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The iron-encrusted microbial community of Urothoe poseidonis (Crustacea, Amphipoda)
Gillan, D.C.; Ribesse, J.; De Ridder, C. (2004). The iron-encrusted microbial community of Urothoe poseidonis (Crustacea, Amphipoda). J. Sea Res. 52(1): 21-32. dx.doi.org/10.1016/j.seares.2003.08.009
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414
Peer reviewed article  
Available in  Authors 
Keywords
    Biofilms
    Chemical compounds > Oxygen compounds > Oxides > Iron compounds > Iron oxides
    Interspecific relationships > Epibiosis
    Microorganisms > Bacteria
    Amphipoda [WoRMS]; Bacteria [WoRMS]; Echinocardium cordatum (Pennant, 1777) [WoRMS]; Urothoe Dana, 1852 [WoRMS]; Urothoe poseidonis Reibish, 1905 [WoRMS]
    ANE, France, Nord, Wimereux [Marine Regions]
    Marine/Coastal
Author keywords
    Urothoe; amphipod; epibiosis; biofilm; bacteria; iron oxide
Authors  Top 
  • Gillan, D.C., more
  • Ribesse, J.
  • De Ridder, C.
Abstract
    A rust-coloured coating frequently covers the appendages and sternites of Urothoe poseidonis, an amphipod living in the burrow of the echinoid Echinocardium cordatum. Up to 80% of the collected amphipods were coated. In winter, coated amphipods were always more abundant than uncoated ones. In summer, uncoated specimens predominated. The aspect, location and development of the coating are similar in juveniles and adults. EDAX analyses and Prussian blue testing indicate that the rust-coloured coating contains iron oxyhydroxide minerals with trace metals and phosphorus. Scanning electron microscopy shows that the iron coating harbours bacterial filaments related to Beggiatoaceae (3 morphotypes were observed). Protozoans, possibly Peritrichia of the families Rovinjellidae or Vaginicolidae (one morphotype), were also observed on pereopods VI and VII. The formation of the iron coating and its potential role in the biology of the amphipod are discussed.
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