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Antarctic Krill Euphausia superba
W P Goodall-Copestake1, S Pérez-Espona2, M S Clark1, E J Murphy1, P J Seear1 and G A Tarling1(2010) Swarms of diversity at the gene cox1 in Antarctic krill. In press 2010
Contact: Grant, Rachel

Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Swarms of diversity at the gene cox1 in Antarctic krill more

The Antarctic krill, Euphausia superba, is an abundant and key species found in the Southern Ocean that forms dense, discrete swarms. Despite over three decades of research on Antarctic krill, the genetics of individual swarms is yet to be specifically investigated. In this study, we address the genetic diversity, population structure and demographic history of nine Antarctic krill swarms by sequencing 1173 bases of the gene cytochrome c oxidase subunit I (cox1, COI) from 504 individuals. Both haplotype diversity (h=0.9974–1.0000) and nucleotide diversity (À=0.010275–0.011537) of Antarctic krill swarm samples was consistently high compared with populations of other species reported in the literature. Analysis of molecular variance did not show any significant genetic structure, thus implying that the sampled swarms do not appear to reflect discrete genetic units. Fu's Fs and Bayesian Skyride analyses provided strong evidence for a large increase in the population size of Antarctic krill, or selection favouring a particular mitochondrial lineage, within the last few 100 000 years (Pleistocene). The swarm-level results presented in this study not only further our understanding of Antarctic krill biology but, because of the economical importance of this species, also provide data to consider for future krill stock management.

Marine, Antarctica, Euphausia superba Dana, 1850

Geographical coverage
Antarctica [Marine Regions]

Temporal coverage
1 January 2003

Taxonomic coverage
Euphausia superba Dana, 1850 [WoRMS]

Genetic DNA sequence

Natural Environment Research Council; British Antarctic Survey (BAS), more

Related datasets
Published in:
AntOBIS: Antarctic Ocean Biogeographic Information System, more

Based on this dataset:
Goodall-Copestake, W.P. et al. (2010). Swarms of diversity at the gene cox1 in Antarctic krill. Heredity 104(5): 513-518., more

Dataset status: Completed
Data type: Data
Data origin: Literature research
Metadatarecord created: 2010-03-12
Information last updated: 2010-03-12
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