Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding

A new species of Dipturus is described from ten specimens collected off Patagonia, Argentina. Morphological and molecular approaches were used to compare among specimens of recognized Dipturus species. By comparing morphometric, meristic and mitochondrial cytochrome c oxidase I (COI) sequence data,...

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Autores principales: De Astarloa, J.M.D., Mabragaña, E., Hanner, R., Figueroa, D.E.
Formato: JOUR
Lenguaje:English
Materias:
Argentina
COI
Dipturus argentinensis
DNA barcode
N. sp
Rajidae
Dipturus
Dipturus chilensis
Dipturus trachyderma
Raja rhina
Rajiformes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11755326_v_n1921_p35_DeAstarloa
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11755326_v_n1921_p35_DeAstarloa
record_format dspace
spelling todo:paper_11755326_v_n1921_p35_DeAstarloa2023-10-03T16:08:36Z Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding De Astarloa, J.M.D. Mabragaña, E. Hanner, R. Figueroa, D.E. Argentina COI Dipturus argentinensis DNA barcode N. sp Rajidae Dipturus Dipturus chilensis Dipturus trachyderma Raja rhina Rajidae Rajiformes A new species of Dipturus is described from ten specimens collected off Patagonia, Argentina. Morphological and molecular approaches were used to compare among specimens of recognized Dipturus species. By comparing morphometric, meristic and mitochondrial cytochrome c oxidase I (COI) sequence data, specimens referred to as longnose skate and originally regarded as D. chilensis were shown to be a discrete species as distinguished from both the Yellownose skate, D. chilensis and the Roughskin skate, D. trachyderma. Dipturus argentinensis n. sp. can be distinguished from all other southwestern Atlantic longnose skate species by its color pattern, lack of squamation on both upper and lower surfaces of the disc, and a long, thin tail that is approximately half the total length. The new species has one median row of 10 to 24 small caudal thorns, one or two interdorsal thorns and 35 to 40, and 34 to 43 tooth rows on upper and lower jaws, respectively. The 648 base pair COI mitochondrial DNA "barcodes" derived from specimens of D. argentinensis are identical to each other and exhibit greater than 3% sequence divergence from all other Dipturus species similarly characterized to date. Taken together, these independent morphological and molecular observations serve to corroborate one another and thus provide strong evidence for the recognition of D. argentinensis as a new species. Copyright © 2008 - Magnolia Press. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11755326_v_n1921_p35_DeAstarloa
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Argentina
COI
Dipturus argentinensis
DNA barcode
N. sp
Rajidae
Dipturus
Dipturus chilensis
Dipturus trachyderma
Raja rhina
Rajidae
Rajiformes
spellingShingle Argentina
COI
Dipturus argentinensis
DNA barcode
N. sp
Rajidae
Dipturus
Dipturus chilensis
Dipturus trachyderma
Raja rhina
Rajidae
Rajiformes
De Astarloa, J.M.D.
Mabragaña, E.
Hanner, R.
Figueroa, D.E.
Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding
topic_facet Argentina
COI
Dipturus argentinensis
DNA barcode
N. sp
Rajidae
Dipturus
Dipturus chilensis
Dipturus trachyderma
Raja rhina
Rajidae
Rajiformes
description A new species of Dipturus is described from ten specimens collected off Patagonia, Argentina. Morphological and molecular approaches were used to compare among specimens of recognized Dipturus species. By comparing morphometric, meristic and mitochondrial cytochrome c oxidase I (COI) sequence data, specimens referred to as longnose skate and originally regarded as D. chilensis were shown to be a discrete species as distinguished from both the Yellownose skate, D. chilensis and the Roughskin skate, D. trachyderma. Dipturus argentinensis n. sp. can be distinguished from all other southwestern Atlantic longnose skate species by its color pattern, lack of squamation on both upper and lower surfaces of the disc, and a long, thin tail that is approximately half the total length. The new species has one median row of 10 to 24 small caudal thorns, one or two interdorsal thorns and 35 to 40, and 34 to 43 tooth rows on upper and lower jaws, respectively. The 648 base pair COI mitochondrial DNA "barcodes" derived from specimens of D. argentinensis are identical to each other and exhibit greater than 3% sequence divergence from all other Dipturus species similarly characterized to date. Taken together, these independent morphological and molecular observations serve to corroborate one another and thus provide strong evidence for the recognition of D. argentinensis as a new species. Copyright © 2008 - Magnolia Press.
format JOUR
author De Astarloa, J.M.D.
Mabragaña, E.
Hanner, R.
Figueroa, D.E.
author_facet De Astarloa, J.M.D.
Mabragaña, E.
Hanner, R.
Figueroa, D.E.
author_sort De Astarloa, J.M.D.
title Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding
title_short Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding
title_full Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding
title_fullStr Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding
title_full_unstemmed Morphological and molecular evidence for a new species of longnose skate (Rajiformes: Rajidae: Dipturus) from Argentinean waters based on DNA barcoding
title_sort morphological and molecular evidence for a new species of longnose skate (rajiformes: rajidae: dipturus) from argentinean waters based on dna barcoding
url http://hdl.handle.net/20.500.12110/paper_11755326_v_n1921_p35_DeAstarloa
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AT hannerr morphologicalandmolecularevidenceforanewspeciesoflongnoseskaterajiformesrajidaedipturusfromargentineanwatersbasedondnabarcoding
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