FN Archimer Export Format
PT J
TI Limited phylogeographic structure for five bathyal ophiuroids at continental scales
BT 
AF O'HARA, Timothy D.
   ENGLAND, Phillip R.
   GUNASEKERA, Rasanthi M.
   NAUGHTON, Kate M.
AS 1:1;2:2;3:2;4:1;
FF 1:;2:;3:;4:;
C1 Museum Victoria, Melbourne, Vic 3001, Australia.
   CSIRO Wealth Oceans Flagship, Hobart, Tas 7001, Australia.
C2 MUSEUM VICTORIA, AUSTRALIA
   CSIRO, AUSTRALIA
IF 2.566
TC 30
UR https://archimer.ifremer.fr/doc/00760/87200/92854.pdf
LA English
DT Article
CR BIOPAPUA
BO Alis
DE ;Continental slope;Seamounts;Australia;New Zealand;Mitochondrial DNA;Planktotrophy;Lecithotrophy;Viviparity
AB There have been comparatively few large-scale studies on spatial genetic structure of bathyal seafloor fauna, despite the importance of these data to the successful management of the world's oceans. We use a comparative analysis of mitochondrial DNA from five bathyal (200-3500 m) species of brittle-stars (Ophiuroidea) to assess phylogeographic structure along an extensive (8000 km) longitudinal gradient at temperate latitudes (28-56 degrees S) from south-west Australia (113 degrees E) to seamounts east of New Zealand (175 degrees W). We found no evidence of a genetic discontinuity between Australia and New Zealand, either across the temperate Tasman Sea or across the Southern Ocean between the South Tasman Rise and the Macquarie Ridge. However, there were latitudinal phylogeographical breaks between tropical, temperate and polar regions; longitudinal breaks across the eastern Indian Ocean; and a bathymetric break at approximately 1700 m. Although there was limited regional structure in the frequency of haplotype distributions within the major clades, and no clade appeared to be strictly panmictic, the regional structure in general was not concordant with a simple isolation-by-distance model. Demographic structure varied with three clades having a simplified haplotype network, low effective population sizes and no evidence of significant population expansion, and two clades having a high diversity of haplotypes, relatively high effective population sizes and signs of recent population expansion. These results are discussed with respect to putative dispersal strategies. We hypothesise that the 'brooding' species produce both brooded young and pelagic larvae, allowing for both the maintenance of local populations and long-distance dispersal. (C) 2013 Elsevier Ltd. All rights reserved.
PY 2014
PD FEB
SO Deep-sea Research Part I-oceanographic Research Papers
SN 0967-0637
PU Pergamon-elsevier Science Ltd
VL 84
UT 000329960000002
BP 18
EP 28
DI 10.1016/j.dsr.2013.09.009
ID 87200
ER

EF