Antarctic fish Gobionotothen gibberifrons

Rachel Grant1, Anton Van de Putte2

1 ; 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

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)

Abstract

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

Keywords: Drifters, Population genetics, Occurrence

General description

Additional information: marine, harvested by iOBIS

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

Taxonomic coverage

General taxonomic coverage description: urn:lsid:marinespecies.org:taxname:11676
Taxonomic ranks
Superclass: Pisces [Fish]

Spatial coverage

General spatial coverage: Antarctica
Coordinates: 90°0'0''S and 90°0'0''N Latitude; 180°0'0''W and 180°0'0''E Longitude 

Datasets

Dataset description
Object name: Darwin Core Archive Antarctic fish Gobionotothen gibberifrons
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: http://ipt.biodiversity.aq/archive.do?r=rachel_gobionotothen_gibberifrons
Publication date of data: 2018-07-20
Language: English
Licences of use: Creative Commons Attribution (CC-BY) 4.0 License

External datasets

Dataset description
Object name: Online dataset
Character encoding: US-ASCII
Format name: Plain Text
Distribution: http://www.iobis.org/mapper/?dataset=1590

Dataset description
Object name: Metadata
Character encoding: UTF-8
Format name: XML
Distribution: http://www.vliz.be/imis/imis.php?module=dataset&dasid=2001

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