Cryptic speciation and the circumpolarity debate: A case study on endemic Southern Ocean octopuses using the COI barcode of life

被引：107

作者：

Allcock, A. Louise ^{[1
,2
]}

Barratt, Iain ^{[2
]}

Eleaume, Marc ^{[3
]}

Linse, Katrin ^{[4
]}

Norman, Mark D. ^{[5
]}

Smith, Peter J. ^{[6
]}

Steinke, Dirk ^{[7
]}

Stevens, Darren W. ^{[6
]}

Strugnell, Jan M. ^{[8
]}

机构：

[1] Natl Univ Ireland Galway, Martin Ryan Marine Sci Inst, Galway, Ireland

[2] Queens Univ Belfast, Sch Biol Sci, Belfast BT9 7BL, Antrim, North Ireland

[3] UPMC, Museum Natl Hist Nat, BOREA, USM 401,UMR 7208,IRD 207, F-75005 Paris, France

[4] British Antarctic Survey, NERC, Cambridge CB3 0ET, England

[5] Museum Victoria, Melbourne, Vic 3001, Australia

[6] Natl Inst Water & Atmospher Res NIWA, Wellington 6241, New Zealand

[7] Univ Guelph, Biodivers Inst Ontario, Canadian Ctr DNA Barcoding, Guelph, ON N1G 2W1, Canada

[8] La Trobe Univ, La Trobe Inst Mol Sci, Dept Genet, Bundoora, Vic 3086, Australia

来源：

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY | 2011年 / 58卷 / 1-2期

关键词：

DNA barcoding; Pareledone; Ring species; Circumpolarity; BIOLOGICAL IDENTIFICATIONS; MITOCHONDRIAL LINEAGES; SPECIES IDENTIFICATION; 1905; CEPHALOPODA; DNA BARCODES; WEDDELL SEA; OCTOPODIDAE; REVEALS; RADIATION; DISTANCE;

D O I：

10.1016/j.dsr2.2010.05.016

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

Three hundred and fifty specimens of the endemic Southern Ocean octopus genus Pareledone, were sequenced for the barcoding gene COI. Geographic coverage comprised the South Shetland Islands, the Ross Sea, Adelie Land, George V Land, the Weddell Sea, under the site of the former Larsen B ice shelf, Prydz Bay, the South Orkney Islands and the Amundsen Sea. The greatest number of specimens was captured at the three first-mentioned localities. At least 11 species were represented in the samples and the analyses revealed cryptic species. Six species were found to have extended distributions. Circumpolarity is supported for at least one species. Evidence is presented for a barrier to gene flow to the west of the Antarctic Peninsula, with haplotypes of P. aequipapillae becoming progressively more diverse in a clockwise direction from the South Shetland Islands to the Amundsen Sea. This pattern is akin to that seen in ring species, although we suggest that comparatively warm bottom water acts as a physical barrier preventing completion of the ring. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：242 / 249

页数：8

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