Mitochondrial genomes of the key zooplankton copepods Arctic Calanus glacialis and North Atlantic Calanus finmarchicus with the longest crustacean non-coding regions

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

Abstract

We determined the nearly complete mitochondrial genomes of the Arctic Calanus glacialis and its North Atlantic sibling Calanus finmarchicus, which are key zooplankton components in marine ecosystems. The sequenced part of C. glacialis mitogenome is 27,342 bp long and consists of two contigs, while for C. finmarchicus it is 29,462 bp and six contigs, what makes them the longest reported copepod mitogenomes. The typical set of metazoan mitochondrial genes is present in these mitogenomes, although the non-coding regions (NCRs) are unusually long and complex. The mitogenomes of the closest species C. glacialis and C. finmarchicus, followed by the North Pacific C. sinicus, are structurally similar and differ from the much more typical of deep-water, Arctic C. hyperboreus. This evolutionary trend for the expansion of NCRs within the Calanus mitogenomes increases mitochondrial DNA density, what resulted in its similar density to the nuclear genome. Given large differences in the length and structure of C. glacialis and C. finmarchicus mitogenomes, we conclude that the species are genetically distinct and thus cannot hybridize. The molecular resources presented here: the mitogenomic and rDNA sequences, and the database of repetitive elements should facilitate the development of genetic markers suitable in pursuing evolutionary research in copepods.
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,,
-
Other language title versions
Journal seriesScientific Reports, ISSN 2045-2322
Issue year2017
Vol 7
Pages1-11
Publication size in sheets0.5
Keywords in Englishmarine biology, mitochondrial genome
DOIDOI:10.1038/s41598-017-13807-0
URL https://www.nature.com/articles/s41598-017-13807-0.pdf
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)40
ScoreMinisterial score = 40.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.259 (2) - 2016=4.847 (5)
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