Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea

Detalhes bibliográficos
Autor(a) principal: Araujo, D.
Data de Publicação: 2015
Outros Autores: Paula-Neto, E. [UNESP], Brescovit, A. D., Cella, D. M., Schneider, M. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1080/11250003.2015.1078418
http://hdl.handle.net/11449/168147
Resumo: Nephilid systematics has been subject to several changes in the last years, and the use of non-classical characters could be useful for evolutionary considerations. In this study, we analyzed the mitotic chromosomes of two nephilid spiders, Nephila clavipes and Nephila sexpunctata, using standard staining, silver nitrate impregnation and C-banding techniques, aiming to discuss the chromosomal similarities of Nephilidae and Tetragnathidae, and chromosome evolution within Nephila and Nephilingis. The basic karyotype characteristics observed in these two species (2n♂ = 22 + X1X20 and monoarmed chromosomes) were similar to those registered for most araneoid families, i.e., Araneidae, Linyphiidae, Nephilidae, Nesticidae and Tetragnathidae. However, the occurrence of both prominent secondary constrictions and nucleolar organizer regions (NORs) is a shared characteristic between Nephilidae and Tetragnathidae, considering that these regions were not observed in any other Araneoidea species cytogenetically examined. Furthermore, in the present study we showed that within Nephila and Nephilingis species, change in the number and location of NORs as well as in the quantity and distribution of constitutive heterochromatin were the main events responsible for chromosome evolution, and that these differences can be useful in the cytotaxonomy of this group.
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spelling Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among AraneoideaChromosomeskaryotype evolutionnucleolar organizer regionOrbiculariaesecondary constrictionNephilid systematics has been subject to several changes in the last years, and the use of non-classical characters could be useful for evolutionary considerations. In this study, we analyzed the mitotic chromosomes of two nephilid spiders, Nephila clavipes and Nephila sexpunctata, using standard staining, silver nitrate impregnation and C-banding techniques, aiming to discuss the chromosomal similarities of Nephilidae and Tetragnathidae, and chromosome evolution within Nephila and Nephilingis. The basic karyotype characteristics observed in these two species (2n♂ = 22 + X1X20 and monoarmed chromosomes) were similar to those registered for most araneoid families, i.e., Araneidae, Linyphiidae, Nephilidae, Nesticidae and Tetragnathidae. However, the occurrence of both prominent secondary constrictions and nucleolar organizer regions (NORs) is a shared characteristic between Nephilidae and Tetragnathidae, considering that these regions were not observed in any other Araneoidea species cytogenetically examined. Furthermore, in the present study we showed that within Nephila and Nephilingis species, change in the number and location of NORs as well as in the quantity and distribution of constitutive heterochromatin were the main events responsible for chromosome evolution, and that these differences can be useful in the cytotaxonomy of this group.Universidade Federal de Mato Grosso do Sul UFMS Setor de Biologia Geral Centro de Ciências Biológicas e da Saúde Cidade Universitária Bairro UniversitárioDepartamento de Biologia Universidade Estadual Paulista UNESP Instituto de BiociênciasInstituto Butantan Laboratório Especial de Coleções ZoológicasUniversidade Federal de São Paulo UNIFESP Departamento de Ciências BiológicasDepartamento de Biologia Universidade Estadual Paulista UNESP Instituto de BiociênciasUniversidade Federal de Mato Grosso do Sul (UFMS)Universidade Estadual Paulista (Unesp)Laboratório Especial de Coleções ZoológicasUniversidade Federal de São Paulo (UNIFESP)Araujo, D.Paula-Neto, E. [UNESP]Brescovit, A. D.Cella, D. M.Schneider, M. C.2018-12-11T16:39:57Z2018-12-11T16:39:57Z2015-10-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article513-520application/pdfhttp://dx.doi.org/10.1080/11250003.2015.1078418Italian Journal of Zoology, v. 82, n. 4, p. 513-520, 2015.1748-58511125-0003http://hdl.handle.net/11449/16814710.1080/11250003.2015.10784182-s2.0-849471268902-s2.0-84947126890.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengItalian Journal of Zoologyinfo:eu-repo/semantics/openAccess2023-12-23T06:21:32Zoai:repositorio.unesp.br:11449/168147Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:06:46.226074Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
title Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
spellingShingle Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
Araujo, D.
Chromosomes
karyotype evolution
nucleolar organizer region
Orbiculariae
secondary constriction
title_short Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
title_full Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
title_fullStr Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
title_full_unstemmed Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
title_sort Chromosomal similarities between Nephilidae and Tetragnathidae indicate unique evolutionary traits among Araneoidea
author Araujo, D.
author_facet Araujo, D.
Paula-Neto, E. [UNESP]
Brescovit, A. D.
Cella, D. M.
Schneider, M. C.
author_role author
author2 Paula-Neto, E. [UNESP]
Brescovit, A. D.
Cella, D. M.
Schneider, M. C.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Mato Grosso do Sul (UFMS)
Universidade Estadual Paulista (Unesp)
Laboratório Especial de Coleções Zoológicas
Universidade Federal de São Paulo (UNIFESP)
dc.contributor.author.fl_str_mv Araujo, D.
Paula-Neto, E. [UNESP]
Brescovit, A. D.
Cella, D. M.
Schneider, M. C.
dc.subject.por.fl_str_mv Chromosomes
karyotype evolution
nucleolar organizer region
Orbiculariae
secondary constriction
topic Chromosomes
karyotype evolution
nucleolar organizer region
Orbiculariae
secondary constriction
description Nephilid systematics has been subject to several changes in the last years, and the use of non-classical characters could be useful for evolutionary considerations. In this study, we analyzed the mitotic chromosomes of two nephilid spiders, Nephila clavipes and Nephila sexpunctata, using standard staining, silver nitrate impregnation and C-banding techniques, aiming to discuss the chromosomal similarities of Nephilidae and Tetragnathidae, and chromosome evolution within Nephila and Nephilingis. The basic karyotype characteristics observed in these two species (2n♂ = 22 + X1X20 and monoarmed chromosomes) were similar to those registered for most araneoid families, i.e., Araneidae, Linyphiidae, Nephilidae, Nesticidae and Tetragnathidae. However, the occurrence of both prominent secondary constrictions and nucleolar organizer regions (NORs) is a shared characteristic between Nephilidae and Tetragnathidae, considering that these regions were not observed in any other Araneoidea species cytogenetically examined. Furthermore, in the present study we showed that within Nephila and Nephilingis species, change in the number and location of NORs as well as in the quantity and distribution of constitutive heterochromatin were the main events responsible for chromosome evolution, and that these differences can be useful in the cytotaxonomy of this group.
publishDate 2015
dc.date.none.fl_str_mv 2015-10-02
2018-12-11T16:39:57Z
2018-12-11T16:39:57Z
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/10.1080/11250003.2015.1078418
Italian Journal of Zoology, v. 82, n. 4, p. 513-520, 2015.
1748-5851
1125-0003
http://hdl.handle.net/11449/168147
10.1080/11250003.2015.1078418
2-s2.0-84947126890
2-s2.0-84947126890.pdf
url http://dx.doi.org/10.1080/11250003.2015.1078418
http://hdl.handle.net/11449/168147
identifier_str_mv Italian Journal of Zoology, v. 82, n. 4, p. 513-520, 2015.
1748-5851
1125-0003
10.1080/11250003.2015.1078418
2-s2.0-84947126890
2-s2.0-84947126890.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Italian Journal of Zoology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 513-520
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
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