Goodman-Tchernov, B.; Coleman, D.F.; Ben-Avraham, Z.; Tchernov, D. (2014). Cold seep biogenic carbonate crust in the Levantine basin is inhabited by burrowing Phascolosoma aff. turnerae, a sipunculan worm hosting a distinctive microbiota. Deep-Sea Res., Part 1, Oceanogr. Res. Pap. 90: 17-26. https://dx.doi.org/10.1016/j.dsr.2014.04.014
In: Deep-Sea Research, Part I. Oceanographic Research Papers. Elsevier: Oxford. ISSN 0967-0637; e-ISSN 1879-0119, more
Peer reviewed article  

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Keywords
    Marine Sciences
    Marine Sciences > Biodiversity
    Marine Sciences > Marine Genomics
    Scientific Community
    Scientific Publication
    Marine/Coastal
Author keywords
    bTEFAP; Cold seep; Cryptic; E/V Nautilus; Mediterranean; Sipuncula

Project Top | Authors 
  • Association of European marine biological laboratories, more

Authors  Top 
  • Rubin-Blum, M.
  • Shemesh, E.
  • Goodman-Tchernov, B.
  • Coleman, D.F.
  • Ben-Avraham, Z.
  • Tchernov, D.

Abstract
    Biogenic calcium carbonate crusts represent a cryptic habitat that is often associated with hydrocarbon seeps. Most biological observations of these crusts concern the external surfaces and the fauna inhabiting their inner cavities are generally neglected. Exposed carbonates in areas of active seepage at the 1100-m-deep base of the Palmachim slumping feature in the Levantine basin are intensively burrowed by metazoans, especially by sipunculans (peanut worms), identified by genetic and morphological markers as a potentially novel Phascolosoma sp., closely related to Phascolosoma turnerae (Rice, 1985) and named here P. aff. turnerae. Bacterial 16S-based tag encoded FLX amplicon pyrosequencing (bTEFAP) was utilized to analyze the bacterial community associated with P. aff. turnerae. We compared the bacterial community structure in P. aff. turnerae to the bacterial community structure associated with the sediment–water interface in adjacent gas seeps and in biofilm covering the carbonate crust hosting the sipunculan. A distinctive microbiota, capable of chemosynthesis and sulfide detoxification, was found in association with P. aff. turnerae.

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