A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil
In this work we present a new karyotype for Rhipidomys Tschudi, 1845 (Cricetidae, Rodentia) from Brazil. Our chromosome analyses included GTG- and CBG-banding patterns, the localization of the nucleolus organizer regions after silver staining (Ag-NORs) and fluorescence in situ hybridization (FISH) w...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2012-07-01
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| Series: | Comparative Cytogenetics |
| Online Access: | http://compcytogen.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1766 |
| _version_ | 1828969471824363520 |
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| author | Ana Heloisa Carvalho Maria Olimpia Lopes Marta Svartman |
| author_facet | Ana Heloisa Carvalho Maria Olimpia Lopes Marta Svartman |
| author_sort | Ana Heloisa Carvalho |
| collection | DOAJ |
| description | In this work we present a new karyotype for Rhipidomys Tschudi, 1845 (Cricetidae, Rodentia) from Brazil. Our chromosome analyses included GTG- and CBG-banding patterns, the localization of the nucleolus organizer regions after silver staining (Ag-NORs) and fluorescence in situ hybridization (FISH) with a telomere probe. The new karyotype is composed of 44 chromosomes and has a fundamental number (number of autosomal arms) of 48. Most Rhipidomys species already karyotyped presented similar complements with 2n=44, but their fundamental numbers varied from FN=46 to 80, a variation that has been mainly attributed to pericentric inversions. The comparison of this new karyotype to those of other Rhipidomys already reported allowed us to conclude that it is a distinctive chromosome complement, which can be of great use as a tool for the very complicated taxonomic identification in this genus. |
| first_indexed | 2024-12-14T12:32:24Z |
| format | Article |
| id | doaj.art-eb8f9cea768d4b0c9008d4755a7c56e9 |
| institution | Directory Open Access Journal |
| issn | 1993-0771 1993-078X |
| language | English |
| last_indexed | 2024-12-14T12:32:24Z |
| publishDate | 2012-07-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Comparative Cytogenetics |
| spelling | doaj.art-eb8f9cea768d4b0c9008d4755a7c56e92022-12-21T23:01:10ZengPensoft PublishersComparative Cytogenetics1993-07711993-078X2012-07-016322723710.3897/compcytogen.v6i3.24321766A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern BrazilAna Heloisa CarvalhoMaria Olimpia LopesMarta SvartmanIn this work we present a new karyotype for Rhipidomys Tschudi, 1845 (Cricetidae, Rodentia) from Brazil. Our chromosome analyses included GTG- and CBG-banding patterns, the localization of the nucleolus organizer regions after silver staining (Ag-NORs) and fluorescence in situ hybridization (FISH) with a telomere probe. The new karyotype is composed of 44 chromosomes and has a fundamental number (number of autosomal arms) of 48. Most Rhipidomys species already karyotyped presented similar complements with 2n=44, but their fundamental numbers varied from FN=46 to 80, a variation that has been mainly attributed to pericentric inversions. The comparison of this new karyotype to those of other Rhipidomys already reported allowed us to conclude that it is a distinctive chromosome complement, which can be of great use as a tool for the very complicated taxonomic identification in this genus.http://compcytogen.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1766 |
| spellingShingle | Ana Heloisa Carvalho Maria Olimpia Lopes Marta Svartman A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil Comparative Cytogenetics |
| title | A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil |
| title_full | A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil |
| title_fullStr | A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil |
| title_full_unstemmed | A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil |
| title_short | A new karyotype for Rhipidomys (Rodentia, Cricetidae) from Southeastern Brazil |
| title_sort | new karyotype for rhipidomys rodentia cricetidae from southeastern brazil |
| url | http://compcytogen.pensoft.net/lib/ajax_srv/article_elements_srv.php?action=download_pdf&item_id=1766 |
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