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dc.contributor.author
Siegwald, Justine
dc.contributor.author
Pastorino, Roberto Santiago Guido
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dc.contributor.author
Oskars, Trond
dc.contributor.author
Malaquias, Manuel António E.
dc.date.available
2021-05-17T16:28:16Z
dc.date.issued
2020-01
dc.identifier.citation
Siegwald, Justine; Pastorino, Roberto Santiago Guido; Oskars, Trond; Malaquias, Manuel António E.; A new species of the deep-sea genus Scaphander (Gastropoda, Cephalaspidea) from the Mar del Plata submarine canyon off Argentina; Rosenstiel School of Marine and Atmospheric Science; Bulletin of Marine Science; 96; 1; 1-2020; 111-126
dc.identifier.issn
0007-4977
dc.identifier.uri
http://hdl.handle.net/11336/132158
dc.description.abstract
Scaphander Montfort, 1810, is a genus of deep-sea, soft-bottom gastropods composed of approximately 23 species distributed worldwide. The systematics of the genus in the Atlantic was recently revised and eight species were recognized. The present study describes a new species (Scaphander meridionalis sp. n.) from the Argentine continental slope using morphological and molecular data. Shells, gizzard plates, radulae, and male reproductive systems were studied by optical and scanning electron microscopy and compared with data from all other known Scaphander species. Bayesian molecular phylogenetics based on two mitochondrial (cytochrome c oxidase subunit I and 16S rRNA) and one nuclear (28S rRNA) genes together with the molecular species delimitation method Automatic Barcode Gap Discovery were used to compare the novel samples with all known Atlantic species. Our results revealed that the Argentinian specimens have a distinct shell and penial papilla and were molecularly 6.35–6.53%, 6.9–7.44%, and 7.99–8.89% distinct (COI uncorrected p-distance) from their closest relatives, the Pacific species Scaphander grandis and Scaphander mundus, and the northern Atlantic species Scaphander nobilis, respectively. Scaphander meridionalis sp. n. is the first species only known from the South Atlantic and its occurrence off Argentina represents a new southern geographical limit of the distribution of the genus in the Atlantic Ocean.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Rosenstiel School of Marine and Atmospheric Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Taxonomy
dc.subject
Gastropods
dc.subject
Scaphandridae
dc.subject
South western Atlantic
dc.subject.classification
Biología Marina, Limnología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
A new species of the deep-sea genus Scaphander (Gastropoda, Cephalaspidea) from the Mar del Plata submarine canyon off Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-02-18T15:44:44Z
dc.journal.volume
96
dc.journal.number
1
dc.journal.pagination
111-126
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Siegwald, Justine. University of Bergen; Noruega
dc.description.fil
Fil: Pastorino, Roberto Santiago Guido. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: Oskars, Trond. University of Bergen; Noruega
dc.description.fil
Fil: Malaquias, Manuel António E.. University of Bergen; Noruega
dc.journal.title
Bulletin of Marine Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.5343/bms.2019.0069
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ingentaconnect.com/content/umrsmas/bullmar/2020/00000096/00000001/art00008
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