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dc.contributor.authorGhigliotti, Laura
dc.contributor.authorChristiansen, Jørgen Schou
dc.contributor.authorCarlig, Erica
dc.contributor.authorDi Blasi, D
dc.contributor.authorPisano, Eva
dc.date.accessioned2020-12-23T09:34:33Z
dc.date.available2020-12-23T09:34:33Z
dc.date.issued2020-12-18
dc.description.abstractThe ice cod <i>Arctogadus glacialis</i> (Peters, 1872) is one of the few fish species endemic to the Arctic. With a circumpolar distribution, the species is confined to the fjords and shelves of the Arctic seas. Biological information on <i>A. glacialis</i> is scarce, with genomic information restricted to microsatellites. Within the frame of the TUNU-Programme: Arctic Ocean Fishes—Diversity, Adaptation and Conservation, we studied <i>A. glacialis</i> at the chromosomal level to explore fish diversity and evolutionary aspects. The analysis of over 50 individuals from the Northeast Greenland fjords between latitudes 71°09′ N and 76°42′ N revealed a remarkable intraspecific diversity epitomized by chromosome numbers spanning from 28 to 33, the occurrence of putative B chromosomes, and diversified patterns of distribution of heterochromatin and rDNAs. The number of B chromosomes followed a latitudinal gradient from 0–2 in the north to 2–5 in the south. Considering the benthic and rather stationary life history of this species, the observed chromosomal differences might have arisen independently, possibly driven and/or fostered by the dynamics of repetitive sequences, and are being fixed in relatively isolated fjord populations. The resulting latitudinal cline we observe today might have repercussions on the fate of local populations facing the ongoing climate-driven environmental changes.
dc.identifier.citationGhigliotti L, Christiansen js, Carlig E, Di Blasi D, Pisano E. Latitudinal Cline in Chromosome Numbers of Ice Cod A. glacialis (Gadidae) from Northeast Greenland. Genes. 2020;11(12)
dc.identifier.cristinIDFRIDAID 1861991
dc.identifier.doi10.3390/genes11121515
dc.identifier.issn2073-4425
dc.identifier.urihttps://hdl.handle.net/10037/20124
dc.language.isoeng
dc.publisherMDPI
dc.relation.journalGenes
dc.rights.holderCopyright 2020 The Author(s)
dc.titleLatitudinal Cline in Chromosome Numbers of Ice Cod A. glacialis (Gadidae) from Northeast Greenland
dc.typeJournal article
dc.typeTidsskriftartikkel


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