A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean

This is an Accepted Manuscript of an article published by Taylor & Francis in Marine Biology Research on May 16th 2017, available online: http://www.tandfonline.com/10.1080/17451000.2016.1272699 Bivalves have been found in unique benthic assemblages associated with active methane seeps and mound...

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Published in:Marine Biology Research
Main Authors: Åström, Emmelie, Oliver, Graham, Carroll, Michael Leslie
Format: Article in Journal/Newspaper
Language:English
Published: Taylor & Francis 2017
Subjects:
Online Access:https://hdl.handle.net/10037/12794
https://doi.org/10.1080/17451000.2016.1272699
id ftunivtroemsoe:oai:munin.uit.no:10037/12794
record_format openpolar
spelling ftunivtroemsoe:oai:munin.uit.no:10037/12794 2023-05-15T14:23:03+02:00 A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean Åström, Emmelie Oliver, Graham Carroll, Michael Leslie 2017-05-16 https://hdl.handle.net/10037/12794 https://doi.org/10.1080/17451000.2016.1272699 eng eng Taylor & Francis Marine Biology Research info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Åström, E.K.L., Oliver, P.G. & Carroll, M.L. (2017). A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean. Marine Biology Research, 13(4), 402-416. FRIDAID 1470902 doi:10.1080/17451000.2016.1272699 1745-1000 1745-1019 https://hdl.handle.net/10037/12794 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Arctic chemosymbiosis cold seep new species Thyasiridae Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.1080/17451000.2016.1272699 2021-06-25T17:55:43Z This is an Accepted Manuscript of an article published by Taylor & Francis in Marine Biology Research on May 16th 2017, available online: http://www.tandfonline.com/10.1080/17451000.2016.1272699 Bivalves have been found in unique benthic assemblages associated with active methane seeps and mounds along the western and southern margins of the Svalbard shelf (75–79°N) at 350–380 m depth. Among the samples collected were a number of shells of Thyasiridae that are distinct from any species previously described. Here we describe one new genus Rhacothyas gen. nov. and two new species Thyasira capitanea sp. nov. and Rhacothyas kolgae sp. nov., including their distinguishing characteristics and the environmental setting where they were found. Thyasira capitanea sp. nov. is large compared with many other thyasirids, has an equilateral shell and demarcated zones on the median and anterior areas along with a distinct posterior sulcus. Rhacothyas kolgae sp. nov. is unique among other thyasirid genera and species regarding its characteristic outline, sunken lunule, lack of submarginal sulcus and wrinkled surface. Furthermore, we discuss their present occurrence in the context of the glaciomarine history of the Svalbard margin. We posit that these new species, after the deglaciation of the Barents Sea Ice Sheet, may have originated from other chemosynthetic or reducing environments along the Atlantic shelf margin or the southern Barents Sea shelf by following the net transport of the North Atlantic Current rather than having evolved in situ. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Ice Sheet north atlantic current North Atlantic Sea ice Svalbard Svalbard margin University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Barents Sea Svalbard Marine Biology Research 13 4 402 416
institution Open Polar
collection University of Tromsø: Munin Open Research Archive
op_collection_id ftunivtroemsoe
language English
topic VDP::Matematikk og Naturvitenskap: 400::Geofag: 450
VDP::Mathematics and natural science: 400::Geosciences: 450
Arctic
chemosymbiosis
cold seep
new species
Thyasiridae
spellingShingle VDP::Matematikk og Naturvitenskap: 400::Geofag: 450
VDP::Mathematics and natural science: 400::Geosciences: 450
Arctic
chemosymbiosis
cold seep
new species
Thyasiridae
Åström, Emmelie
Oliver, Graham
Carroll, Michael Leslie
A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean
topic_facet VDP::Matematikk og Naturvitenskap: 400::Geofag: 450
VDP::Mathematics and natural science: 400::Geosciences: 450
Arctic
chemosymbiosis
cold seep
new species
Thyasiridae
description This is an Accepted Manuscript of an article published by Taylor & Francis in Marine Biology Research on May 16th 2017, available online: http://www.tandfonline.com/10.1080/17451000.2016.1272699 Bivalves have been found in unique benthic assemblages associated with active methane seeps and mounds along the western and southern margins of the Svalbard shelf (75–79°N) at 350–380 m depth. Among the samples collected were a number of shells of Thyasiridae that are distinct from any species previously described. Here we describe one new genus Rhacothyas gen. nov. and two new species Thyasira capitanea sp. nov. and Rhacothyas kolgae sp. nov., including their distinguishing characteristics and the environmental setting where they were found. Thyasira capitanea sp. nov. is large compared with many other thyasirids, has an equilateral shell and demarcated zones on the median and anterior areas along with a distinct posterior sulcus. Rhacothyas kolgae sp. nov. is unique among other thyasirid genera and species regarding its characteristic outline, sunken lunule, lack of submarginal sulcus and wrinkled surface. Furthermore, we discuss their present occurrence in the context of the glaciomarine history of the Svalbard margin. We posit that these new species, after the deglaciation of the Barents Sea Ice Sheet, may have originated from other chemosynthetic or reducing environments along the Atlantic shelf margin or the southern Barents Sea shelf by following the net transport of the North Atlantic Current rather than having evolved in situ.
format Article in Journal/Newspaper
author Åström, Emmelie
Oliver, Graham
Carroll, Michael Leslie
author_facet Åström, Emmelie
Oliver, Graham
Carroll, Michael Leslie
author_sort Åström, Emmelie
title A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean
title_short A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean
title_full A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean
title_fullStr A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean
title_full_unstemmed A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean
title_sort new genus and two new species of thyasiridae associated with methane seeps off svalbard, arctic ocean
publisher Taylor & Francis
publishDate 2017
url https://hdl.handle.net/10037/12794
https://doi.org/10.1080/17451000.2016.1272699
geographic Arctic
Arctic Ocean
Barents Sea
Svalbard
geographic_facet Arctic
Arctic Ocean
Barents Sea
Svalbard
genre Arctic
Arctic
Arctic Ocean
Barents Sea
Ice Sheet
north atlantic current
North Atlantic
Sea ice
Svalbard
Svalbard margin
genre_facet Arctic
Arctic
Arctic Ocean
Barents Sea
Ice Sheet
north atlantic current
North Atlantic
Sea ice
Svalbard
Svalbard margin
op_relation Marine Biology Research
info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/
Åström, E.K.L., Oliver, P.G. & Carroll, M.L. (2017). A new genus and two new species of Thyasiridae associated with methane seeps off Svalbard, Arctic Ocean. Marine Biology Research, 13(4), 402-416.
FRIDAID 1470902
doi:10.1080/17451000.2016.1272699
1745-1000
1745-1019
https://hdl.handle.net/10037/12794
op_rights openAccess
op_doi https://doi.org/10.1080/17451000.2016.1272699
container_title Marine Biology Research
container_volume 13
container_issue 4
container_start_page 402
op_container_end_page 416
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