Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution
The large-scale dispersal of deep-sea harpacticoid copepods is an increasing focus for ecological studies. A fundamental prerequisite for monitoring and explaining their geographical distribution is precise descriptions of their morphology. Four new, closely related species of the family Paramesochr...
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Language: | English |
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Online Access: | https://www.vliz.be/imisdocs/publications/369369.pdf |
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ftvliz:oai:oma.vliz.be:347474 2023-05-15T18:25:45+02:00 Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution Mathiske, A. Thistle, D. Gheerardyn, H. Veit-Köhler, G. 2021 application/pdf https://www.vliz.be/imisdocs/publications/369369.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000709729900005 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.11646/zootaxa.5051.1.18 https://www.vliz.be/imisdocs/publications/369369.pdf info:eu-repo/semantics/openAccess %3Ci%3EZootaxa+5051%281%29%3C%2Fi%3E%3A+443-486.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.11646%2Fzootaxa.5051.1.18%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.11646%2Fzootaxa.5051.1.18%3C%2Fa%3E Copepoda [copepods] Crustacea [crustaceans] Kliopsyllus Paramesochridae info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftvliz https://doi.org/10.11646/zootaxa.5051.1.18 2022-05-01T12:13:03Z The large-scale dispersal of deep-sea harpacticoid copepods is an increasing focus for ecological studies. A fundamental prerequisite for monitoring and explaining their geographical distribution is precise descriptions of their morphology. Four new, closely related species of the family Paramesochridae (Copepoda, Harpacticoida) were found in the deep sea of the Pacific (San Diego Trough and off Chile), the Atlantic Ocean (Porcupine Abyssal Plain and Angola Basin), and the Atlantic and Indian Ocean sectors of the Southern Ocean (Weddell Sea and off Crozet Island). The discovery of Emertonia berndi sp. nov. , E. hessleri sp. nov. , E. ilse sp. nov. , and E. serrata sp. nov. increases the number of known deep-sea species in this genus to ten. The new species are placed in Emertonia Wilson, 1932 because of their one-segmented endopods on the second and third swimming legs. The presence of a two-segmented endopod on the fourth swimming leg allocates them to the “ andeep -group” within this genus. The four species can be distinguished from their congeners by the strongly serrated spines on the exopods of their swimming legs and an outwardly directed flexible seta on the exopod of the fifth leg. It is conveivable that these two specific characters evolved only once in the genus Emertonia . Their apparently cosmopolitan distribution covers thousands of kilometres and spans all major oceans. This biogeographical pattern may be explained by resuspension events followed by passive transport by benthic currents. Discrepancies in their dispersal ranges may be a result of changing geological and oceanographic boundaries. Article in Journal/Newspaper Southern Ocean Weddell Sea Copepods Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Southern Ocean Weddell Sea Pacific Indian Weddell Seta ENVELOPE(9.895,9.895,63.645,63.645) Zootaxa 5051 1 443 486 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
topic |
Copepoda [copepods] Crustacea [crustaceans] Kliopsyllus Paramesochridae |
spellingShingle |
Copepoda [copepods] Crustacea [crustaceans] Kliopsyllus Paramesochridae Mathiske, A. Thistle, D. Gheerardyn, H. Veit-Köhler, G. Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution |
topic_facet |
Copepoda [copepods] Crustacea [crustaceans] Kliopsyllus Paramesochridae |
description |
The large-scale dispersal of deep-sea harpacticoid copepods is an increasing focus for ecological studies. A fundamental prerequisite for monitoring and explaining their geographical distribution is precise descriptions of their morphology. Four new, closely related species of the family Paramesochridae (Copepoda, Harpacticoida) were found in the deep sea of the Pacific (San Diego Trough and off Chile), the Atlantic Ocean (Porcupine Abyssal Plain and Angola Basin), and the Atlantic and Indian Ocean sectors of the Southern Ocean (Weddell Sea and off Crozet Island). The discovery of Emertonia berndi sp. nov. , E. hessleri sp. nov. , E. ilse sp. nov. , and E. serrata sp. nov. increases the number of known deep-sea species in this genus to ten. The new species are placed in Emertonia Wilson, 1932 because of their one-segmented endopods on the second and third swimming legs. The presence of a two-segmented endopod on the fourth swimming leg allocates them to the “ andeep -group” within this genus. The four species can be distinguished from their congeners by the strongly serrated spines on the exopods of their swimming legs and an outwardly directed flexible seta on the exopod of the fifth leg. It is conveivable that these two specific characters evolved only once in the genus Emertonia . Their apparently cosmopolitan distribution covers thousands of kilometres and spans all major oceans. This biogeographical pattern may be explained by resuspension events followed by passive transport by benthic currents. Discrepancies in their dispersal ranges may be a result of changing geological and oceanographic boundaries. |
format |
Article in Journal/Newspaper |
author |
Mathiske, A. Thistle, D. Gheerardyn, H. Veit-Köhler, G. |
author_facet |
Mathiske, A. Thistle, D. Gheerardyn, H. Veit-Köhler, G. |
author_sort |
Mathiske, A. |
title |
Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution |
title_short |
Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution |
title_full |
Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution |
title_fullStr |
Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution |
title_full_unstemmed |
Deep sea without limits — four new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution |
title_sort |
deep sea without limits — four new closely related species of emertonia wilson, 1932 (copepoda: harpacticoida: paramesochridae) show characters with a world-wide distribution |
publishDate |
2021 |
url |
https://www.vliz.be/imisdocs/publications/369369.pdf |
long_lat |
ENVELOPE(9.895,9.895,63.645,63.645) |
geographic |
Southern Ocean Weddell Sea Pacific Indian Weddell Seta |
geographic_facet |
Southern Ocean Weddell Sea Pacific Indian Weddell Seta |
genre |
Southern Ocean Weddell Sea Copepods |
genre_facet |
Southern Ocean Weddell Sea Copepods |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000709729900005 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.11646/zootaxa.5051.1.18 https://www.vliz.be/imisdocs/publications/369369.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.11646/zootaxa.5051.1.18 |
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Zootaxa |
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5051 |
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443 |
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486 |
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1766207399414202368 |