Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae)
The taxonomic status and identification of the deep-sea sharks of the genus Deania have been controversial mainly due to morphological similarities between some of its species. The aim of this work was to update the taxonomic status of Deania hystricosa (and other putative species, such as D. calceu...
Published in: | Regional Studies in Marine Science |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2023
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/350027 https://doi.org/10.1016/j.rsma.2023.103220 https://api.elsevier.com/content/abstract/scopus_id/85173938925 |
id |
ftcsic:oai:digital.csic.es:10261/350027 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/350027 2024-06-23T07:55:05+00:00 Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) Marrero, M. Pascual-Alayón, Pedro José Martín, María Virginia Casañas-Machin, Iván Freitas, M. Hernández, M. 2023-12-20 http://hdl.handle.net/10261/350027 https://doi.org/10.1016/j.rsma.2023.103220 https://api.elsevier.com/content/abstract/scopus_id/85173938925 en eng Elsevier Regional Studies in Marine Science Publisher's version https://doi.org/10.1016/j.rsma.2023.103220 Sí Regional Studies in Marine Science 67 : 103220 (2023) http://hdl.handle.net/10261/350027 doi:10.1016/j.rsma.2023.103220 2352-4855 2-s2.0-85173938925 https://api.elsevier.com/content/abstract/scopus_id/85173938925 open 16S rRNA COI Dermal denticles Elasmobranchs Taxonomy artículo http://purl.org/coar/resource_type/c_6501 2023 ftcsic https://doi.org/10.1016/j.rsma.2023.103220 2024-05-29T00:07:14Z The taxonomic status and identification of the deep-sea sharks of the genus Deania have been controversial mainly due to morphological similarities between some of its species. The aim of this work was to update the taxonomic status of Deania hystricosa (and other putative species, such as D. calceus and D. profundorum) and the validity as a true taxa using specimens from the Atlantic (East-Central and Southeast) and the North Atlantic (Cantabrian Sea) as determined by analysis of sequences of COI and 16 S rRNA genes and comparative analysis of meristics of skin on different body parts. Traditionally, individuals of the genus Deania, including D. hystricosa, D. quadrispinosa, D. calceus and D. profundorum, were classified according to the length of the denticle crown. In our study, this character was found to be significantly dependent on the sexual maturity stage or length of the individual and the area of the body where the denticles were taken. Here, 23 individuals of these species were caught during campaigns carried out in the Atlantic Ocean (East-Central and Southeast) and in the North Atlantic (Cantabrian Sea), in order to be analysed for the mitochondrial genes 16 S ribosomal RNA (16 S rRNA) and cytochrome oxidase subunit I (COI). Phylogenetic analysis of concatenated sequences showed two clearly differentiated groups: one consisting of the species D. profundorum, and the other one consisting of the species belonging to D. calceus and D. hystricosa. The genetic differences measured between D. profundorum group and calceus-hystricosa group (3.9%) were within the range of congeneric species, whereas those differences obtained between D. calceus and D. hystricosa (0.2%) were within the range of intraspecific variation of any of the 3 species analyzed. These results suggest that D. calceus and D. hystricosa are synonyms. Peer reviewed Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Regional Studies in Marine Science 67 103220 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
16S rRNA COI Dermal denticles Elasmobranchs Taxonomy |
spellingShingle |
16S rRNA COI Dermal denticles Elasmobranchs Taxonomy Marrero, M. Pascual-Alayón, Pedro José Martín, María Virginia Casañas-Machin, Iván Freitas, M. Hernández, M. Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) |
topic_facet |
16S rRNA COI Dermal denticles Elasmobranchs Taxonomy |
description |
The taxonomic status and identification of the deep-sea sharks of the genus Deania have been controversial mainly due to morphological similarities between some of its species. The aim of this work was to update the taxonomic status of Deania hystricosa (and other putative species, such as D. calceus and D. profundorum) and the validity as a true taxa using specimens from the Atlantic (East-Central and Southeast) and the North Atlantic (Cantabrian Sea) as determined by analysis of sequences of COI and 16 S rRNA genes and comparative analysis of meristics of skin on different body parts. Traditionally, individuals of the genus Deania, including D. hystricosa, D. quadrispinosa, D. calceus and D. profundorum, were classified according to the length of the denticle crown. In our study, this character was found to be significantly dependent on the sexual maturity stage or length of the individual and the area of the body where the denticles were taken. Here, 23 individuals of these species were caught during campaigns carried out in the Atlantic Ocean (East-Central and Southeast) and in the North Atlantic (Cantabrian Sea), in order to be analysed for the mitochondrial genes 16 S ribosomal RNA (16 S rRNA) and cytochrome oxidase subunit I (COI). Phylogenetic analysis of concatenated sequences showed two clearly differentiated groups: one consisting of the species D. profundorum, and the other one consisting of the species belonging to D. calceus and D. hystricosa. The genetic differences measured between D. profundorum group and calceus-hystricosa group (3.9%) were within the range of congeneric species, whereas those differences obtained between D. calceus and D. hystricosa (0.2%) were within the range of intraspecific variation of any of the 3 species analyzed. These results suggest that D. calceus and D. hystricosa are synonyms. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Marrero, M. Pascual-Alayón, Pedro José Martín, María Virginia Casañas-Machin, Iván Freitas, M. Hernández, M. |
author_facet |
Marrero, M. Pascual-Alayón, Pedro José Martín, María Virginia Casañas-Machin, Iván Freitas, M. Hernández, M. |
author_sort |
Marrero, M. |
title |
Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) |
title_short |
Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) |
title_full |
Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) |
title_fullStr |
Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) |
title_full_unstemmed |
Taxonomic status of deep-sea sharks Deania calceus and D. hystricosa (Centrophoridae) |
title_sort |
taxonomic status of deep-sea sharks deania calceus and d. hystricosa (centrophoridae) |
publisher |
Elsevier |
publishDate |
2023 |
url |
http://hdl.handle.net/10261/350027 https://doi.org/10.1016/j.rsma.2023.103220 https://api.elsevier.com/content/abstract/scopus_id/85173938925 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Regional Studies in Marine Science Publisher's version https://doi.org/10.1016/j.rsma.2023.103220 Sí Regional Studies in Marine Science 67 : 103220 (2023) http://hdl.handle.net/10261/350027 doi:10.1016/j.rsma.2023.103220 2352-4855 2-s2.0-85173938925 https://api.elsevier.com/content/abstract/scopus_id/85173938925 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.rsma.2023.103220 |
container_title |
Regional Studies in Marine Science |
container_volume |
67 |
container_start_page |
103220 |
_version_ |
1802647502126579712 |