Integrated Publishing Toolkit(IPT)

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Antarctic Parborlasia corrugatus

Latest version published by SCAR - AntOBIS on Aug 7, 2013 SCAR - AntOBIS

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.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 104 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 104 records  (6 KB) - Update frequency: unknown
Metadata as an EML file download (6 KB)
Metadata as an RTF file download (7 KB)

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

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

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is SCAR - AntOBIS. Freely available if cited

GBIF Registration

This resource has not been registered with GBIF

External data

The resource data is also available in other formats

Online datasethttp://www.iobis.org/mapper/?dataset=1605
Metadatahttp://www.vliz.be/imis/imis.php?module=dataset&dasid=2002

Contacts

Who created the resource:

Rachel Grant

Who can answer questions about the resource:

Rachel Grant

Who filled in the metadata:

Anton Van de Putte
Antarctic Biodiversity Information Facility (ANTABIF)
http://data.biodiversity.aq

Geographic Coverage

Antarctica

Bounding Coordinates South West [-90, -180], North East [90, 180]

Taxonomic Coverage

urn:lsid:marinespecies.org:taxname:1053

Phylum  Nemertina [Ribbon worms]

Temporal Coverage

Start Date 2004-01-01

Additional Metadata

Alternative Identifiers http://ipt.biodiversity.aq/resource.do?r=rachel_parborlasia_corrugatus
7b644c6e-f762-11e1-a439-00145eb45e9a