Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae)
The genus Eurythenes S.I. Smith in Scudder, 1882 was previously considered as consisting of three highly distinctive species: E. gryllus (Lichtenstein in Mandt, 1822), E. thurstoni Stoddart & Lowry, 2004 and E. obesus (Chevreux, 1905). E. gryllus has been considered as a common cosmopolitan and...
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2015
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ftmagnoliapress:oai:ojs.mapress.com:article/34551 2023-05-15T13:43:46+02:00 Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) d’ACOZ, CÉDRIC d’UDEKEM HAVERMANS, CHARLOTTE 2015-06-10 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.3971.1.1 https://doi.org/10.11646/zootaxa.3971.1.1 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.3971.1.1/34681 Copyright (c) 2016 Zootaxa Zootaxa; Vol 3971, No 1: 10 Jun. 2015; 1–80 1175-5334 1175-5326 10.11646/zootaxa.3971.1 Amphipoda Lysianassoidea Eurythenes Southern Ocean Arctic Ocean Atlantic bipolar species bathyal abyssal reverse taxonomy pseudocryptic species new species Crustacea info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftmagnoliapress https://doi.org/10.11646/zootaxa.3971.1.1 2019-10-08T15:04:32Z The genus Eurythenes S.I. Smith in Scudder, 1882 was previously considered as consisting of three highly distinctive species: E. gryllus (Lichtenstein in Mandt, 1822), E. thurstoni Stoddart & Lowry, 2004 and E. obesus (Chevreux, 1905). E. gryllus has been considered as a common cosmopolitan and eurybathic species recorded down to a depth of 7800 m. However, the analysis of DNA sequences (COI, 16S, 28S) of newly collected specimens combined with GenBank sequences revealed the existence of nine genetic lineages within E. gryllus sensu lato. Specimens were recovered by tree-construction methods in distinct, well-supported clades and were separated by genetic divergences in the same range as interspecific values documented for other lysianassoid species. Furthermore, in some cases, different lineages were found at the same sampling locality. Specimens of six of the nine clades were examined directly. With one exception, these clades are separated by small but consistent morphological differences. As a consequence, five morphospecies are recognized herein within the E. gryllus complex: E. andhakarae sp. nov. (West Antarctica, abyssal), E. gryllus (bipolar, bathyal), E. magellanicus H. Milne Edwards, 1848 (Cape Horn and Brazil Basin, abyssal), E. maldoror sp. nov. (nearly cosmopolitan, abyssal), E. sigmiferus sp. nov. (at least West Atlantic, possibly nearly cosmopolitan, abyssal). Article in Journal/Newspaper Antarc* Antarctica Arctic Arctic Ocean Southern Ocean West Antarctica Magnolia press Arctic Southern Ocean Arctic Ocean West Antarctica Lowry ENVELOPE(-64.150,-64.150,-84.550,-84.550) Chevreux ENVELOPE(-64.867,-64.867,-65.667,-65.667) Cape Horn ENVELOPE(-135.021,-135.021,61.583,61.583) Zootaxa 3971 1 1 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Amphipoda Lysianassoidea Eurythenes Southern Ocean Arctic Ocean Atlantic bipolar species bathyal abyssal reverse taxonomy pseudocryptic species new species Crustacea |
spellingShingle |
Amphipoda Lysianassoidea Eurythenes Southern Ocean Arctic Ocean Atlantic bipolar species bathyal abyssal reverse taxonomy pseudocryptic species new species Crustacea d’ACOZ, CÉDRIC d’UDEKEM HAVERMANS, CHARLOTTE Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) |
topic_facet |
Amphipoda Lysianassoidea Eurythenes Southern Ocean Arctic Ocean Atlantic bipolar species bathyal abyssal reverse taxonomy pseudocryptic species new species Crustacea |
description |
The genus Eurythenes S.I. Smith in Scudder, 1882 was previously considered as consisting of three highly distinctive species: E. gryllus (Lichtenstein in Mandt, 1822), E. thurstoni Stoddart & Lowry, 2004 and E. obesus (Chevreux, 1905). E. gryllus has been considered as a common cosmopolitan and eurybathic species recorded down to a depth of 7800 m. However, the analysis of DNA sequences (COI, 16S, 28S) of newly collected specimens combined with GenBank sequences revealed the existence of nine genetic lineages within E. gryllus sensu lato. Specimens were recovered by tree-construction methods in distinct, well-supported clades and were separated by genetic divergences in the same range as interspecific values documented for other lysianassoid species. Furthermore, in some cases, different lineages were found at the same sampling locality. Specimens of six of the nine clades were examined directly. With one exception, these clades are separated by small but consistent morphological differences. As a consequence, five morphospecies are recognized herein within the E. gryllus complex: E. andhakarae sp. nov. (West Antarctica, abyssal), E. gryllus (bipolar, bathyal), E. magellanicus H. Milne Edwards, 1848 (Cape Horn and Brazil Basin, abyssal), E. maldoror sp. nov. (nearly cosmopolitan, abyssal), E. sigmiferus sp. nov. (at least West Atlantic, possibly nearly cosmopolitan, abyssal). |
format |
Article in Journal/Newspaper |
author |
d’ACOZ, CÉDRIC d’UDEKEM HAVERMANS, CHARLOTTE |
author_facet |
d’ACOZ, CÉDRIC d’UDEKEM HAVERMANS, CHARLOTTE |
author_sort |
d’ACOZ, CÉDRIC d’UDEKEM |
title |
Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) |
title_short |
Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) |
title_full |
Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) |
title_fullStr |
Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) |
title_full_unstemmed |
Contribution to the systematics of the genus Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda: Lysianassoidea: Eurytheneidae) |
title_sort |
contribution to the systematics of the genus eurythenes s.i. smith in scudder, 1882 (crustacea: amphipoda: lysianassoidea: eurytheneidae) |
publisher |
Mangolia Press |
publishDate |
2015 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.3971.1.1 https://doi.org/10.11646/zootaxa.3971.1.1 |
long_lat |
ENVELOPE(-64.150,-64.150,-84.550,-84.550) ENVELOPE(-64.867,-64.867,-65.667,-65.667) ENVELOPE(-135.021,-135.021,61.583,61.583) |
geographic |
Arctic Southern Ocean Arctic Ocean West Antarctica Lowry Chevreux Cape Horn |
geographic_facet |
Arctic Southern Ocean Arctic Ocean West Antarctica Lowry Chevreux Cape Horn |
genre |
Antarc* Antarctica Arctic Arctic Ocean Southern Ocean West Antarctica |
genre_facet |
Antarc* Antarctica Arctic Arctic Ocean Southern Ocean West Antarctica |
op_source |
Zootaxa; Vol 3971, No 1: 10 Jun. 2015; 1–80 1175-5334 1175-5326 10.11646/zootaxa.3971.1 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.3971.1.1/34681 |
op_rights |
Copyright (c) 2016 Zootaxa |
op_doi |
https://doi.org/10.11646/zootaxa.3971.1.1 |
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Zootaxa |
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3971 |
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1 |
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1766192877477560320 |