Data/hora: 09/06/2024 15:43:25

Provedor de dados: 	5	
País: 	France	
Título: 	New species of the xenophyophore genus Aschemonella (Rhizaria: Foraminifera) from areas of the abyssal eastern Pacific licensed for polymetallic nodule exploration	
Autores: 	Gooday, Andrew J.; Holzmann, Maria; Caulle, Clemence; Goineau, Aurelie; Jones, Daniel Ob; Kamenskaya, Olga; Simon-lledo, Erik; Weber, Alexandra A. -t.; Pawlowski, Jan.	
Data: 	2018-03	
Ano: 	2018	
Palavras-chave: 	Abyssal megafauna; Biodiversity; Clarion-Clipperton Zone; Deep-sea benthos; Deep-sea mining; Protist.	
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 &gt; 3 individuals/m(2)). Aschemonella monile is much larger (&gt;= 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.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00435/54663/56099.pdf

DOI:10.1093/zoolinnean/zlx052

https://archimer.ifremer.fr/doc/00435/54663/	
Editor: 	Oxford Univ Press	
Relação: 	info:eu-repo/grantAgreement/EC/FP7/603418/EU//MIDAS	
Formato: 	application/pdf	
Fonte: 	Zoological Journal Of The Linnean Society (0024-4082) (Oxford Univ Press), 2018-03 , Vol. 182 , N. 3 , P. 479-499	
Fonte: 	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