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Molecular phylogenetics of deep-sea amphipods (Eurythenes) reveal a new undescribed species at the Porcupine Abyssal Plain, North East Atlantic Ocean

Molecular phylogenetics of deep-sea amphipods (Eurythenes) reveal a new undescribed species at the Porcupine Abyssal Plain, North East Atlantic Ocean
Molecular phylogenetics of deep-sea amphipods (Eurythenes) reveal a new undescribed species at the Porcupine Abyssal Plain, North East Atlantic Ocean
The genus Eurythenes S. I. Smith in Scudder, 1882, has been the focus of integrated molecular and morphological taxonomy studies in recent years, resulting in the number of species in the genus increasing from three to eight. Samples of Eurythenes spp. collected using free-fall baited traps from the Porcupine Abyssal Plain (PAP), North East Atlantic Ocean, at 4850 m were examined in this study to investigate the identity of the species found using molecular barcoding methods. Mitochondrial COI analysis confirms the presence of E. maldoror at PAP and data from the nuclear 28S rDNA gene provides independent confirmation of this observation. A new, undescribed species that is clearly divergent from all other known species and molecular lineages was identified, which can be distinguished morphologically from known species. A specimen within the E. magellanicus lineage was also found at the site. We discuss the presence of these three Eurythenes species at the Porcupine Abyssal Plain.
Abyssal plains, Amphipoda, Eurythenes, North Atlantic, Porcupine Abyssal Plain, Scavengers
0079-6611
Horton, Tammy
c4b41665-f0bc-4f0f-a7af-b2b9afc02e34
Cooper, Harry
5f9903c4-5b27-4955-9573-7e01064ca8fc
Vlierboom, Rianna
18c00cf6-ce70-4460-a0cf-913ccb557874
Thurston, Michael
af9d2197-a9fa-4ca9-a3ee-15a4cf64798e
Hauton, Chris
7706f6ba-4497-42b2-8c6d-00df81676331
Young, C. Robert
c15e536a-84a3-4e28-a8b1-ccea9a37b3cb
Horton, Tammy
c4b41665-f0bc-4f0f-a7af-b2b9afc02e34
Cooper, Harry
5f9903c4-5b27-4955-9573-7e01064ca8fc
Vlierboom, Rianna
18c00cf6-ce70-4460-a0cf-913ccb557874
Thurston, Michael
af9d2197-a9fa-4ca9-a3ee-15a4cf64798e
Hauton, Chris
7706f6ba-4497-42b2-8c6d-00df81676331
Young, C. Robert
c15e536a-84a3-4e28-a8b1-ccea9a37b3cb

Horton, Tammy, Cooper, Harry, Vlierboom, Rianna, Thurston, Michael, Hauton, Chris and Young, C. Robert (2020) Molecular phylogenetics of deep-sea amphipods (Eurythenes) reveal a new undescribed species at the Porcupine Abyssal Plain, North East Atlantic Ocean. Progress in Oceanography, 183, [102292]. (doi:10.1016/j.pocean.2020.102292).

Record type: Article

Abstract

The genus Eurythenes S. I. Smith in Scudder, 1882, has been the focus of integrated molecular and morphological taxonomy studies in recent years, resulting in the number of species in the genus increasing from three to eight. Samples of Eurythenes spp. collected using free-fall baited traps from the Porcupine Abyssal Plain (PAP), North East Atlantic Ocean, at 4850 m were examined in this study to investigate the identity of the species found using molecular barcoding methods. Mitochondrial COI analysis confirms the presence of E. maldoror at PAP and data from the nuclear 28S rDNA gene provides independent confirmation of this observation. A new, undescribed species that is clearly divergent from all other known species and molecular lineages was identified, which can be distinguished morphologically from known species. A specimen within the E. magellanicus lineage was also found at the site. We discuss the presence of these three Eurythenes species at the Porcupine Abyssal Plain.

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Accepted/In Press date: 4 February 2020
e-pub ahead of print date: 7 February 2020
Published date: 1 April 2020
Keywords: Abyssal plains, Amphipoda, Eurythenes, North Atlantic, Porcupine Abyssal Plain, Scavengers

Identifiers

Local EPrints ID: 439724
URI: http://eprints.soton.ac.uk/id/eprint/439724
ISSN: 0079-6611
PURE UUID: 2e33d9a1-1c56-4786-a070-e62a5ac07d9d
ORCID for Chris Hauton: ORCID iD orcid.org/0000-0002-2313-4226

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Date deposited: 30 Apr 2020 16:34
Last modified: 26 Nov 2021 02:38

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Contributors

Author: Tammy Horton
Author: Harry Cooper
Author: Rianna Vlierboom
Author: Michael Thurston
Author: Chris Hauton ORCID iD
Author: C. Robert Young

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