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Does sulphide detoxication occur in the gills of the hydrothermal vent shrimp, Rimicaris exoculata?

TitreDoes sulphide detoxication occur in the gills of the hydrothermal vent shrimp, Rimicaris exoculata?
Type de publicationJournal Article
Year of Publication2002
AuteursCompère, P, Martinez, A-S, Charmantier-Daures, M, Toullec, J-Y, Goffinet, G, Gaill, F
JournalC R Biol
Volume325
Ticket5
Pagination591-6
Date Published2002 May
ISSN1631-0691
Mots-clésAnimals, bacteria, Decapoda (Crustacea), Gills, Inactivation, Metabolic, Mitochondria, Organelles, Oxidation-Reduction, Sulfides, Symbiosis, Temperature
Résumé

Ultrastructural observations of the gills of the hydrothermal vent shrimp Rimicaris exoculata reveal that the epithelial cells contain numerous mitochondria clustered around unusual organelles (diameter of 0.7 to 2.5 microns) containing membrane stacks. These organelles were termed sulphide-oxidising bodies (SOBs) by structural analogy with organelles observed in the tissues of species adapted to sulphide-rich environments. Moreover, in the gills of R. exoculata, mitochondria display numerous electron-dense granules in their stroma. Such ultrastructural features suggest that sulphide detoxication may probably occur in the gills of R. exoculata. Comparable structures were also described in the gills of other hydrothermal vent species, as the alvinellid Pompeii worms that, as R. exoculata, are housing ectosymbiotic bacteria.

Alternate JournalC. R. Biol.
Identifiant (ID) PubMed12187645