Molecular taxonomy of Osedax (Annelida: Siboglinidae) in the Southern Ocean
Molecular taxonomy of Osedax (Annelida: Siboglinidae) in the Southern Ocean
We report the discovery of three new species of Osedax in the deep Southern Ocean, expanding the diversity and geographical range of this genus of bone-eating worms. Osedax rogersi sp. n. and Osedax crouchi sp. n. were found on a whale skeleton at 1444 m in the Kemp Caldera in the East Scotia Sea during the Chemosynthetic Ecosystems of the Southern Ocean (ChEsSo) project. The recently described species, Osedax antarcticus, found on whale bones implanted at a depth of 550–650 m off Smith Island in the Bransfield Strait, was also found inhabiting the whale skeleton in the Kemp Caldera. Osedax crouchi as well as another new species Osedax nordenskjoeldi sp. n. have also been found on the implanted whale bones off Smith Island. These two localities are approximately 1800 km apart demonstrating a wide distribution of species within the genus. We describe the three new species, O. rogersi, O. crouchi and O. nordenskjoeldi and report the second record of O. antarcticus. We also present a new phylogenetic analysis for Osedax, including data examining genetic connectivity between the Scotia Arc and the Bransfield Strait.
405-417
Amon, Diva J.
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Wiklund, Helena
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Dahlgren, Thomas G.
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Copley, Jonathan T.
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Smith, Craig R.
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Jamieson, Alan J.
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Glover, Adrian G.
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July 2014
Amon, Diva J.
b700d27b-4c13-484a-bad6-0be8f753b46d
Wiklund, Helena
7c228af0-33a8-471f-b0f8-bc1e558cf8ed
Dahlgren, Thomas G.
35e04ba6-303d-44d0-ae60-f434977dc0ff
Copley, Jonathan T.
5f30e2a6-76c1-4150-9a42-dcfb8f5788ef
Smith, Craig R.
f930361f-9312-4e0a-9832-26008197eb32
Jamieson, Alan J.
ab7c9067-fe1d-47f9-921f-c57108b6f23c
Glover, Adrian G.
91192a3a-fc25-4c1f-b062-2e4da183272e
Amon, Diva J., Wiklund, Helena, Dahlgren, Thomas G., Copley, Jonathan T., Smith, Craig R., Jamieson, Alan J. and Glover, Adrian G.
(2014)
Molecular taxonomy of Osedax (Annelida: Siboglinidae) in the Southern Ocean.
Zoologica Scripta, 43 (4), .
(doi:10.1111/zsc.12057).
Abstract
We report the discovery of three new species of Osedax in the deep Southern Ocean, expanding the diversity and geographical range of this genus of bone-eating worms. Osedax rogersi sp. n. and Osedax crouchi sp. n. were found on a whale skeleton at 1444 m in the Kemp Caldera in the East Scotia Sea during the Chemosynthetic Ecosystems of the Southern Ocean (ChEsSo) project. The recently described species, Osedax antarcticus, found on whale bones implanted at a depth of 550–650 m off Smith Island in the Bransfield Strait, was also found inhabiting the whale skeleton in the Kemp Caldera. Osedax crouchi as well as another new species Osedax nordenskjoeldi sp. n. have also been found on the implanted whale bones off Smith Island. These two localities are approximately 1800 km apart demonstrating a wide distribution of species within the genus. We describe the three new species, O. rogersi, O. crouchi and O. nordenskjoeldi and report the second record of O. antarcticus. We also present a new phylogenetic analysis for Osedax, including data examining genetic connectivity between the Scotia Arc and the Bransfield Strait.
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e-pub ahead of print date: 14 May 2014
Published date: July 2014
Organisations:
Ocean and Earth Science
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Local EPrints ID: 364940
URI: http://eprints.soton.ac.uk/id/eprint/364940
ISSN: 0300-3256
PURE UUID: ae75c99e-6bcb-4aef-bd76-d5f92a970533
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Date deposited: 15 May 2014 09:43
Last modified: 15 Mar 2024 02:48
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Contributors
Author:
Diva J. Amon
Author:
Helena Wiklund
Author:
Thomas G. Dahlgren
Author:
Craig R. Smith
Author:
Alan J. Jamieson
Author:
Adrian G. Glover
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