Limited phylogeographic structure for five bathyal ophiuroids at continental scales
Timothy D O'Hara, Phillip R England, Rasanthi M Gunasekera, Kate M Naughton
Deep Sea Research Part I Oceanographic Research Papers | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2014
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°S) from south-west Australia (113°E) to seamounts east of New Zealand (175°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 a..View full abstract
This project is an output from the Marine Biodiversity Research Hub, funded through the Commonwealth National Environmental Research Program (NERP), and administered through the Australian Government's Department of Sustainability, Environment, Water, Population and Communities. Additional funding was also provided to TOH by the Census of Marine Life field programme CenSeam (a global census of marine life on seamounts) to collect tissues from museum samples in New Zealand and France. We thank the many museum curators and collection mangers who have facilitated access to their collections of ophiuroids, particularly Sadie Mills (National Institute of Water & Atmospheric Research, Wellington), Nadia Ameziane and Marc Eleaume (Museum national d'Histoire naturelle Paris), Sabine Stohr (Swedish Museum of Natural History, Stockholm), Alexander Martynov (Moscow State Museum) and Margaret Packer (Natural History Museum London). We also thank Susanne Lockhart (NOAA South-west Fisheries Science Center) for providing the ICEFISH ophiuroid collection from the South Atlantic; and Alex Rogers (Oxford University) and David Staples (Museum Victoria) for collecting material on the SW Indian Ridge. We also thank Andrew Hugall (Museum Victoria) and three anonymous reviewers for suggesting improvements to draft manuscripts.