Antarctic Parborlasia corrugatus

Rachel Grant1, Anton Van de Putte2

1 Dept Animal and Land Science, Hartpury College, ; 2 Antarctic Biodiversity Information Facility (ANTABIF), 

Corresponding author(s): Rachel Grant, Anton Van de Putte (antonarctica@gmail.com)

Received {date}; Revised {date}; Accepted {date}; Published {date}

Citation: Combination of authors, year of data paper publication (in parentheses), Title, Journal Name, Volume, Issue number (in parentheses), and doi of the data paper.

Resource Citation

Thornhill,D.J., Mahon,A.R., Norenburg,J.L. and Halanych,K.M. Molecular Ecology (2008) 17, 5104-5218

Abstract

Open-ocean environments provide few obvious barriers to the dispersal of marine organisms.
Major currents and/or environmental gradients potentially impede gene flow. One
system hypothesized to form an open-ocean dispersal barrier is the Antarctic Polar Front,
an area characterized by marked temperature change, deep water, and the high-flow Antarctic
Circumpolar current. Despite these potential isolating factors, several invertebrate
species occur in both regions, including the broadcast-spawning nemertean worm Parborlasia
corrugatus. To empirically test for the presence of an open-ocean dispersal barrier, we
sampled P. corrugatus and other nemerteans from southern South America, Antarctica, and
the sub-Antarctic islands. Diversity was assessed by analyzing mitochondrial 16S rRNA
and cytochrome c oxidase subunit I sequence data with Bayesian inference and TCS haplotype
network analysis. Appropriate neutrality tests were also employed. Although our
results indicate a single well-mixed lineage in Antarctica and the sub-Antarctic, no evidence
for recent gene flow was detected between this population and South American P. corrugatus.
Thus, even though P. corrugatus can disperse over large geographical distances, physical
oceanographic barriers (i.e. Antarctic Polar Front and Antarctic Circumpolar Current)
between continents have likely restricted dispersal over evolutionary time. Genetic
distances and haplotype network analysis between South American and Antarctic/
sub-Antarctic P. corrugatus suggest that these two populations are possibly two cryptic species.

Keywords: Occurrence

General description

Additional information: marine, harvested by iOBIS

Data published through GBIF: http://ipt.biodiversity.aq/resource?r=rachel_parborlasia_corrugatus

Taxonomic coverage

General taxonomic coverage description: urn:lsid:marinespecies.org:taxname:1053
Taxonomic ranks
Phylum: Nemertina [Ribbon worms]

Spatial coverage

General spatial coverage: Antarctica
Coordinates: 70°0'0''S and 50°0'0''S Latitude; 70°0'0''W and 5°0'0''E Longitude 

Temporal coverage: January 1, 2004

Datasets

Dataset description
Object name: Darwin Core Archive Antarctic Parborlasia corrugatus
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: http://ipt.biodiversity.aq/archive.do?r=rachel_parborlasia_corrugatus
Publication date of data: 2018-10-04
Language: English
Licences of use: Creative Commons Attribution (CC-BY) 4.0 License

External datasets

Dataset description
Object name: Online dataset
Character encoding: UTF-8
Format name: Plain Text
Distribution: http://www.iobis.org/mapper/?dataset=1605

Dataset description
Object name: Metadata
Character encoding: UTF-8
Format name: XMl
Distribution: http://www.vliz.be/imis/imis.php?module=dataset&dasid=2002

Metadata language: English
Date of metadata creation: 2013-08-07
Hierarchy level: Dataset