New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes

Detalhes bibliográficos
Autor(a) principal: Costa e Silva, Gabriel de Souza da [UNESP]
Data de Publicação: 2014
Outros Autores: Roxo, Fabio Fernandes [UNESP], Britzke, Ricardo [UNESP], Oliveira, Claudio [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3897/zookeys.406.7011
http://hdl.handle.net/11449/112655
Resumo: A new species of Pseudancistrus is described from the Tapajos Basin, and assigned to the P. barbatus group by having hypertrophied odontodes along the snout and lacking evertible cheek plates. The new species is distinguished from other species in that group (P. barbatus, P. corantijniensis, P. depressus and P. nigrescens) by its pattern of spots, length and color of snout odontodes, greater head depth, cleithral width, anal-fin spine length, peduncle depth and internares width. Molecular phylogenetic results corroborate placement of the new species in the Pseudancistrus barbatus group which is otherwise distributed in the Xingu Basin and rivers draining the Guyana Shield into the Atlantic Ocean. Topology tests strongly reject alternative hypotheses supporting close relationships with Guyanancistrus, Lithoxancistrus or the species Pseudancistrus pectegenitor, P. sidereus and P. genisetiger. Additionally, we propose two hypotheses on the distribution of the new species in the rio Tapajos, a Brazilian Shield drainage. The first one proposes that ancestral stock of the P. barbatus group was widely distributed throughout rivers draining the Guyana and Brazilian shields, and the species P. zawadzkii and Pseudancistrus sp. L17 are in the limit of the distribution for the group in Tapajos and Xingu rivers. The second hypothesis proposes that ancestral stock of the P. barbatus group was restricted to Guyana Shield rivers, and that headwater capture events permitted several dispersal routs through Guyana and Amazon rivers, permitted that the ancestral lineages of Pseudancistrus sp. L17 and P. zawadzkii reached the rivers of Amazon basin.
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spelling New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routesAncistrinifreshwatermolecular phylogenyF-reticulon 4Brazilian ShieldA new species of Pseudancistrus is described from the Tapajos Basin, and assigned to the P. barbatus group by having hypertrophied odontodes along the snout and lacking evertible cheek plates. The new species is distinguished from other species in that group (P. barbatus, P. corantijniensis, P. depressus and P. nigrescens) by its pattern of spots, length and color of snout odontodes, greater head depth, cleithral width, anal-fin spine length, peduncle depth and internares width. Molecular phylogenetic results corroborate placement of the new species in the Pseudancistrus barbatus group which is otherwise distributed in the Xingu Basin and rivers draining the Guyana Shield into the Atlantic Ocean. Topology tests strongly reject alternative hypotheses supporting close relationships with Guyanancistrus, Lithoxancistrus or the species Pseudancistrus pectegenitor, P. sidereus and P. genisetiger. Additionally, we propose two hypotheses on the distribution of the new species in the rio Tapajos, a Brazilian Shield drainage. The first one proposes that ancestral stock of the P. barbatus group was widely distributed throughout rivers draining the Guyana and Brazilian shields, and the species P. zawadzkii and Pseudancistrus sp. L17 are in the limit of the distribution for the group in Tapajos and Xingu rivers. The second hypothesis proposes that ancestral stock of the P. barbatus group was restricted to Guyana Shield rivers, and that headwater capture events permitted several dispersal routs through Guyana and Amazon rivers, permitted that the ancestral lineages of Pseudancistrus sp. L17 and P. zawadzkii reached the rivers of Amazon basin.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)U.S. National Science FoundationIB UNESP, Dept Morfol, Lab Biol & Genet Peixes, BR-18618000 Botucatu, SP, BrazilIB UNESP, Dept Morfol, Lab Biol & Genet Peixes, BR-18618000 Botucatu, SP, BrazilFAPESP: 10/01610-9FAPESP: 12/01622-2FAPESP: 11/00269-4U.S. National Science FoundationDEB-1257813Pensoft PublUniversidade Estadual Paulista (Unesp)Costa e Silva, Gabriel de Souza da [UNESP]Roxo, Fabio Fernandes [UNESP]Britzke, Ricardo [UNESP]Oliveira, Claudio [UNESP]2014-12-03T13:10:56Z2014-12-03T13:10:56Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-23application/pdfhttp://dx.doi.org/10.3897/zookeys.406.7011Zookeys. Sofia: Pensoft Publ, n. 406, p. 1-23, 2014.1313-2989http://hdl.handle.net/11449/11265510.3897/zookeys.406.7011WOS:000335390300001WOS000335390300001.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengZooKeys1.0790,533info:eu-repo/semantics/openAccess2024-01-01T06:22:39Zoai:repositorio.unesp.br:11449/112655Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:52:53.471464Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
title New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
spellingShingle New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
Costa e Silva, Gabriel de Souza da [UNESP]
Ancistrini
freshwater
molecular phylogeny
F-reticulon 4
Brazilian Shield
title_short New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
title_full New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
title_fullStr New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
title_full_unstemmed New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
title_sort New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes
author Costa e Silva, Gabriel de Souza da [UNESP]
author_facet Costa e Silva, Gabriel de Souza da [UNESP]
Roxo, Fabio Fernandes [UNESP]
Britzke, Ricardo [UNESP]
Oliveira, Claudio [UNESP]
author_role author
author2 Roxo, Fabio Fernandes [UNESP]
Britzke, Ricardo [UNESP]
Oliveira, Claudio [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Costa e Silva, Gabriel de Souza da [UNESP]
Roxo, Fabio Fernandes [UNESP]
Britzke, Ricardo [UNESP]
Oliveira, Claudio [UNESP]
dc.subject.por.fl_str_mv Ancistrini
freshwater
molecular phylogeny
F-reticulon 4
Brazilian Shield
topic Ancistrini
freshwater
molecular phylogeny
F-reticulon 4
Brazilian Shield
description A new species of Pseudancistrus is described from the Tapajos Basin, and assigned to the P. barbatus group by having hypertrophied odontodes along the snout and lacking evertible cheek plates. The new species is distinguished from other species in that group (P. barbatus, P. corantijniensis, P. depressus and P. nigrescens) by its pattern of spots, length and color of snout odontodes, greater head depth, cleithral width, anal-fin spine length, peduncle depth and internares width. Molecular phylogenetic results corroborate placement of the new species in the Pseudancistrus barbatus group which is otherwise distributed in the Xingu Basin and rivers draining the Guyana Shield into the Atlantic Ocean. Topology tests strongly reject alternative hypotheses supporting close relationships with Guyanancistrus, Lithoxancistrus or the species Pseudancistrus pectegenitor, P. sidereus and P. genisetiger. Additionally, we propose two hypotheses on the distribution of the new species in the rio Tapajos, a Brazilian Shield drainage. The first one proposes that ancestral stock of the P. barbatus group was widely distributed throughout rivers draining the Guyana and Brazilian shields, and the species P. zawadzkii and Pseudancistrus sp. L17 are in the limit of the distribution for the group in Tapajos and Xingu rivers. The second hypothesis proposes that ancestral stock of the P. barbatus group was restricted to Guyana Shield rivers, and that headwater capture events permitted several dispersal routs through Guyana and Amazon rivers, permitted that the ancestral lineages of Pseudancistrus sp. L17 and P. zawadzkii reached the rivers of Amazon basin.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-03T13:10:56Z
2014-12-03T13:10:56Z
2014-01-01
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/10.3897/zookeys.406.7011
Zookeys. Sofia: Pensoft Publ, n. 406, p. 1-23, 2014.
1313-2989
http://hdl.handle.net/11449/112655
10.3897/zookeys.406.7011
WOS:000335390300001
WOS000335390300001.pdf
url http://dx.doi.org/10.3897/zookeys.406.7011
http://hdl.handle.net/11449/112655
identifier_str_mv Zookeys. Sofia: Pensoft Publ, n. 406, p. 1-23, 2014.
1313-2989
10.3897/zookeys.406.7011
WOS:000335390300001
WOS000335390300001.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv ZooKeys
1.079
0,533
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-23
application/pdf
dc.publisher.none.fl_str_mv Pensoft Publ
publisher.none.fl_str_mv Pensoft Publ
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
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