Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae
Abstract Keysercythere reticulata sp. nov. and Redekea abyssalis sp. nov., collected from the wood fall submerged in the Kuril-Kamchatka Trench (Northwestern Pacific), are only the second records of the naturally occurring, wood-associated ostracod fauna from a depth of over 5000 m. At the same time...
Published in: | Arthropod Systematics & Phylogeny |
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Format: | Article in Journal/Newspaper |
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Senckenberg Gesellschaft für Naturforschung
2021
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Online Access: | https://zenodo.org/record/4971236 https://doi.org/10.3897/asp.79.e62282 |
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ftzenodo:oai:zenodo.org:4971236 2023-05-15T16:59:01+02:00 Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae Tanaka, Hayato Yoo, Hyunsu Pham, Huyen Thi Minh Karanovic, Ivana 2021-06-09 https://zenodo.org/record/4971236 https://doi.org/10.3897/asp.79.e62282 unknown Senckenberg Gesellschaft für Naturforschung doi:10.3897/asp.79.e62282.figure1 doi:10.3897/asp.79.e62282.figure10 doi:10.3897/asp.79.e62282.figure4 doi:10.3897/asp.79.e62282.figure9 doi:10.3897/asp.79.e62282.figure8 doi:10.3897/asp.79.e62282.figure2 doi:10.3897/asp.79.e62282.figure7 doi:10.3897/asp.79.e62282.figure6 doi:10.3897/asp.79.e62282.figure3 doi:10.3897/asp.79.e62282.figure5 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4971236 https://doi.org/10.3897/asp.79.e62282 oai:zenodo.org:4971236 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Arthropod Systematics & Phylogeny 79 171-188 Animalia Arthropoda Ostracoda Podocopida Cytheroidea Keysercytheridae Limnocytheridae Paradoxostomatidae deep sea molecular phylogeny symbiosis wood-fall fauna 18S rRNA gene info:eu-repo/semantics/article publication-article 2021 ftzenodo https://doi.org/10.3897/asp.79.e6228210.3897/asp.79.e62282.figure110.3897/asp.79.e62282.figure1010.3897/asp.79.e62282.figure410.3897/asp.79.e62282.figure910.3897/asp.79.e62282.figure810.3897/asp.79.e62282.figure210.3897/asp.79.e62282.figure710.3897/asp.79 2023-03-10T23:07:53Z Abstract Keysercythere reticulata sp. nov. and Redekea abyssalis sp. nov., collected from the wood fall submerged in the Kuril-Kamchatka Trench (Northwestern Pacific), are only the second records of the naturally occurring, wood-associated ostracod fauna from a depth of over 5000 m. At the same time, K. reticulata is the second and R. abyssalis is the third representative of their respective genera. While Keysercythere Karanovic and Brandão, 2015 species are free-living, deep-sea taxa, all Redekea de Vos, 1953 live symbiotically on the body surface of wood-boring isopods, Limnoria spp. Since R. abyssalis is the only genus representative found in the deep sea, we hypothesize that its ancestor colonized this ecosystem as a result of the symbiotic relationship. Newly collected material enabled us to update molecular phylogeny of Cythreoidea based on 18S rRNA gene sequences, especially to clarify the current systematics of the families Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. The resulting phylogenetic tree supports a close relationship between Keysercythere and Redekea and a distant relationship between two Limnocytheridae lineages, Timiriaseviinae and Limnocytherinae. Consequently, we propose a transfer of Redekea from Paradoxostomatidae to Keysercytheridae, and erecting of the two limnocytherid subfamilies onto the family level. The phylogenetic analysis also implies a close relationship between the nominal Limnocytherinae genus and Keysercythere+Redekea clade, albeit with a low posterior probability, requiring further studies to clarify this. Article in Journal/Newspaper Kamchatka Zenodo Pacific Arthropod Systematics & Phylogeny 79 171 188 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Animalia Arthropoda Ostracoda Podocopida Cytheroidea Keysercytheridae Limnocytheridae Paradoxostomatidae deep sea molecular phylogeny symbiosis wood-fall fauna 18S rRNA gene |
spellingShingle |
Animalia Arthropoda Ostracoda Podocopida Cytheroidea Keysercytheridae Limnocytheridae Paradoxostomatidae deep sea molecular phylogeny symbiosis wood-fall fauna 18S rRNA gene Tanaka, Hayato Yoo, Hyunsu Pham, Huyen Thi Minh Karanovic, Ivana Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae |
topic_facet |
Animalia Arthropoda Ostracoda Podocopida Cytheroidea Keysercytheridae Limnocytheridae Paradoxostomatidae deep sea molecular phylogeny symbiosis wood-fall fauna 18S rRNA gene |
description |
Abstract Keysercythere reticulata sp. nov. and Redekea abyssalis sp. nov., collected from the wood fall submerged in the Kuril-Kamchatka Trench (Northwestern Pacific), are only the second records of the naturally occurring, wood-associated ostracod fauna from a depth of over 5000 m. At the same time, K. reticulata is the second and R. abyssalis is the third representative of their respective genera. While Keysercythere Karanovic and Brandão, 2015 species are free-living, deep-sea taxa, all Redekea de Vos, 1953 live symbiotically on the body surface of wood-boring isopods, Limnoria spp. Since R. abyssalis is the only genus representative found in the deep sea, we hypothesize that its ancestor colonized this ecosystem as a result of the symbiotic relationship. Newly collected material enabled us to update molecular phylogeny of Cythreoidea based on 18S rRNA gene sequences, especially to clarify the current systematics of the families Keysercytheridae, Limnocytheridae, and Paradoxostomatidae. The resulting phylogenetic tree supports a close relationship between Keysercythere and Redekea and a distant relationship between two Limnocytheridae lineages, Timiriaseviinae and Limnocytherinae. Consequently, we propose a transfer of Redekea from Paradoxostomatidae to Keysercytheridae, and erecting of the two limnocytherid subfamilies onto the family level. The phylogenetic analysis also implies a close relationship between the nominal Limnocytherinae genus and Keysercythere+Redekea clade, albeit with a low posterior probability, requiring further studies to clarify this. |
format |
Article in Journal/Newspaper |
author |
Tanaka, Hayato Yoo, Hyunsu Pham, Huyen Thi Minh Karanovic, Ivana |
author_facet |
Tanaka, Hayato Yoo, Hyunsu Pham, Huyen Thi Minh Karanovic, Ivana |
author_sort |
Tanaka, Hayato |
title |
Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae |
title_short |
Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae |
title_full |
Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae |
title_fullStr |
Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae |
title_full_unstemmed |
Two new xylophile cytheroid ostracods (Crustacea) from Kuril-Kamchatka Trench, with remarks on the systematics and phylogeny of the family Keysercytheridae, Limnocytheridae, and Paradoxostomatidae |
title_sort |
two new xylophile cytheroid ostracods (crustacea) from kuril-kamchatka trench, with remarks on the systematics and phylogeny of the family keysercytheridae, limnocytheridae, and paradoxostomatidae |
publisher |
Senckenberg Gesellschaft für Naturforschung |
publishDate |
2021 |
url |
https://zenodo.org/record/4971236 https://doi.org/10.3897/asp.79.e62282 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Arthropod Systematics & Phylogeny 79 171-188 |
op_relation |
doi:10.3897/asp.79.e62282.figure1 doi:10.3897/asp.79.e62282.figure10 doi:10.3897/asp.79.e62282.figure4 doi:10.3897/asp.79.e62282.figure9 doi:10.3897/asp.79.e62282.figure8 doi:10.3897/asp.79.e62282.figure2 doi:10.3897/asp.79.e62282.figure7 doi:10.3897/asp.79.e62282.figure6 doi:10.3897/asp.79.e62282.figure3 doi:10.3897/asp.79.e62282.figure5 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4971236 https://doi.org/10.3897/asp.79.e62282 oai:zenodo.org:4971236 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3897/asp.79.e6228210.3897/asp.79.e62282.figure110.3897/asp.79.e62282.figure1010.3897/asp.79.e62282.figure410.3897/asp.79.e62282.figure910.3897/asp.79.e62282.figure810.3897/asp.79.e62282.figure210.3897/asp.79.e62282.figure710.3897/asp.79 |
container_title |
Arthropod Systematics & Phylogeny |
container_volume |
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