Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
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=S1415-47572009000200016 |
Resumo: | Juliomys is a small rodent from the family Cricetidae which inhabits the Atlantic forest and forests from Argentina to eastern Brazil. The three species recognized so far have different karyotypes. In this paper, we describe a new karyotype with 2n = 32, FN = 48 found in Juliomys specimens from a high-altitude area in the Atlantic forest of southern Brazil. The karyotype was analyzed after G- and C-banding and silver staining of the nucleolus organizer regions (Ag-NOR) and its G-banding patterns were compared with those of the newly described species Juliomys ossitenuis (2n = 20, FN = 36). The 2n = 32 karyomorph presented peculiar features and was very different from those of the other species of the genus: J. pictipes (2n = 36, FN = 34), J. rimofrons (2n = 20, FN = 34) and J. ossitenuis (2n = 20, FN = 36). Differences were mostly due to centric and tandem fusions, pericentric inversion and loss of heterochromatin. The karyotype represents a powerful tool to differentiate Juliomys species and our data suggest that the karyotype described herein belongs to a new species. |
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Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern BrazilJuliomyskaryotype evolutionJ. ossitenuiscomparative G-bandingAg-NORsJuliomys is a small rodent from the family Cricetidae which inhabits the Atlantic forest and forests from Argentina to eastern Brazil. The three species recognized so far have different karyotypes. In this paper, we describe a new karyotype with 2n = 32, FN = 48 found in Juliomys specimens from a high-altitude area in the Atlantic forest of southern Brazil. The karyotype was analyzed after G- and C-banding and silver staining of the nucleolus organizer regions (Ag-NOR) and its G-banding patterns were compared with those of the newly described species Juliomys ossitenuis (2n = 20, FN = 36). The 2n = 32 karyomorph presented peculiar features and was very different from those of the other species of the genus: J. pictipes (2n = 36, FN = 34), J. rimofrons (2n = 20, FN = 34) and J. ossitenuis (2n = 20, FN = 36). Differences were mostly due to centric and tandem fusions, pericentric inversion and loss of heterochromatin. The karyotype represents a powerful tool to differentiate Juliomys species and our data suggest that the karyotype described herein belongs to a new species.Sociedade Brasileira de Genética2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200016Genetics and Molecular Biology v.32 n.2 2009reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572009005000031info:eu-repo/semantics/openAccessParesque,RobertaChristoff,Alexandre UarthFagundes,Valériaeng2009-05-25T00:00:00Zoai:scielo:S1415-47572009000200016Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2009-05-25T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
title |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
spellingShingle |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil Paresque,Roberta Juliomys karyotype evolution J. ossitenuis comparative G-banding Ag-NORs |
title_short |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
title_full |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
title_fullStr |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
title_full_unstemmed |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
title_sort |
Karyology of the Atlantic forest rodent Juliomys (Cricetidae): a new karyotype from southern Brazil |
author |
Paresque,Roberta |
author_facet |
Paresque,Roberta Christoff,Alexandre Uarth Fagundes,Valéria |
author_role |
author |
author2 |
Christoff,Alexandre Uarth Fagundes,Valéria |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Paresque,Roberta Christoff,Alexandre Uarth Fagundes,Valéria |
dc.subject.por.fl_str_mv |
Juliomys karyotype evolution J. ossitenuis comparative G-banding Ag-NORs |
topic |
Juliomys karyotype evolution J. ossitenuis comparative G-banding Ag-NORs |
description |
Juliomys is a small rodent from the family Cricetidae which inhabits the Atlantic forest and forests from Argentina to eastern Brazil. The three species recognized so far have different karyotypes. In this paper, we describe a new karyotype with 2n = 32, FN = 48 found in Juliomys specimens from a high-altitude area in the Atlantic forest of southern Brazil. The karyotype was analyzed after G- and C-banding and silver staining of the nucleolus organizer regions (Ag-NOR) and its G-banding patterns were compared with those of the newly described species Juliomys ossitenuis (2n = 20, FN = 36). The 2n = 32 karyomorph presented peculiar features and was very different from those of the other species of the genus: J. pictipes (2n = 36, FN = 34), J. rimofrons (2n = 20, FN = 34) and J. ossitenuis (2n = 20, FN = 36). Differences were mostly due to centric and tandem fusions, pericentric inversion and loss of heterochromatin. The karyotype represents a powerful tool to differentiate Juliomys species and our data suggest that the karyotype described herein belongs to a new species. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 |
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=S1415-47572009000200016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47572009005000031 |
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.32 n.2 2009 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_ |
1752122382286323712 |