Integrated Publishing Toolkit(IPT)

free and open access to biodiversity data

Antarctic fish Gobionotothen gibberifrons

This dataset has never been published

The diversification of the teleost suborder Notothenioidei (Perciformes) in Antarctic waters provides one of the most striking examples of a marine adaptive radiation. Along with a number of adaptations to the cold environment, such as the evolution of antifreeze glycoproteins, notothenioids diversified into eight families and at least 130 species. Here, we investigate the genetic population structure of the humped rockcod (Gobionotothen gibberifrons), a benthic notothenioid fish. Six populations were sampled at different locations around the Scotia Sea, comprising a large part of the species’ distribution range (N = 165). Our analyses based on mitochondrial DNA sequence data (352 bp) and eight microsatellite markers reveal a lack of genetic structuring over large geographic distances (¦ST £ 0.058, FST £ 0.005, P values nonsignificant). In order to test whether this was due to passive larval dispersal, we used GPS-tracked drifter trajectories, which approximate movement of passive surface particles with ocean currents. The drifter data indicate that the Antarctic Circumpolar Current (ACC) connects the sampling locations in one direction only (west–east), and that passive transport is possible within the 4-month larval period of G. gibberifrons. Indeed, when applying the isolation-with-migration model in IMA, strong unidirectional west-east migration rates are detected in the humped rockcod. This leads us to conclude that, in G. gibberifrons, genetic differentiation is prevented by gene flow via larval dispersal with the ACC. Keywords: adaptive radiation, population genetics, isolation-with-migration model, drifters

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 162 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 162 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:

Matschiner,M., Hanel,R. and Salzburger,W. Gene flow by larval dispersal in the Antarctic notothenioid fish Gobionotothen gibberifrons Mol. Ecol. 18 (12), 2574-2587 (2009)

Rights

Researchers should respect the following rights statement:

Freely available if cited

GBIF Registration

This resource has not been registered with GBIF

Keywords

Drifters; Population genetics

External data

The resource data is also available in other formats

Online datasethttp://www.iobis.org/mapper/?dataset=1590
Metadatahttp://www.vliz.be/imis/imis.php?module=dataset&dasid=2001

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:11676

Superclass  Pisces [Fish]

Additional Metadata

Alternative Identifiers http://ipt.biodiversity.aq/resource.do?r=rachel_gobionotothen_gibberifrons
7b5e800e-f762-11e1-a439-00145eb45e9a