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DNA barcoding and molecular systematics of the benthic and demersal organisms of the CEAMARC survey.

Agnès Dettaï 1, * Sarah J. Adamowizc 2 Louise Allcock 3, 4 Claudia P. Arango 5 David K.A. Barnes 6 Iain Barratt 4 Anne Chenuil 7 Arnaud Couloux 8 Corinne Cruaud 8 Bruno David 9 Françoise Denis 10 Gaël Denys 11 Angie Díaz 12 Marc Eléaume 13 Jean-Pierre Féral 7 Aurélie Froger 13 Cyril Gallut 1 Rachel Grant 14 Huw J. Griffiths 6 Christoph Held 15 Lenaïg G. Hemery 11 Graham Hosie 16 Piotr Kuklinski 17, 18 Guillaume Lecointre 1 Katrin Linse 6 Pierre Lozouet 1 Christopher Mah 19 Françoise Monniot 11 Mark D. Norman 20 Timothy O'Hara 20 Catherine Ozouf-Costaz 1 Claire Piedallu Benjamin Pierrat 9 Elie Poulin 12 Nicolas Puillandre 1 Martin Riddle 16 Sarah Samadi 1 Thomas Saucède 9 Christoph Schubart 21 Peter J. Smith 22 Darren W. Stevens 22 Dirk Steinke 2 Jan M. Strugnell 23 Katarzyna Tarnowska 7 Victoria Wadley 16 Nadia Améziane 13
Abstract : The Dumont d'Urville Sea (East Antarctic region) has been less investigated for DNA barcoding and molecular taxonomy than other parts of the Southern Ocean, such as the Ross Sea and the Antarctic Peninsula. The Collaborative East Antarctic MARine Census (CEAMARC) took place in this area during the austral summer of 2007e2008. The Australian vessel RSVAurora Australis collected very diverse samples of demersal and benthic organisms. The specimens were sorted centrally, and then distributed to taxonomic experts for molecular and morphological taxonomy and identification, especially barcoding. The COI sequences generated from CEAMARC material provide a sizeable proportion of the Census of Antarctic Marine Life barcodes although the studies are still ongoing, and represent the only source of sequences for a number of species. Barcoding appears to be a valuable method for identification within most groups, despite low divergences and haplotype sharing in a few species, and it is also useful as a preliminary taxonomic exploration method. Several new species are being described. CEAMARC samples have already provided new material for phylogeographic and phylogenetic studies in cephalopods, pycnogonids, teleost fish, crinoids and sea urchins, helping these studies to provide a better insight in the patterns of evolution in the Southern Ocean.
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Agnès Dettaï, Sarah J. Adamowizc, Louise Allcock, Claudia P. Arango, David K.A. Barnes, et al.. DNA barcoding and molecular systematics of the benthic and demersal organisms of the CEAMARC survey.. Polar Science, Elsevier, 2011, 38 (8), pp.298-312. ⟨10.1016/j.polar.2011.02.002⟩. ⟨hal-00614982⟩



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