Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species
International audience axonomists have generally considered the two bathydraconid species Gymnodraco acuticeps Boulenger, 1902 and Gymnodraco victori Hureau, 1963 as synonymous based on field experience or from personal communications. However, no study has been devoted to that question and here we...
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ftsorbonneuniv:oai:HAL:hal-03787255v1 2024-09-15T17:47:47+00:00 Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species Rey, Olivier Bonillo, Céline, P Gallut, Cyril Cruaud, Corinne Dettaï, Agnès Ozouf-Costaz, Catherine Lecointre, Guillaume Département Systématique et Évolution Muséum national d'Histoire naturelle (MNHN) Sorbonne Université (SU) 2011-06 https://hal.science/hal-03787255 https://doi.org/10.26028/cybium/2011-352-005 en eng HAL CCSD Paris : Muséum national d'histoire naturelle info:eu-repo/semantics/altIdentifier/doi/10.26028/cybium/2011-352-005 hal-03787255 https://hal.science/hal-03787255 doi:10.26028/cybium/2011-352-005 ISSN: 0399-0974 EISSN: 2101-0315 Cybium : Revue Internationale d’Ichtyologie https://hal.science/hal-03787255 Cybium : Revue Internationale d’Ichtyologie, 2011, 35 (2), pp.111-119. ⟨10.26028/cybium/2011-352-005⟩ https://sfi-cybium.fr/fr/naked-dragonfishes-gymnodraco-acuticeps-and-g-victori-bathydraconidae-notothenioidei-terre-ad%C3%A9lie Bathydraconidae East Antarctic Gymnodraco Terre Adélie [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2011 ftsorbonneuniv https://doi.org/10.26028/cybium/2011-352-005 2024-07-25T23:47:48Z International audience axonomists have generally considered the two bathydraconid species Gymnodraco acuticeps Boulenger, 1902 and Gymnodraco victori Hureau, 1963 as synonymous based on field experience or from personal communications. However, no study has been devoted to that question and here we address it using three lines of evidence: comparison of variable DNA sequences, morphology and cytogenetics. We sequenced four molecular markers for a large sampling to test the delimitation between the two species from individuals caught off Terre Adélie (type locality of G. victori); among them is the cytochrome oxidase I (COI) gene, for which a large reference database is available in the Barcode of Life project for many taxa. However it contains only two Gymnodraco acuticeps sequences and none from G. victori. The karyotype of G. victori was obtained and compared with the one from G. acuticeps. From specimens from the MNHN collections, we recorded the two external characters most commonly used in the field to assign individuals to these species. The maximum divergence recorded in the COI sequences between two Gymnodraco specimens is 0.005% (K2P,) or 0.03% (p-distance), and there are no distinct clusters separating the two morphological entities with any of the four markers: all sequences were identical or nearly identical. No difference was found between the karyotypes of the two species. When a large number of specimens are studied, the pattern of the anterior canine teeth of the lower jaw and the other most visible external features used to distinguish the species by Hureau (1963) are actually more variable than originally described. We place G. victori and G. acuticeps into synonymy, the former being a junior synonym of G. acuticeps. Article in Journal/Newspaper Antarc* Antarctic HAL Sorbonne Université |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Bathydraconidae East Antarctic Gymnodraco Terre Adélie [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Bathydraconidae East Antarctic Gymnodraco Terre Adélie [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology Rey, Olivier Bonillo, Céline, P Gallut, Cyril Cruaud, Corinne Dettaï, Agnès Ozouf-Costaz, Catherine Lecointre, Guillaume Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species |
topic_facet |
Bathydraconidae East Antarctic Gymnodraco Terre Adélie [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience axonomists have generally considered the two bathydraconid species Gymnodraco acuticeps Boulenger, 1902 and Gymnodraco victori Hureau, 1963 as synonymous based on field experience or from personal communications. However, no study has been devoted to that question and here we address it using three lines of evidence: comparison of variable DNA sequences, morphology and cytogenetics. We sequenced four molecular markers for a large sampling to test the delimitation between the two species from individuals caught off Terre Adélie (type locality of G. victori); among them is the cytochrome oxidase I (COI) gene, for which a large reference database is available in the Barcode of Life project for many taxa. However it contains only two Gymnodraco acuticeps sequences and none from G. victori. The karyotype of G. victori was obtained and compared with the one from G. acuticeps. From specimens from the MNHN collections, we recorded the two external characters most commonly used in the field to assign individuals to these species. The maximum divergence recorded in the COI sequences between two Gymnodraco specimens is 0.005% (K2P,) or 0.03% (p-distance), and there are no distinct clusters separating the two morphological entities with any of the four markers: all sequences were identical or nearly identical. No difference was found between the karyotypes of the two species. When a large number of specimens are studied, the pattern of the anterior canine teeth of the lower jaw and the other most visible external features used to distinguish the species by Hureau (1963) are actually more variable than originally described. We place G. victori and G. acuticeps into synonymy, the former being a junior synonym of G. acuticeps. |
author2 |
Département Systématique et Évolution Muséum national d'Histoire naturelle (MNHN) Sorbonne Université (SU) |
format |
Article in Journal/Newspaper |
author |
Rey, Olivier Bonillo, Céline, P Gallut, Cyril Cruaud, Corinne Dettaï, Agnès Ozouf-Costaz, Catherine Lecointre, Guillaume |
author_facet |
Rey, Olivier Bonillo, Céline, P Gallut, Cyril Cruaud, Corinne Dettaï, Agnès Ozouf-Costaz, Catherine Lecointre, Guillaume |
author_sort |
Rey, Olivier |
title |
Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species |
title_short |
Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species |
title_full |
Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species |
title_fullStr |
Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species |
title_full_unstemmed |
Naked dragonfishes Gymnodraco acuticeps and G. victori (Bathydraconidae, Notothenioidei) off Terre Adélie are a single species |
title_sort |
naked dragonfishes gymnodraco acuticeps and g. victori (bathydraconidae, notothenioidei) off terre adélie are a single species |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-03787255 https://doi.org/10.26028/cybium/2011-352-005 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0399-0974 EISSN: 2101-0315 Cybium : Revue Internationale d’Ichtyologie https://hal.science/hal-03787255 Cybium : Revue Internationale d’Ichtyologie, 2011, 35 (2), pp.111-119. ⟨10.26028/cybium/2011-352-005⟩ https://sfi-cybium.fr/fr/naked-dragonfishes-gymnodraco-acuticeps-and-g-victori-bathydraconidae-notothenioidei-terre-ad%C3%A9lie |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.26028/cybium/2011-352-005 hal-03787255 https://hal.science/hal-03787255 doi:10.26028/cybium/2011-352-005 |
op_doi |
https://doi.org/10.26028/cybium/2011-352-005 |
_version_ |
1810497358624980992 |