Show simple item record

dc.contributor.authorHuusgaard, Randi S.eng
dc.contributor.authorVismann, Benteng
dc.contributor.authorKühl, Michaeleng
dc.contributor.authorMacnaugton, Martineng
dc.contributor.authorColmander, Veronicaeng
dc.contributor.authorRouse, Greg W.eng
dc.contributor.authorGlover, Adrian G.eng
dc.contributor.authorDahlgren, Thomaseng
dc.contributor.authorWorsaae, Katrineeng
dc.PublishedPLoS ONE 7(4): e35975eng
dc.description.abstractMembers of the conspicuous bone-eating genus, Osedax, are widely distributed on whale falls in the Pacific and Atlantic Oceans. These gutless annelids contain endosymbiotic heterotrophic bacteria in a branching root system embedded in the bones of vertebrates, whereas a trunk and anterior palps extend into the surrounding water. The unique life style within a bone environment is challenged by the high bacterial activity on, and within, the bone matrix possibly causing O2 depletion, and build-up of potentially toxic sulphide. We measured the O2 distribution around embedded Osedax and showed that the bone microenvironment is anoxic. Morphological studies showed that ventilation mechanisms in Osedax are restricted to the anterior palps, which are optimized for high O2 uptake by possessing a large surface area, large surface to volume ratio, and short diffusion distances. The blood vascular system comprises large vessels in the trunk, which facilitate an ample supply of oxygenated blood from the anterior crown to a highly vascularised root structure. Respirometry studies of O. mucofloris showed a high O2 consumption that exceeded the average O2 consumption of a broad line of resting annelids without endosymbionts. We regard this combination of features of the respiratory system of O. mucofloris as an adaptation to their unique nutrition strategy with roots embedded in anoxic bones and elevated O2 demand due to aerobic heterotrophic endosymbionts.en_US
dc.publisherPublic Library of Scienceeng
dc.rightsAttribution CC BYeng
dc.titleThe Potent Respiratory System of Osedax mucofloris (Siboglinidae, Annelida) - A Prerequisite for the Origin of Bone-Eating Osedax?eng
dc.typePeer reviewedeng
dc.typeJournal articleeng
dc.rights.holderCopyright 2012 Huusgaard et al.

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution CC BY
Except where otherwise noted, this item's license is described as Attribution CC BY