DNA barcoding of monothalamid foraminifera from Vestnesa and Svyatogor Ridge, Arctic Ocean, including the description of 3 new species

Holzmann, Maria ORCID: https://orcid.org/0000-0003-2460-6210; Holm, Villads D. ORCID: https://orcid.org/0009-0001-2735-0487; Angeles, Ines Barrenechea ORCID: https://orcid.org/0000-0002-8051-4110; Gooday, Andrew J. ORCID: https://orcid.org/0000-0002-5661-7371; Pawlowski, Jan ORCID: https://orcid.org/0000-0003-2421-388X; Panieri, Giuliana ORCID: https://orcid.org/0000-0001-9411-1729. 2024 DNA barcoding of monothalamid foraminifera from Vestnesa and Svyatogor Ridge, Arctic Ocean, including the description of 3 new species. Polar Biology, 48 (1). 10.1007/s00300-024-03320-2

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Abstract/Summary

Monothalamid (single-chambered) foraminifera are a common constituent of high latitudinal coastal and deep-sea biota but are under-researched, and a limited number of species are described. Here, we present the first DNA barcoding study of monothalamid foraminifera collected from methane seeps along the Vestnesa and Svyatogor Ridge off NW Svalbard. Samples were taken from active pockmarks focusing on typical seep microhabitats characterized by microbial mats, and tubeworms. Additionally, reference samples were obtained from adjacent zones outside the pockmarks. We report here DNA barcode sequences of the 18S rRNA gene for seven monothalamid species of which three are described based on molecular and morphological data, the other four remain undescribed or undetermined. Conqueria bolivari sp. nov. has an elongate tubular shape and finely agglutinated test with a silvery, glossy surface. It branches with Conqueria laevis from the deep Weddell Sea and an undescribed Conqueria sp. from the Greenland Sea. Hilla arctica sp. nov. is elongated to broadly pyriform with a white, finely agglutinated test. It branches as a sister to Hilla argentea from South Georgia in the monothalamid Clade Y. Senguptiella vestnesensis gen. nov. sp. nov. branches in the monothalamid Clade C. It is rounded, with a finely agglutinated, reflective test wall. We also obtained DNA barcode sequences for undescribed Hippocrepinella sp. (Clade D) and Bathysiphon sp. (Clade BM) and two undetermined monothalamids (Clade Y and Clade Storthosphaera). Our study contributes to the efforts of obtaining DNA barcoding data for Arctic marine biodiversity and shows that monothalamid foraminifera are an important component of polar benthic communities.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1007/s00300-024-03320-2
ISSN:	0722-4060
Additional Keywords:	Arctic, methane seeps, DNA barcoding, integrative taxonomy
Related URLs:	Other
Date made live:	16 Jan 2025 13:11 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/538749

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