Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus?
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1139/gen-2015-0166 http://hdl.handle.net/11449/159143 |
Resumo: | The combination of DNA barcodes and geometric morphometrics is useful to discriminate taxonomically controversial species, providing more precise estimates of biodiversity. Therefore, our goal was to assess the genetic and morphometric diversity in Nematocharax, a controversial monotypic and sexually dimorphic genus of Neotropical fish, based on sequencing of cytochrome c oxidase subunit I (COI) and morphometric analyses in seven populations of N. venustus from coastal rivers in Brazil. The average pairwise intrapopulation divergence in COI ranged from 0 to 2.2%, while the average pairwise interpopulation divergence varied from 0 to 7.5%. The neighbour-joining (NJ) tree resulted in five genetic groups (bootstrap >= 97%), which correspond to the five clusters delimited by the BIN System, GMYC, and bPTP, indicating that there might be at least five species (or OTUs) within Nematocharax. Morphometric differences among these genetic lineages were also identified. Apparently, sexual selection, restricted dispersal, and geographic isolation might have acted synergistically to cause the evolutionary split of populations. These data challenge the current view that Nematocharax is a monotypic genus inasmuch as evolutionarily significant units or even distinguished species were identified. Therefore, we recommend that the highly impacted coastal basins in northeastern Brazil should be prioritized in conservation plans. |
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Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus?COIDNA barcodingichthyofaunageometric morphometricsspecies delimitationThe combination of DNA barcodes and geometric morphometrics is useful to discriminate taxonomically controversial species, providing more precise estimates of biodiversity. Therefore, our goal was to assess the genetic and morphometric diversity in Nematocharax, a controversial monotypic and sexually dimorphic genus of Neotropical fish, based on sequencing of cytochrome c oxidase subunit I (COI) and morphometric analyses in seven populations of N. venustus from coastal rivers in Brazil. The average pairwise intrapopulation divergence in COI ranged from 0 to 2.2%, while the average pairwise interpopulation divergence varied from 0 to 7.5%. The neighbour-joining (NJ) tree resulted in five genetic groups (bootstrap >= 97%), which correspond to the five clusters delimited by the BIN System, GMYC, and bPTP, indicating that there might be at least five species (or OTUs) within Nematocharax. Morphometric differences among these genetic lineages were also identified. Apparently, sexual selection, restricted dispersal, and geographic isolation might have acted synergistically to cause the evolutionary split of populations. These data challenge the current view that Nematocharax is a monotypic genus inasmuch as evolutionarily significant units or even distinguished species were identified. Therefore, we recommend that the highly impacted coastal basins in northeastern Brazil should be prioritized in conservation plans.Fundacao de Amparo a Pesquisa do Estado da Bahia (FAPESB)Univ Estadual Sudoeste Bahia, Dept Biol Sci, Ave Jose Moreira Sobrinho, BR-45206190 Jequie, BA, BrazilUniv Estadual Paulista, Dept Zool, Biosci Inst, Ave 24-A,1515 Bela Vista, BR-13506970 Sao Paulo, BrazilUniv Fed Para, Inst Coastal Studies, Alameda Leandro Ribeiro S-N, BR-68600000 Braganca, Para, BrazilUniv Estadual Paulista, Dept Zool, Biosci Inst, Ave 24-A,1515 Bela Vista, BR-13506970 Sao Paulo, BrazilFundacao de Amparo a Pesquisa do Estado da Bahia (FAPESB): PNE0019/2011Fundacao de Amparo a Pesquisa do Estado da Bahia (FAPESB): RED0009/2013Canadian Science Publishing, Nrc Research PressUniv Estadual Sudoeste BahiaUniversidade Estadual Paulista (Unesp)Univ Fed ParaBarreto, Silvia BrittoNunes, Lorena AndradeSilva, Andre Teixeira da [UNESP]Juca-Chagas, RicardoDiniz, DeboraSampaio, IracildaSchneider, HoracioAntunes de Mello Affonso, Paulo Roberto2018-11-26T15:31:34Z2018-11-26T15:31:34Z2016-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article851-865application/pdfhttp://dx.doi.org/10.1139/gen-2015-0166Genome. Ottawa: Canadian Science Publishing, Nrc Research Press, v. 59, n. 10, p. 851-865, 2016.0831-2796http://hdl.handle.net/11449/15914310.1139/gen-2015-0166WOS:000385852100007WOS000385852100007.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenome0,655info:eu-repo/semantics/openAccess2023-11-07T06:08:32Zoai:repositorio.unesp.br:11449/159143Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:03:51.273495Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
title |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
spellingShingle |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? Barreto, Silvia Britto COI DNA barcoding ichthyofauna geometric morphometrics species delimitation |
title_short |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
title_full |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
title_fullStr |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
title_full_unstemmed |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
title_sort |
Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus? |
author |
Barreto, Silvia Britto |
author_facet |
Barreto, Silvia Britto Nunes, Lorena Andrade Silva, Andre Teixeira da [UNESP] Juca-Chagas, Ricardo Diniz, Debora Sampaio, Iracilda Schneider, Horacio Antunes de Mello Affonso, Paulo Roberto |
author_role |
author |
author2 |
Nunes, Lorena Andrade Silva, Andre Teixeira da [UNESP] Juca-Chagas, Ricardo Diniz, Debora Sampaio, Iracilda Schneider, Horacio Antunes de Mello Affonso, Paulo Roberto |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Univ Estadual Sudoeste Bahia Universidade Estadual Paulista (Unesp) Univ Fed Para |
dc.contributor.author.fl_str_mv |
Barreto, Silvia Britto Nunes, Lorena Andrade Silva, Andre Teixeira da [UNESP] Juca-Chagas, Ricardo Diniz, Debora Sampaio, Iracilda Schneider, Horacio Antunes de Mello Affonso, Paulo Roberto |
dc.subject.por.fl_str_mv |
COI DNA barcoding ichthyofauna geometric morphometrics species delimitation |
topic |
COI DNA barcoding ichthyofauna geometric morphometrics species delimitation |
description |
The combination of DNA barcodes and geometric morphometrics is useful to discriminate taxonomically controversial species, providing more precise estimates of biodiversity. Therefore, our goal was to assess the genetic and morphometric diversity in Nematocharax, a controversial monotypic and sexually dimorphic genus of Neotropical fish, based on sequencing of cytochrome c oxidase subunit I (COI) and morphometric analyses in seven populations of N. venustus from coastal rivers in Brazil. The average pairwise intrapopulation divergence in COI ranged from 0 to 2.2%, while the average pairwise interpopulation divergence varied from 0 to 7.5%. The neighbour-joining (NJ) tree resulted in five genetic groups (bootstrap >= 97%), which correspond to the five clusters delimited by the BIN System, GMYC, and bPTP, indicating that there might be at least five species (or OTUs) within Nematocharax. Morphometric differences among these genetic lineages were also identified. Apparently, sexual selection, restricted dispersal, and geographic isolation might have acted synergistically to cause the evolutionary split of populations. These data challenge the current view that Nematocharax is a monotypic genus inasmuch as evolutionarily significant units or even distinguished species were identified. Therefore, we recommend that the highly impacted coastal basins in northeastern Brazil should be prioritized in conservation plans. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-10-01 2018-11-26T15:31:34Z 2018-11-26T15:31:34Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1139/gen-2015-0166 Genome. Ottawa: Canadian Science Publishing, Nrc Research Press, v. 59, n. 10, p. 851-865, 2016. 0831-2796 http://hdl.handle.net/11449/159143 10.1139/gen-2015-0166 WOS:000385852100007 WOS000385852100007.pdf |
url |
http://dx.doi.org/10.1139/gen-2015-0166 http://hdl.handle.net/11449/159143 |
identifier_str_mv |
Genome. Ottawa: Canadian Science Publishing, Nrc Research Press, v. 59, n. 10, p. 851-865, 2016. 0831-2796 10.1139/gen-2015-0166 WOS:000385852100007 WOS000385852100007.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genome 0,655 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
851-865 application/pdf |
dc.publisher.none.fl_str_mv |
Canadian Science Publishing, Nrc Research Press |
publisher.none.fl_str_mv |
Canadian Science Publishing, Nrc Research Press |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128749504299008 |