| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
New species of the xenophyophore genus Aschemonella (Rhizaria: Foraminifera) from areas of the abyssal eastern Pacific licensed for polymetallic nodule exploration
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| Autores: |
Gooday, Andrew J.
Holzmann, Maria
Caulle, Clemence
Goineau, Aurelie
Jones, Daniel Ob
Kamenskaya, Olga
Simon-lledo, Erik
Weber, Alexandra A. -t.
Pawlowski, Jan
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| Data: |
2018-03
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| Ano: |
2018
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| Palavras-chave: |
Abyssal megafauna
Biodiversity
Clarion-Clipperton Zone
Deep-sea benthos
Deep-sea mining
Protist
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| Resumo: |
We describe Aschemonella monile Gooday and Holzmann sp. nov. from the Clarion-Clipperton Zone (CCZ, abyssal eastern equatorial Pacific), a region characterized by commercially significant concentrations of polymetallic nodules. The new species is the most abundant xenophyophore (giant agglutinated foraminifera) in our main sampling area (12-14 degrees N; 116 degrees 30'-117 degrees 26'W). Additional specimens originate from the central CCZ, and from a third area, similar to 900 km NW of the main area, where A. monile numerically dominates the megabenthos in photographic surveys of the seafloor (average densities 1.54 individuals/m(2); peak densities > 3 individuals/m(2)). Aschemonella monile is much larger (>= 7 cm in length) than previously described species of the genus, with a test comprising an irregular sequence of self-contained, partly overlapping 'segments', creating a multichambered structure. A similar, much rarer species from the main study area, described here as Aschemonella aspera Gooday and Holzmann sp. nov., has an unsegmented test with a very rough, coarsely agglutinated wall. Genetic data suggest that A. monile is distinct from A. aspera and most closely related to a group comprising Rhizammina algaeformis and Aschemonella ramuliformis. Both new species have delicate tests that are often attached to nodule surfaces, making them particularly vulnerable to seafloor disturbances.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00435/54663/56099.pdf
DOI:10.1093/zoolinnean/zlx052
https://archimer.ifremer.fr/doc/00435/54663/
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| Editor: |
Oxford Univ Press
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| Relação: |
info:eu-repo/grantAgreement/EC/FP7/603418/EU//MIDAS
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| Formato: |
application/pdf
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| Fonte: |
Zoological Journal Of The Linnean Society (0024-4082) (Oxford Univ Press), 2018-03 , Vol. 182 , N. 3 , P. 479-499
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| Direitos: |
2017 The Linnean Society of London, Zoological Journal of the Linnean Society This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that ...
info:eu-repo/semantics/openAccess
restricted use
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