Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution
Abstract Frenulate species were identified from a high Arctic methane seep area on Vestnesa Ridge, western Svalbard margin (79°N, Fram Strait) based on mitochondrial cytochrome oxidase subunit I (mtCOI). Two species were found: Oligobrachia haakonmosbiensis, and a new, distinct, and undescribed Olig...
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ftdoajarticles:oai:doaj.org/article:8ff9cfb9b49a4e7fb64e9101b60bd58a 2023-05-15T14:31:46+02:00 Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution Arunima Sen Alena Didriksen Stéphane Hourdez Mette Marianne Svenning Tine L. Rasmussen 2020-02-01T00:00:00Z https://doi.org/10.1002/ece3.5988 https://doaj.org/article/8ff9cfb9b49a4e7fb64e9101b60bd58a EN eng Wiley https://doi.org/10.1002/ece3.5988 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5988 https://doaj.org/article/8ff9cfb9b49a4e7fb64e9101b60bd58a Ecology and Evolution, Vol 10, Iss 3, Pp 1339-1351 (2020) Atlantic currents dispersal Fram Strait gas seepage larvae Oligobrachia Ecology QH540-549.5 article 2020 ftdoajarticles https://doi.org/10.1002/ece3.5988 2022-12-31T10:44:40Z Abstract Frenulate species were identified from a high Arctic methane seep area on Vestnesa Ridge, western Svalbard margin (79°N, Fram Strait) based on mitochondrial cytochrome oxidase subunit I (mtCOI). Two species were found: Oligobrachia haakonmosbiensis, and a new, distinct, and undescribed Oligobrachia species. The new species adds to the cryptic Oligobrachia species complex found at high latitude methane seeps in the north Atlantic and the Arctic. However, this species displays a curled tube morphology and light brown coloration that could serve to distinguish it from other members of the complex. A number of single tentacle individuals were recovered which were initially thought to be members of the only unitentaculate genus, Siboglinum. However, sequencing revealed them to be the new species and the single tentacle morphology, in addition to thin, colorless, and ringless tubes indicate that they are juveniles. This is the first known report of juveniles of northern Oligobrachia. Since the juveniles all appeared to be at about the same developmental stage, it is possible that reproduction is either synchronized within the species, or that despite continuous reproduction, settlement, and growth in the sediment only takes place at specific periods. The new find of the well‐known species O. haakonmosbiensis extends its range from the Norwegian Sea to high latitudes of the Arctic in the Fram Strait. We suggest bottom currents serve as the main distribution mechanism for high latitude Oligobrachia species and that water depth constitutes a major dispersal barrier. This explains the lack of overlap between the distributions of northern Oligobrachia species despite exposure to similar current regimes. Our results point toward a single speciation event within the Oligobrachia clade, and we suggest that this occurred in the late Neogene, when topographical changes occurred and exchanges between Arctic and North Atlantic water masses and subsequent thermohaline circulation intensified. Article in Journal/Newspaper arctic methane Arctic Fram Strait North Atlantic Norwegian Sea Svalbard Svalbard margin Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Norwegian Sea Ecology and Evolution 10 3 1339 1351 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Atlantic currents dispersal Fram Strait gas seepage larvae Oligobrachia Ecology QH540-549.5 |
spellingShingle |
Atlantic currents dispersal Fram Strait gas seepage larvae Oligobrachia Ecology QH540-549.5 Arunima Sen Alena Didriksen Stéphane Hourdez Mette Marianne Svenning Tine L. Rasmussen Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution |
topic_facet |
Atlantic currents dispersal Fram Strait gas seepage larvae Oligobrachia Ecology QH540-549.5 |
description |
Abstract Frenulate species were identified from a high Arctic methane seep area on Vestnesa Ridge, western Svalbard margin (79°N, Fram Strait) based on mitochondrial cytochrome oxidase subunit I (mtCOI). Two species were found: Oligobrachia haakonmosbiensis, and a new, distinct, and undescribed Oligobrachia species. The new species adds to the cryptic Oligobrachia species complex found at high latitude methane seeps in the north Atlantic and the Arctic. However, this species displays a curled tube morphology and light brown coloration that could serve to distinguish it from other members of the complex. A number of single tentacle individuals were recovered which were initially thought to be members of the only unitentaculate genus, Siboglinum. However, sequencing revealed them to be the new species and the single tentacle morphology, in addition to thin, colorless, and ringless tubes indicate that they are juveniles. This is the first known report of juveniles of northern Oligobrachia. Since the juveniles all appeared to be at about the same developmental stage, it is possible that reproduction is either synchronized within the species, or that despite continuous reproduction, settlement, and growth in the sediment only takes place at specific periods. The new find of the well‐known species O. haakonmosbiensis extends its range from the Norwegian Sea to high latitudes of the Arctic in the Fram Strait. We suggest bottom currents serve as the main distribution mechanism for high latitude Oligobrachia species and that water depth constitutes a major dispersal barrier. This explains the lack of overlap between the distributions of northern Oligobrachia species despite exposure to similar current regimes. Our results point toward a single speciation event within the Oligobrachia clade, and we suggest that this occurred in the late Neogene, when topographical changes occurred and exchanges between Arctic and North Atlantic water masses and subsequent thermohaline circulation intensified. |
format |
Article in Journal/Newspaper |
author |
Arunima Sen Alena Didriksen Stéphane Hourdez Mette Marianne Svenning Tine L. Rasmussen |
author_facet |
Arunima Sen Alena Didriksen Stéphane Hourdez Mette Marianne Svenning Tine L. Rasmussen |
author_sort |
Arunima Sen |
title |
Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution |
title_short |
Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution |
title_full |
Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution |
title_fullStr |
Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution |
title_full_unstemmed |
Frenulate siboglinids at high Arctic methane seeps and insight into high latitude frenulate distribution |
title_sort |
frenulate siboglinids at high arctic methane seeps and insight into high latitude frenulate distribution |
publisher |
Wiley |
publishDate |
2020 |
url |
https://doi.org/10.1002/ece3.5988 https://doaj.org/article/8ff9cfb9b49a4e7fb64e9101b60bd58a |
geographic |
Arctic Svalbard Norwegian Sea |
geographic_facet |
Arctic Svalbard Norwegian Sea |
genre |
arctic methane Arctic Fram Strait North Atlantic Norwegian Sea Svalbard Svalbard margin |
genre_facet |
arctic methane Arctic Fram Strait North Atlantic Norwegian Sea Svalbard Svalbard margin |
op_source |
Ecology and Evolution, Vol 10, Iss 3, Pp 1339-1351 (2020) |
op_relation |
https://doi.org/10.1002/ece3.5988 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5988 https://doaj.org/article/8ff9cfb9b49a4e7fb64e9101b60bd58a |
op_doi |
https://doi.org/10.1002/ece3.5988 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
3 |
container_start_page |
1339 |
op_container_end_page |
1351 |
_version_ |
1766305306988511232 |