Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Phylogeography of the Brittle Star Ophiura sarsii Lütken, 1855 (Echinodermata: Ophiuroidea) from the Barents Sea and East Atlantic

Evgeny Genelt-Yanovskiy
* ORCID logo ,
Yixuan Li
,
Ekaterina Stratanenko
,
Natalia Zhuravleva
,
Natalia Strelkova
,
Qinzeng Xu
,
Sophia Nazarova
* ORCID logo
Version 1 : Received: 24 December 2020 / Approved: 25 December 2020 / Online: 25 December 2020 (10:24:23 CET)

How to cite: Genelt-Yanovskiy, E.; Li, Y.; Stratanenko, E.; Zhuravleva, N.; Strelkova, N.; Xu, Q.; Nazarova, S. Phylogeography of the Brittle Star Ophiura sarsii Lütken, 1855 (Echinodermata: Ophiuroidea) from the Barents Sea and East Atlantic. Preprints 2020, 2020120649. https://doi.org/10.20944/preprints202012.0649.v1 Genelt-Yanovskiy, E.; Li, Y.; Stratanenko, E.; Zhuravleva, N.; Strelkova, N.; Xu, Q.; Nazarova, S. Phylogeography of the Brittle Star Ophiura sarsii Lütken, 1855 (Echinodermata: Ophiuroidea) from the Barents Sea and East Atlantic. Preprints 2020, 2020120649. https://doi.org/10.20944/preprints202012.0649.v1

Abstract

Ophiura sarsii is a common brittle star species across Arctic and subarctic regions of Atlantic and Pacific oceans. In the Barents Sea O. sarsii is among the dominant echinoderms. We studied genetic diversity of O. sarsii by sequencing the 548 bp fragment of mitochondrial COI gene. O.sarsii demonstrated high genetic diversity in the Barents Sea. Both major Atlantic mtDNA lineages were present in the Barents Sea and were evenly distributed between the northern waters around Svalbard archipelago and the southern part near Murmansk coast of Kola Peninsula. Both regions, as well as other parts of the O.sarsii range, were characterized by high haplotype diversity with a significant number of private haplotypes, being mostly satellites to the two dominant haplotypes, each belonging to a different mtDNA clade. Demographic analyses indicated that the demographic and spatial expansion of Ophiura sarsii in the Barents Sea most plausibly has started during the Bølling–Allerød interstadial, during the deglaciation of the western margin of the Barents Sea.

Keywords

Ophiura sarsii; the Barents Sea; brittle stars; barcoding; COI gene

Subject

Biology and Life Sciences, Anatomy and Physiology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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