دورية أكاديمية
أعرض في EDS

Eurythenes atacamensis sp. nov. (Crustacea: Amphipoda) exhibits ontogenetic vertical stratification across abyssal and hadal depths in the Atacama Trench, eastern South Pacific Ocean.

التفاصيل البيبلوغرافية
العنوان: Eurythenes atacamensis sp. nov. (Crustacea: Amphipoda) exhibits ontogenetic vertical stratification across abyssal and hadal depths in the Atacama Trench, eastern South Pacific Ocean.
المؤلفون: Weston JNJ; School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK., Espinosa-Leal L; Programa de Doctorado en Oceanografía, Departamento de Oceanografía, Universidad de Concepción, P.O. Box 160 C, Concepción, Chile.; Departamento de Oceanografía and Instituto Milenio de Oceanografía, Universidad de Concepción, P.O. Box 160 C, Concepción, Chile., Wainwright JA; School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK., Stewart ECD; School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK.; Life Sciences, The Natural History Museum, Cromwell Road, London, SW7 5BD UK., González CE; Departamento de Oceanografía and Instituto Milenio de Oceanografía, Universidad de Concepción, P.O. Box 160 C, Concepción, Chile., Linley TD; School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK., Reid WDK; School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK., Hidalgo P; Departamento de Oceanografía and Instituto Milenio de Oceanografía, Universidad de Concepción, P.O. Box 160 C, Concepción, Chile., Oliva ME; Instituto de Ciencias Naturales Alexander von Humboldt, Facultad de Ciencias del Mar y Recursos Biológicos, Universidad de Antofagasta, Antofagasta, Chile., Ulloa O; Departamento de Oceanografía and Instituto Milenio de Oceanografía, Universidad de Concepción, P.O. Box 160 C, Concepción, Chile., Wenzhöfer F; HGF-MPG Group for Deep Sea Ecology and Technology, Alfred-Wegener-Institute Helmholtz-Center for Polar and Marine Research, 27570 Bremerhaven, Germany.; Max Planck Institute for Marine Microbiology, 28358 Bremen, Germany.; Department of Biology, Nordcee and HADAL, University of Southern Denmark, 5230 Odense M, Denmark., Glud RN; Department of Biology, Nordcee and HADAL, University of Southern Denmark, 5230 Odense M, Denmark.; Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477 Japan., Escribano R; Departamento de Oceanografía and Instituto Milenio de Oceanografía, Universidad de Concepción, P.O. Box 160 C, Concepción, Chile., Jamieson AJ; School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU UK.
المصدر: Marine biodiversity : a journal of the Senckenberg Research Institute [Mar Biodivers] 2021; Vol. 51 (3), pp. 51. Date of Electronic Publication: 2021 May 14.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Springer Country of Publication: Germany NLM ID: 101524051 Publication Model: Print-Electronic Cited Medium: Print ISSN: 1867-1616 (Print) Linking ISSN: 18671616 NLM ISO Abbreviation: Mar Biodivers Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: [Berlin] : Springer, 2009-
مستخلص: Eurythenes S.I. Smith in Scudder, 1882 (Crustacea: Amphipoda) are prevalent scavengers of the benthopelagic community from bathyal to hadal depths. While a well-studied genus, molecular systematic studies have uncovered cryptic speciation and multiple undescribed lineages. Here, we apply an integrative taxonomic approach and describe the tenth species, Eurythenes atacamensis sp. nov., based on specimens from the 2018 Atacamex and RV Sonne SO261 Expeditions to the southern sector of the Peru-Chile Trench, the Atacama Trench (24-⁠21°S). Eurythenes atacamensis sp. nov. is a large species, max. observed length 83.2 mm, possesses diagnostic features, including a short gnathopod 1 palm and a chelate gnathopod 2 palm, and a distinct genetic lineage based on a 16S rRNA and COI phylogeny. This species is a dominant bait-attending fauna with an extensive bathymetric range, spanning from 4974 to 8081 m. The RV Sonne SO261 specimens were recovered along a 10-station transect from abyssal to hadal depths and further examined for demographic and bathymetric-related patterns. Ontogenetic vertical stratification was evident across the trench axis, with only juveniles present at abyssal depths (4974-6025 m). Total length-depth analysis revealed that the size of females was unrelated to depth, whereas juveniles followed a sigmoidal relationship with a step-up in size at depths >7200 m. Thus, these bathymetric trends suggest that juveniles and females employ differing ecological strategies in subduction trench environments. This study highlights that even dominant and ecologically important species are still being discovered within the abyssal and hadal environments. Continued systematic expeditions will lead to an improved understanding of the eco-evolutionary drivers of speciation in the world's largest ecosystem.
Competing Interests: Conflict of interestThe authors declare no competing interests.
(© The Author(s) 2021.)
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فهرسة مساهمة: Keywords: Cryptic species; Deep sea; Eurythenes key; Integrated taxonomy; New species; Peru-Chile Trench
تواريخ الأحداث: Date Created: 20210519 Latest Revision: 20231111
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC8120496
DOI: 10.1007/s12526-021-01182-z
PMID: 34007343
قاعدة البيانات: MEDLINE
الوصف
تدمد:1867-1616
DOI:10.1007/s12526-021-01182-z