The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species
Abstract Two new species of ryocalanoid copepods (Crustacea: Calanoida), Ryocalanus squamatus sp. nov. and Yrocalanus kurilensis sp. nov. are described together with a female of Ryocalanus infelix Tanaka, 1956, type species for the genus Ryocalanus Tanaka, 1956, from abyssal depths in the Kurile-Kam...
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Online Access: | http://dx.doi.org/10.1093/zoolinnean/zly069 http://academic.oup.com/zoolinnean/article-pdf/185/4/925/28228980/zly069.pdf |
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croxfordunivpr:10.1093/zoolinnean/zly069 2024-04-28T08:26:59+00:00 The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species Renz, Jasmin Markhaseva, Elena L Laakmann, Silke 2018 http://dx.doi.org/10.1093/zoolinnean/zly069 http://academic.oup.com/zoolinnean/article-pdf/185/4/925/28228980/zly069.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Zoological Journal of the Linnean Society volume 185, issue 4, page 925-957 ISSN 0024-4082 1096-3642 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2018 croxfordunivpr https://doi.org/10.1093/zoolinnean/zly069 2024-04-09T07:56:10Z Abstract Two new species of ryocalanoid copepods (Crustacea: Calanoida), Ryocalanus squamatus sp. nov. and Yrocalanus kurilensis sp. nov. are described together with a female of Ryocalanus infelix Tanaka, 1956, type species for the genus Ryocalanus Tanaka, 1956, from abyssal depths in the Kurile-Kamchatka trench. The new species can be assigned to the superfamily Ryocalanoidea based on the segmentation and armature of the swimming legs and the modification of the male right antennule. A new interpretation of the fusions of segments in the male right antennule of Ryocalanus shows the marked differences between the ryocalanoidean genera. The status of Ryocalanoidea within the Calanoida is discussed based on morphology and a first molecular multi-gene analysis with cytochrome oxidase subunit I, cytochrome b, nuclear ribosomal 18S and 28S rDNA and internal transcribed spacer 2. This analysis supports the close interrelationship between Ryocalanoidea and Spinocalanoidea. The monophyletic status of Ryocalanoidea could not be retrieved in the phylogenetic analysis, as specimens of Yrocalanus formed a clade within Spinocalanoidea. The inconclusive results between morphological and molecular analyses are discussed with a proposition to keep the current system until more males of taxa belonging to the Spinocalanoidea are discovered, as the male antennule plays a crucial role in the interpretation of relationships between Ryocalanoidea and Spinocalanoidea. Article in Journal/Newspaper Kamchatka Copepods Oxford University Press Zoological Journal of the Linnean Society 185 4 925 957 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Renz, Jasmin Markhaseva, Elena L Laakmann, Silke The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Two new species of ryocalanoid copepods (Crustacea: Calanoida), Ryocalanus squamatus sp. nov. and Yrocalanus kurilensis sp. nov. are described together with a female of Ryocalanus infelix Tanaka, 1956, type species for the genus Ryocalanus Tanaka, 1956, from abyssal depths in the Kurile-Kamchatka trench. The new species can be assigned to the superfamily Ryocalanoidea based on the segmentation and armature of the swimming legs and the modification of the male right antennule. A new interpretation of the fusions of segments in the male right antennule of Ryocalanus shows the marked differences between the ryocalanoidean genera. The status of Ryocalanoidea within the Calanoida is discussed based on morphology and a first molecular multi-gene analysis with cytochrome oxidase subunit I, cytochrome b, nuclear ribosomal 18S and 28S rDNA and internal transcribed spacer 2. This analysis supports the close interrelationship between Ryocalanoidea and Spinocalanoidea. The monophyletic status of Ryocalanoidea could not be retrieved in the phylogenetic analysis, as specimens of Yrocalanus formed a clade within Spinocalanoidea. The inconclusive results between morphological and molecular analyses are discussed with a proposition to keep the current system until more males of taxa belonging to the Spinocalanoidea are discovered, as the male antennule plays a crucial role in the interpretation of relationships between Ryocalanoidea and Spinocalanoidea. |
format |
Article in Journal/Newspaper |
author |
Renz, Jasmin Markhaseva, Elena L Laakmann, Silke |
author_facet |
Renz, Jasmin Markhaseva, Elena L Laakmann, Silke |
author_sort |
Renz, Jasmin |
title |
The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
title_short |
The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
title_full |
The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
title_fullStr |
The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
title_full_unstemmed |
The phylogeny of Ryocalanoidea (Copepoda, Calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
title_sort |
phylogeny of ryocalanoidea (copepoda, calanoida) based on morphology and a multi-gene analysis with a description of new ryocalanoidean species |
publisher |
Oxford University Press (OUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1093/zoolinnean/zly069 http://academic.oup.com/zoolinnean/article-pdf/185/4/925/28228980/zly069.pdf |
genre |
Kamchatka Copepods |
genre_facet |
Kamchatka Copepods |
op_source |
Zoological Journal of the Linnean Society volume 185, issue 4, page 925-957 ISSN 0024-4082 1096-3642 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/zoolinnean/zly069 |
container_title |
Zoological Journal of the Linnean Society |
container_volume |
185 |
container_issue |
4 |
container_start_page |
925 |
op_container_end_page |
957 |
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1797586123097112576 |