New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation

Detalhes bibliográficos
Autor(a) principal: Dagosta,Fernando C. P.
Data de Publicação: 2022
Outros Autores: Marinho,Manoela M. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Neotropical ichthyology (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252022000100202
Resumo: Abstract A new species of Astyanax is described from the rio Salobra, tributary of rio Cuiabá, rio Paraguai basin. The new taxon can be distinguished from its congeners by having a well-defined dark midlateral stripe on body extending from the posterior margin of the opercle to the base of middle caudal-fin rays and a single vertical elongate humeral blotch. Although the new species is described in Astyanax, some specimens present an incomplete or a discontinuous series of perforated scales in the lateral line. Therefore, a discussion on its generic allocation is presented. Comments on different patterns of coloration among dark-striped species of Astyanax are also provided. The discovery of a new species in an underwater tourist point relatively near a large urban center underscores that even fish species daily observed by hundreds of people in limpid waters may lack a formal taxonomic identity. Such finding also highlights how the megadiverse Brazilian freshwater ichthyofauna still needs efforts and investments to identify and describe new taxa.
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spelling New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocationLateral lineNobresLongitudinal stripeTaxonomyTourist destinationAbstract A new species of Astyanax is described from the rio Salobra, tributary of rio Cuiabá, rio Paraguai basin. The new taxon can be distinguished from its congeners by having a well-defined dark midlateral stripe on body extending from the posterior margin of the opercle to the base of middle caudal-fin rays and a single vertical elongate humeral blotch. Although the new species is described in Astyanax, some specimens present an incomplete or a discontinuous series of perforated scales in the lateral line. Therefore, a discussion on its generic allocation is presented. Comments on different patterns of coloration among dark-striped species of Astyanax are also provided. The discovery of a new species in an underwater tourist point relatively near a large urban center underscores that even fish species daily observed by hundreds of people in limpid waters may lack a formal taxonomic identity. Such finding also highlights how the megadiverse Brazilian freshwater ichthyofauna still needs efforts and investments to identify and describe new taxa.Sociedade Brasileira de Ictiologia2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252022000100202Neotropical Ichthyology v.20 n.1 2022reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/1982-0224-2021-0127info:eu-repo/semantics/openAccessDagosta,Fernando C. P.Marinho,Manoela M. F.eng2022-03-25T00:00:00Zoai:scielo:S1679-62252022000100202Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2022-03-25T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false
dc.title.none.fl_str_mv New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
title New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
spellingShingle New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
Dagosta,Fernando C. P.
Lateral line
Nobres
Longitudinal stripe
Taxonomy
Tourist destination
title_short New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
title_full New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
title_fullStr New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
title_full_unstemmed New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
title_sort New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation
author Dagosta,Fernando C. P.
author_facet Dagosta,Fernando C. P.
Marinho,Manoela M. F.
author_role author
author2 Marinho,Manoela M. F.
author2_role author
dc.contributor.author.fl_str_mv Dagosta,Fernando C. P.
Marinho,Manoela M. F.
dc.subject.por.fl_str_mv Lateral line
Nobres
Longitudinal stripe
Taxonomy
Tourist destination
topic Lateral line
Nobres
Longitudinal stripe
Taxonomy
Tourist destination
description Abstract A new species of Astyanax is described from the rio Salobra, tributary of rio Cuiabá, rio Paraguai basin. The new taxon can be distinguished from its congeners by having a well-defined dark midlateral stripe on body extending from the posterior margin of the opercle to the base of middle caudal-fin rays and a single vertical elongate humeral blotch. Although the new species is described in Astyanax, some specimens present an incomplete or a discontinuous series of perforated scales in the lateral line. Therefore, a discussion on its generic allocation is presented. Comments on different patterns of coloration among dark-striped species of Astyanax are also provided. The discovery of a new species in an underwater tourist point relatively near a large urban center underscores that even fish species daily observed by hundreds of people in limpid waters may lack a formal taxonomic identity. Such finding also highlights how the megadiverse Brazilian freshwater ichthyofauna still needs efforts and investments to identify and describe new taxa.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
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=S1679-62252022000100202
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252022000100202
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1982-0224-2021-0127
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.20 n.1 2022
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
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