Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species?
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1159/000488377 http://hdl.handle.net/11449/176181 |
Resumo: | Mazama gouazoubira is a small deer species widely distributed in South America. Previous studies have shown that this species presents intraspecific chromosomal polymorphisms, which could affect fertility due to the effects of chromosomal rearrangements on gamete formation. Important aspects regarding the karyotype evolution of this species and the genus remain undefined due to the lack of information concerning the causes of this chromosomal variation. Nineteen individuals belonging to the Mazama gouazoubira population located in the Pantanal were cytogenetically evaluated. Among the individuals analyzed, 9 had B chromosomes and 5 carried a heterozygous centric fusion (2n = 69 and FN = 70). In 3 individuals, the fusion occurred between chromosomes X and 16, in 1 individual between chromosomes 7 and 21, and in another individual between chromosomes 4 and 16. These striking polymorphisms could be explained by several hypotheses. One is that the chromosome rearrangements in this species are recent and not fixed in the population yet, and another hypothesis is that they represent a balanced polymorphism and that heterozygotes have an adaptive advantage. On the other hand, these polymorphisms may negatively influence fertility and raise questions about sustainability or reproductive isolation of the population. |
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Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species?B chromosomeCentric fusionG-bandingGray brocket deerMazama gouazoubira is a small deer species widely distributed in South America. Previous studies have shown that this species presents intraspecific chromosomal polymorphisms, which could affect fertility due to the effects of chromosomal rearrangements on gamete formation. Important aspects regarding the karyotype evolution of this species and the genus remain undefined due to the lack of information concerning the causes of this chromosomal variation. Nineteen individuals belonging to the Mazama gouazoubira population located in the Pantanal were cytogenetically evaluated. Among the individuals analyzed, 9 had B chromosomes and 5 carried a heterozygous centric fusion (2n = 69 and FN = 70). In 3 individuals, the fusion occurred between chromosomes X and 16, in 1 individual between chromosomes 7 and 21, and in another individual between chromosomes 4 and 16. These striking polymorphisms could be explained by several hypotheses. One is that the chromosome rearrangements in this species are recent and not fixed in the population yet, and another hypothesis is that they represent a balanced polymorphism and that heterozygotes have an adaptive advantage. On the other hand, these polymorphisms may negatively influence fertility and raise questions about sustainability or reproductive isolation of the population.Núcleo de Pesquisa e Conservacaõ de Cervídeos (NUPECCE) Departamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Zona RuralNúcleo de Pesquisa e Conservacaõ de Cervídeos (NUPECCE) Departamento de Zootecnia Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Zona RuralUniversidade Estadual Paulista (Unesp)Valeri, Mirela P. [UNESP]Tomazella, Iara M. [UNESP]Duarte, José M.B. [UNESP]2018-12-11T17:19:30Z2018-12-11T17:19:30Z2018-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article147-152application/pdfhttp://dx.doi.org/10.1159/000488377Cytogenetic and Genome Research, v. 154, n. 3, p. 147-152, 2018.1424-859X1424-8581http://hdl.handle.net/11449/17618110.1159/0004883772-s2.0-850453256102-s2.0-85045325610.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCytogenetic and Genome Research0,748info:eu-repo/semantics/openAccess2024-06-07T18:42:07Zoai:repositorio.unesp.br:11449/176181Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:34:08.691216Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
title |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
spellingShingle |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? Valeri, Mirela P. [UNESP] B chromosome Centric fusion G-banding Gray brocket deer |
title_short |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
title_full |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
title_fullStr |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
title_full_unstemmed |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
title_sort |
Intrapopulation chromosomal polymorphism in mazama gouazoubira (Cetartiodactyla; Cervidae): The emergence of a new species? |
author |
Valeri, Mirela P. [UNESP] |
author_facet |
Valeri, Mirela P. [UNESP] Tomazella, Iara M. [UNESP] Duarte, José M.B. [UNESP] |
author_role |
author |
author2 |
Tomazella, Iara M. [UNESP] Duarte, José M.B. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Valeri, Mirela P. [UNESP] Tomazella, Iara M. [UNESP] Duarte, José M.B. [UNESP] |
dc.subject.por.fl_str_mv |
B chromosome Centric fusion G-banding Gray brocket deer |
topic |
B chromosome Centric fusion G-banding Gray brocket deer |
description |
Mazama gouazoubira is a small deer species widely distributed in South America. Previous studies have shown that this species presents intraspecific chromosomal polymorphisms, which could affect fertility due to the effects of chromosomal rearrangements on gamete formation. Important aspects regarding the karyotype evolution of this species and the genus remain undefined due to the lack of information concerning the causes of this chromosomal variation. Nineteen individuals belonging to the Mazama gouazoubira population located in the Pantanal were cytogenetically evaluated. Among the individuals analyzed, 9 had B chromosomes and 5 carried a heterozygous centric fusion (2n = 69 and FN = 70). In 3 individuals, the fusion occurred between chromosomes X and 16, in 1 individual between chromosomes 7 and 21, and in another individual between chromosomes 4 and 16. These striking polymorphisms could be explained by several hypotheses. One is that the chromosome rearrangements in this species are recent and not fixed in the population yet, and another hypothesis is that they represent a balanced polymorphism and that heterozygotes have an adaptive advantage. On the other hand, these polymorphisms may negatively influence fertility and raise questions about sustainability or reproductive isolation of the population. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:19:30Z 2018-12-11T17:19:30Z 2018-05-01 |
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/10.1159/000488377 Cytogenetic and Genome Research, v. 154, n. 3, p. 147-152, 2018. 1424-859X 1424-8581 http://hdl.handle.net/11449/176181 10.1159/000488377 2-s2.0-85045325610 2-s2.0-85045325610.pdf |
url |
http://dx.doi.org/10.1159/000488377 http://hdl.handle.net/11449/176181 |
identifier_str_mv |
Cytogenetic and Genome Research, v. 154, n. 3, p. 147-152, 2018. 1424-859X 1424-8581 10.1159/000488377 2-s2.0-85045325610 2-s2.0-85045325610.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Cytogenetic and Genome Research 0,748 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
147-152 application/pdf |
dc.source.none.fl_str_mv |
Scopus 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_ |
1808128949413216256 |