Document Detail

Epibiotic bacteria associated with the recently discovered Yeti crab, Kiwa hirsuta.
MedLine Citation:
PMID:  18564185     Owner:  NLM     Status:  MEDLINE    
The Yeti crab, Kiwa hirsuta Macpherson et al., is the single known species in a recently discovered crab family Kiwaidae (Decapoda: Galatheoidea) from deep-sea hydrothermal vents. Its chelipeds, walking legs and the ventral surface of its cephalothorax are covered with dense setae that, in turn, are covered with clusters of filamentous bacteria, making the crab appear extraordinarily 'hairy'. Electron microscopy revealed dense bacterial clusters attached to the chitinous outer layer of the setae. Molecular phylogenetic analyses revealed the setae-associated bacteria to be dominated by epsilon-Proteobacteria ( approximately 56% of the recovered ribotypes), gamma-Proteobacteria ( approximately 25%) and Bacteroidetes ( approximately 10%). Fluorescence in situ microscopy confirmed the attachment of filamentous epsilon-Proteobacteria on setae, but no specialized morphological structures appeared to exist for bacterial attachment. Key enzymes involved in the reductive tricarboxylic acid cycle (ATP-dependent citrate lyase) and sulfite oxidation or dissimilatory sulfate reduction (bidirectional APS reductase) were detected. Consequently, the potential for carbon fixation and cycling of reduced and oxidized sulfur appear to exist in the dense microflora that grows on the crab's setae.
Shana K Goffredi; William J Jones; Hermann Erhlich; Armin Springer; Robert C Vrijenhoek
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2008-06-28
Journal Detail:
Title:  Environmental microbiology     Volume:  10     ISSN:  1462-2920     ISO Abbreviation:  Environ. Microbiol.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-09-29     Completed Date:  2008-11-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883692     Medline TA:  Environ Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  2623-34     Citation Subset:  IM    
California Institute of Technology, Pasadena, CA, USA.
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Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Animal Structures / microbiology
Anomura / microbiology*
Bacteria / classification*,  genetics,  isolation & purification*
Citric Acid Cycle / genetics
DNA, Bacterial / chemistry,  genetics
DNA, Ribosomal / chemistry,  genetics
Genes, rRNA
Hot Springs
Microscopy, Electron
Molecular Sequence Data
Oxidoreductases Acting on Sulfur Group Donors / genetics
RNA, Bacterial / genetics
RNA, Ribosomal, 16S / genetics
Sequence Analysis, DNA
Sequence Homology, Nucleic Acid
Reg. No./Substance:
0/DNA, Bacterial; 0/DNA, Ribosomal; 0/RNA, Bacterial; 0/RNA, Ribosomal, 16S; EC 1.8.-/Oxidoreductases Acting on Sulfur Group Donors; EC reductase

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