Postglacial expansion of the Arctic keystone copepod Calanus glacialis

Agata Weydmann , Aleksandra Przyłucka , Marek Lubośny , Katarzyna Walczyńska , Ester A. Serrão , Gareth A. Pearson , Artur Burzyński


Calanus glacialis, a major contributor to zooplankton biomass in the Arctic shelf seas, is a key link between primary production and higher trophic levels that may be sensitive to climate warming. The aim of this study was to explore genetic variation in contemporary populations of this species to infer possible changes during the Quaternary period, and to assess its population structure in both space and time. Calanus glacialis was sampled in the fjords of Spitsbergen (Hornsund and Kongsfjorden) in 2003, 2004, 2006, 2009 and 2012. The sequence of a mitochondrial marker, belonging to the ND5 gene, selected for the study was 1249 base pairs long and distinguished 75 unique haplotypes among 140 individuals that formed three main clades. There was no detectable pattern in the distribution of haplotypes by geographic distance or over time. Interestingly, a Bayesian skyline plot suggested that a 1000-fold increase in population size occurred approximately 10,000 years before present, suggesting a species expansion after the Last Glacial Maximum.
Publication typeIn press (online first, early view)
Author Agata Weydmann ZBPM
Agata Weydmann,,
- Division of Marine Plankton Research
, Aleksandra Przyłucka
Aleksandra Przyłucka,,
, Marek Lubośny
Marek Lubośny,,
, Katarzyna Walczyńska IO
Katarzyna Walczyńska,,
- Institute of Oceanography
, Ester A. Serrão
Ester A. Serrão,,
, Gareth A. Pearson
Gareth A. Pearson,,
, Artur Burzyński
Artur Burzyński,,
Journal seriesMarine Biodiversity, ISSN 1867-1616
Issue year2017
Noonline first
Publication size in sheets0.5
Keywords in EnglishCalanus, zooplankton, mtDNA, population genetics, genetic diversity
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)30
ScoreMinisterial score = 30.0, 19-04-2018, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 19-04-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.646 (2)
Citation count*0
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.