Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil

Detalhes bibliográficos
Autor(a) principal: Silva, Gabriel S. C. [UNESP]
Data de Publicação: 2014
Outros Autores: Roxo, Fabio F. [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.442.7870
http://hdl.handle.net/11449/117536
Resumo: A new species of Hisonotus is described from the headwaters of the rio Xingu. The new species is distinguished from its congeners by having a functional V-shaped spinelet, odontodes not forming longitudinal aligned rows on the head and trunk, lower counts of the lateral and median series of abdominal plates, presence of a single rostral plate at the tip of the snout, absence of the unpaired platelets at typical adipose fin position, yellowish-tipped teeth, absence of conspicuous dark saddles and stripe on the body and higher number of teeth on the premaxillary and dentary. The new species, Hisonotus acuen, is restricted to headwaters of the rio Xingu basin, and is the first species of the genus Hisonotus described from the rio Xingu basin. Hisonotus acuen is highly variable in aspects of external body proportions, including body depth, snout length, and abdomen length. This variation is partly distributed within and among populations, and is not strongly correlated with body size. PCA of 83 adult specimens from six allopatric populations indicates the presence of continuous variation. Therefore, the available morphological data suggest that the individuals inhabiting the six localities of rio Xingu represent different populations of a single species. Low intraspecific variation in mitochondrial Cytochrome oxidase subunit I (COI) provides corroborative evidence.
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spelling Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, BrazilBiodiversityCascudinhosFresh-waterNeotropical fishTaxonomyA new species of Hisonotus is described from the headwaters of the rio Xingu. The new species is distinguished from its congeners by having a functional V-shaped spinelet, odontodes not forming longitudinal aligned rows on the head and trunk, lower counts of the lateral and median series of abdominal plates, presence of a single rostral plate at the tip of the snout, absence of the unpaired platelets at typical adipose fin position, yellowish-tipped teeth, absence of conspicuous dark saddles and stripe on the body and higher number of teeth on the premaxillary and dentary. The new species, Hisonotus acuen, is restricted to headwaters of the rio Xingu basin, and is the first species of the genus Hisonotus described from the rio Xingu basin. Hisonotus acuen is highly variable in aspects of external body proportions, including body depth, snout length, and abdomen length. This variation is partly distributed within and among populations, and is not strongly correlated with body size. PCA of 83 adult specimens from six allopatric populations indicates the presence of continuous variation. Therefore, the available morphological data suggest that the individuals inhabiting the six localities of rio Xingu represent different populations of a single species. Low intraspecific variation in mitochondrial Cytochrome oxidase subunit I (COI) provides corroborative evidence.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Estadual Paulista, Dept Morfol, Lab Biol & Genet Peixes, Botucatu, SP, BrazilUniv Estadual Paulista, Dept Morfol, Lab Biol & Genet Peixes, Botucatu, SP, BrazilFAPESP: 10/01610-9FAPESP: 12/01622-2Pensoft PublUniversidade Estadual Paulista (Unesp)Silva, Gabriel S. C. [UNESP]Roxo, Fabio F. [UNESP]Oliveira, Claudio [UNESP]2015-03-18T15:56:24Z2015-03-18T15:56:24Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article105-125application/pdfhttp://dx.doi.org/10.3897/zookeys.442.7870Zookeys. Sofia: Pensoft Publ, n. 442, p. 105-125, 2014.1313-2989http://hdl.handle.net/11449/11753610.3897/zookeys.442.7871WOS:000342131300007WOS000342131300007.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengZookeys1.0790,533info:eu-repo/semantics/openAccess2023-10-02T06:06:42Zoai:repositorio.unesp.br:11449/117536Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:47:32.619517Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
title Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
spellingShingle Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
Silva, Gabriel S. C. [UNESP]
Biodiversity
Cascudinhos
Fresh-water
Neotropical fish
Taxonomy
title_short Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
title_full Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
title_fullStr Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
title_full_unstemmed Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
title_sort Hisonotus acuen, a new and phenotypically variable cascudinho (Siluriformes, Loricariidae, Hypoptopomatinae) from the upper rio Xingu basin, Brazil
author Silva, Gabriel S. C. [UNESP]
author_facet Silva, Gabriel S. C. [UNESP]
Roxo, Fabio F. [UNESP]
Oliveira, Claudio [UNESP]
author_role author
author2 Roxo, Fabio F. [UNESP]
Oliveira, Claudio [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Silva, Gabriel S. C. [UNESP]
Roxo, Fabio F. [UNESP]
Oliveira, Claudio [UNESP]
dc.subject.por.fl_str_mv Biodiversity
Cascudinhos
Fresh-water
Neotropical fish
Taxonomy
topic Biodiversity
Cascudinhos
Fresh-water
Neotropical fish
Taxonomy
description A new species of Hisonotus is described from the headwaters of the rio Xingu. The new species is distinguished from its congeners by having a functional V-shaped spinelet, odontodes not forming longitudinal aligned rows on the head and trunk, lower counts of the lateral and median series of abdominal plates, presence of a single rostral plate at the tip of the snout, absence of the unpaired platelets at typical adipose fin position, yellowish-tipped teeth, absence of conspicuous dark saddles and stripe on the body and higher number of teeth on the premaxillary and dentary. The new species, Hisonotus acuen, is restricted to headwaters of the rio Xingu basin, and is the first species of the genus Hisonotus described from the rio Xingu basin. Hisonotus acuen is highly variable in aspects of external body proportions, including body depth, snout length, and abdomen length. This variation is partly distributed within and among populations, and is not strongly correlated with body size. PCA of 83 adult specimens from six allopatric populations indicates the presence of continuous variation. Therefore, the available morphological data suggest that the individuals inhabiting the six localities of rio Xingu represent different populations of a single species. Low intraspecific variation in mitochondrial Cytochrome oxidase subunit I (COI) provides corroborative evidence.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
2015-03-18T15:56:24Z
2015-03-18T15:56:24Z
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.442.7870
Zookeys. Sofia: Pensoft Publ, n. 442, p. 105-125, 2014.
1313-2989
http://hdl.handle.net/11449/117536
10.3897/zookeys.442.7871
WOS:000342131300007
WOS000342131300007.pdf
url http://dx.doi.org/10.3897/zookeys.442.7870
http://hdl.handle.net/11449/117536
identifier_str_mv Zookeys. Sofia: Pensoft Publ, n. 442, p. 105-125, 2014.
1313-2989
10.3897/zookeys.442.7871
WOS:000342131300007
WOS000342131300007.pdf
dc.language.iso.fl_str_mv eng
language eng
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv 105-125
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)
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