The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?

Members 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 exte...

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Autores principales:	Randi S Huusgaard, Bent Vismann, Michael Kühl, Martin Macnaugton, Veronica Colmander, Greg W Rouse, Adrian G Glover, Thomas Dahlgren, Katrine Worsaae
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f1e703ec07d84d6cba65711bbaf47a6c
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spelling	oai:doaj.org-article:f1e703ec07d84d6cba65711bbaf47a6c2021-11-18T07:20:53ZThe potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?1932-620310.1371/journal.pone.0035975https://doaj.org/article/f1e703ec07d84d6cba65711bbaf47a6c2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22558289/?tool=EBIhttps://doaj.org/toc/1932-6203Members 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 O(2) depletion, and build-up of potentially toxic sulphide. We measured the O(2) 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 O(2) 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 O(2) consumption that exceeded the average O(2) 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 O(2) demand due to aerobic heterotrophic endosymbionts.Randi S HuusgaardBent VismannMichael KühlMartin MacnaugtonVeronica ColmanderGreg W RouseAdrian G GloverThomas DahlgrenKatrine WorsaaePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 4, p e35975 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Randi S Huusgaard Bent Vismann Michael Kühl Martin Macnaugton Veronica Colmander Greg W Rouse Adrian G Glover Thomas Dahlgren Katrine Worsaae The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?
description	Members 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 O(2) depletion, and build-up of potentially toxic sulphide. We measured the O(2) 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 O(2) 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 O(2) consumption that exceeded the average O(2) 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 O(2) demand due to aerobic heterotrophic endosymbionts.
format	article
author	Randi S Huusgaard Bent Vismann Michael Kühl Martin Macnaugton Veronica Colmander Greg W Rouse Adrian G Glover Thomas Dahlgren Katrine Worsaae
author_facet	Randi S Huusgaard Bent Vismann Michael Kühl Martin Macnaugton Veronica Colmander Greg W Rouse Adrian G Glover Thomas Dahlgren Katrine Worsaae
author_sort	Randi S Huusgaard
title	The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?
title_short	The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?
title_full	The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?
title_fullStr	The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?
title_full_unstemmed	The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?
title_sort	potent respiratory system of osedax mucofloris (siboglinidae, annelida)--a prerequisite for the origin of bone-eating osedax?
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/f1e703ec07d84d6cba65711bbaf47a6c
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The potent respiratory system of Osedax mucofloris (Siboglinidae, Annelida)--a prerequisite for the origin of bone-eating Osedax?

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