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Molecular taxonomy of Osedax (Annelida: Siboglinidae) in the Southern Ocean
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2014 (English)In: Zoologica Scripta, ISSN 0300-3256, E-ISSN 1463-6409, Vol. 43Article in journal (Refereed) Published
Abstract [en]

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 1444m 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 550-650m 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 1800km 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.

Place, publisher, year, edition, pages
2014. Vol. 43
Keyword [en]
north-atlantic marine worms whale-falls deep-sea diversity boneworms patterns Evolutionary Biology Zoology
National Category
Natural Sciences
Research subject
SWEDARP 2007/08, Oden Southern Ocean 2007/08
Identifiers
URN: urn:nbn:se:polar:diva-1881DOI: 10.1111/zsc.12057OAI: oai:DiVA.org:polar-1881DiVA: diva2:810845
Note

ISI Document Delivery No.: AJ4BD Times Cited: 2 Cited Reference Count: 30 Amon, Diva J. Wiklund, Helena Dahlgren, Thomas G. Copley, Jonathan T. Smith, Craig R. Jamieson, Alan J. Glover, Adrian G. Copley, Jonathan/I-7076-2012 Copley, Jonathan/0000-0003-3333-4325 Swedish Research Council; Swedish Polar Research Secretariat; NERC Consortium Grant [NE/DO1249X/1]; US NSF OPP [0732711] The authors wish to thank the Masters and crews of the RRS James Cook, Icebreaker Oden and the RV Laurence M. Gould for their tremendous support during the fieldwork in the Southern Ocean. Further thanks to the principal scientists, scientists and technicians on board the three vessels mentioned above, especially Dr. Kirsty Kemp for her work in deploying the landers near Smith Island. Some of the substrates for the experiments were provided by Dr. Bjorn Kallstrom. Thomas Dahlgren was funded by the Swedish Research Council and the Swedish Polar Research Secretariat. The ChEsSo research programme was funded by a NERC Consortium Grant (NE/DO1249X/1), which is also gratefully acknowledged. US NSF OPP-grant number 0732711 to Craig Smith supported the bones bone-lander recoveries on the RV Laurence M. Gould. This is UH SO-EST publication number 9108. The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript. 2 Wiley-blackwell Hoboken Evolutionary Biology; Zoology

Available from: 2015-05-08 Created: 2015-05-06 Last updated: 2016-11-21

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