Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)

Detalhes bibliográficos
Autor(a) principal: Colihueque,Nelson
Data de Publicação: 2006
Outros Autores: Corrales,Olga, Parraguez,Margarita
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Genetics and Molecular Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200014
Resumo: Cytogenetic analysis of Trichomycterus areolatus, collected from the Tijeral and Huilma Rivers in southern Chile has shown a diploid chromosome number of 2n = 54, a fundamental number of FN = 106, and a karyotypic formula of 44m + 8sm + 2st. Intra-individual polymorphism of chromosome number (2n = 54, 55 and 56) in specimens from the Huilma River has also been documented, providing further evidence of the occurrence of this phenomenon in Trichomycterus. The karyotype exhibited large chromosome pairs: metacentric pairs 1 (relative length 7.54%), 2 (5.75%) and 3 (5.09%), submetacentric pair 23 (5.25%), and subtelocentic pair 27 (5.28%). Nuclear DNA content analysis showed an average value of 5.04 ± 1.09 pg/nucleus. This DNA content is higher than the mean value described for other species in this genus.
id SBG-1_62711396d48bc666fffa080d9a3e8761
oai_identifier_str oai:scielo:S1415-47572006000200014
network_acronym_str SBG-1
network_name_str Genetics and Molecular Biology
repository_id_str
spelling Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)karyotypenuclear DNA contentTrichomycterusSiluriformesCytogenetic analysis of Trichomycterus areolatus, collected from the Tijeral and Huilma Rivers in southern Chile has shown a diploid chromosome number of 2n = 54, a fundamental number of FN = 106, and a karyotypic formula of 44m + 8sm + 2st. Intra-individual polymorphism of chromosome number (2n = 54, 55 and 56) in specimens from the Huilma River has also been documented, providing further evidence of the occurrence of this phenomenon in Trichomycterus. The karyotype exhibited large chromosome pairs: metacentric pairs 1 (relative length 7.54%), 2 (5.75%) and 3 (5.09%), submetacentric pair 23 (5.25%), and subtelocentic pair 27 (5.28%). Nuclear DNA content analysis showed an average value of 5.04 ± 1.09 pg/nucleus. This DNA content is higher than the mean value described for other species in this genus.Sociedade Brasileira de Genética2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200014Genetics and Molecular Biology v.29 n.2 2006reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572006000200014info:eu-repo/semantics/openAccessColihueque,NelsonCorrales,OlgaParraguez,Margaritaeng2006-06-12T00:00:00Zoai:scielo:S1415-47572006000200014Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2006-06-12T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
title Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
spellingShingle Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
Colihueque,Nelson
karyotype
nuclear DNA content
Trichomycterus
Siluriformes
title_short Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
title_full Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
title_fullStr Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
title_full_unstemmed Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
title_sort Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
author Colihueque,Nelson
author_facet Colihueque,Nelson
Corrales,Olga
Parraguez,Margarita
author_role author
author2 Corrales,Olga
Parraguez,Margarita
author2_role author
author
dc.contributor.author.fl_str_mv Colihueque,Nelson
Corrales,Olga
Parraguez,Margarita
dc.subject.por.fl_str_mv karyotype
nuclear DNA content
Trichomycterus
Siluriformes
topic karyotype
nuclear DNA content
Trichomycterus
Siluriformes
description Cytogenetic analysis of Trichomycterus areolatus, collected from the Tijeral and Huilma Rivers in southern Chile has shown a diploid chromosome number of 2n = 54, a fundamental number of FN = 106, and a karyotypic formula of 44m + 8sm + 2st. Intra-individual polymorphism of chromosome number (2n = 54, 55 and 56) in specimens from the Huilma River has also been documented, providing further evidence of the occurrence of this phenomenon in Trichomycterus. The karyotype exhibited large chromosome pairs: metacentric pairs 1 (relative length 7.54%), 2 (5.75%) and 3 (5.09%), submetacentric pair 23 (5.25%), and subtelocentic pair 27 (5.28%). Nuclear DNA content analysis showed an average value of 5.04 ± 1.09 pg/nucleus. This DNA content is higher than the mean value described for other species in this genus.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1415-47572006000200014
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Genética
publisher.none.fl_str_mv Sociedade Brasileira de Genética
dc.source.none.fl_str_mv Genetics and Molecular Biology v.29 n.2 2006
reponame:Genetics and Molecular Biology
instname:Sociedade Brasileira de Genética (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Genética (SBG)
instacron_str SBG
institution SBG
reponame_str Genetics and Molecular Biology
collection Genetics and Molecular Biology
repository.name.fl_str_mv Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)
repository.mail.fl_str_mv ||editor@gmb.org.br
_version_ 1752122379912347648

Registros relacionados