Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae)
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Neotropical ichthyology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100205 |
Resumo: | ABSTRACT Specimens historically identified as Odontostilbe microcephala from the upper rio Paraná and Andean piedmont tributaries of the río Paraguay are reviewed and split in three species. We found that the distribution of O. microcephala is restricted to the Andean slope of the río Paraguay basin. The species is distinguished from congeners with subterminal mouth by the elongate body, usually 10-12 gill rakers on upper branch and smaller horizontal orbital diameter (24.6-32.8 % HL, mean 28.7%). Specimens from upper rio Paraná constitute two new species, diagnosed from other Cheirodontinae by the presence of mesopterygoid teeth, grouped on median portion and forming a continuous row. The new species are distinguished from each other by having premaxillary teeth with five cusps vs. nine cusps and by the number of lamellae in left and right sides of central median raphe of olfactory rosette with 20-21 vs. 11-12. |
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Neotropical ichthyology (Online) |
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|
spelling |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae)BiodiversityCharacidaeLa Plata River basinMesopterygoid teethTaxonomyABSTRACT Specimens historically identified as Odontostilbe microcephala from the upper rio Paraná and Andean piedmont tributaries of the río Paraguay are reviewed and split in three species. We found that the distribution of O. microcephala is restricted to the Andean slope of the río Paraguay basin. The species is distinguished from congeners with subterminal mouth by the elongate body, usually 10-12 gill rakers on upper branch and smaller horizontal orbital diameter (24.6-32.8 % HL, mean 28.7%). Specimens from upper rio Paraná constitute two new species, diagnosed from other Cheirodontinae by the presence of mesopterygoid teeth, grouped on median portion and forming a continuous row. The new species are distinguished from each other by having premaxillary teeth with five cusps vs. nine cusps and by the number of lamellae in left and right sides of central median raphe of olfactory rosette with 20-21 vs. 11-12.Sociedade Brasileira de Ictiologia2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100205Neotropical Ichthyology v.16 n.1 2018reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/1982-0224-20170047info:eu-repo/semantics/openAccessChuctaya,JuniorBührnheim,Cristina M.Malabarba,Luiz R.eng2018-03-28T00:00:00Zoai:scielo:S1679-62252018000100205Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2018-03-28T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false |
dc.title.none.fl_str_mv |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
title |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
spellingShingle |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) Chuctaya,Junior Biodiversity Characidae La Plata River basin Mesopterygoid teeth Taxonomy |
title_short |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
title_full |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
title_fullStr |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
title_full_unstemmed |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
title_sort |
Two new species of Odontostilbe historically hidden under O. microcephala (Characiformes: Cheirodontinae) |
author |
Chuctaya,Junior |
author_facet |
Chuctaya,Junior Bührnheim,Cristina M. Malabarba,Luiz R. |
author_role |
author |
author2 |
Bührnheim,Cristina M. Malabarba,Luiz R. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Chuctaya,Junior Bührnheim,Cristina M. Malabarba,Luiz R. |
dc.subject.por.fl_str_mv |
Biodiversity Characidae La Plata River basin Mesopterygoid teeth Taxonomy |
topic |
Biodiversity Characidae La Plata River basin Mesopterygoid teeth Taxonomy |
description |
ABSTRACT Specimens historically identified as Odontostilbe microcephala from the upper rio Paraná and Andean piedmont tributaries of the río Paraguay are reviewed and split in three species. We found that the distribution of O. microcephala is restricted to the Andean slope of the río Paraguay basin. The species is distinguished from congeners with subterminal mouth by the elongate body, usually 10-12 gill rakers on upper branch and smaller horizontal orbital diameter (24.6-32.8 % HL, mean 28.7%). Specimens from upper rio Paraná constitute two new species, diagnosed from other Cheirodontinae by the presence of mesopterygoid teeth, grouped on median portion and forming a continuous row. The new species are distinguished from each other by having premaxillary teeth with five cusps vs. nine cusps and by the number of lamellae in left and right sides of central median raphe of olfactory rosette with 20-21 vs. 11-12. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100205 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100205 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1982-0224-20170047 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
dc.source.none.fl_str_mv |
Neotropical Ichthyology v.16 n.1 2018 reponame:Neotropical ichthyology (Online) instname:Sociedade Brasileira de Ictiologia (SBI) instacron:SBI |
instname_str |
Sociedade Brasileira de Ictiologia (SBI) |
instacron_str |
SBI |
institution |
SBI |
reponame_str |
Neotropical ichthyology (Online) |
collection |
Neotropical ichthyology (Online) |
repository.name.fl_str_mv |
Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI) |
repository.mail.fl_str_mv |
||neoichth@nupelia.uem.br |
_version_ |
1752122182669959168 |