New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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=S1415-47572020000500201 |
Resumo: | Abstract We present new karyotype records for six Proechimys species from the Brazilian Amazon. P. echinothrix from the region of Purus River had 2n = 32 chromosomes and a FN = 58, while P. cuvieri from the region of the Japurá River presented 2n = 28 and FN = 46. All individuals presented hybridization with an 18S rDNA probe in a single chromosome pair, with the exception of P. cuvieri from the Japurá region, which presented a third signal in one of the homologs of pair 1. No ITS were found in any of the individuals. Our data supports the hypothesis that the P. cuvieri population from the Japurá Basin and P. echinothrix from the lower Purus are new taxonomic entities. Our data expand the geographic distribution of the cytotype (2n = 40, FN = 54) described for P. gardneri from the Madeira River, and the cytotype (2n = 46, FN = 50), described for P. guyannensis, as well as the recently-described cytotype of P. goeldii (2n = 16, FN = 14). No clear pattern of chromosomal evolution has yet been defined in Proechimys, despite the considerable karyotypic diversity of the genus. |
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New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian AmazoniaSpiny ratsrainforestFISH18S rDNAchromosome rearrangementsAbstract We present new karyotype records for six Proechimys species from the Brazilian Amazon. P. echinothrix from the region of Purus River had 2n = 32 chromosomes and a FN = 58, while P. cuvieri from the region of the Japurá River presented 2n = 28 and FN = 46. All individuals presented hybridization with an 18S rDNA probe in a single chromosome pair, with the exception of P. cuvieri from the Japurá region, which presented a third signal in one of the homologs of pair 1. No ITS were found in any of the individuals. Our data supports the hypothesis that the P. cuvieri population from the Japurá Basin and P. echinothrix from the lower Purus are new taxonomic entities. Our data expand the geographic distribution of the cytotype (2n = 40, FN = 54) described for P. gardneri from the Madeira River, and the cytotype (2n = 46, FN = 50), described for P. guyannensis, as well as the recently-described cytotype of P. goeldii (2n = 16, FN = 14). No clear pattern of chromosomal evolution has yet been defined in Proechimys, despite the considerable karyotypic diversity of the genus.Sociedade Brasileira de Genética2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000500201Genetics and Molecular Biology v.43 n.3 2020reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/1678-4685-gmb-2019-0093info:eu-repo/semantics/openAccessEler,Eduardo SchmidtSilva,Carlos Eduardo Faresin eSilva,Maria Nazareth Ferreira daFeldberg,Elianaeng2020-05-29T00:00:00Zoai:scielo:S1415-47572020000500201Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2020-05-29T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
title |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
spellingShingle |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia Eler,Eduardo Schmidt Spiny rats rainforest FISH 18S rDNA chromosome rearrangements |
title_short |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
title_full |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
title_fullStr |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
title_full_unstemmed |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
title_sort |
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia |
author |
Eler,Eduardo Schmidt |
author_facet |
Eler,Eduardo Schmidt Silva,Carlos Eduardo Faresin e Silva,Maria Nazareth Ferreira da Feldberg,Eliana |
author_role |
author |
author2 |
Silva,Carlos Eduardo Faresin e Silva,Maria Nazareth Ferreira da Feldberg,Eliana |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Eler,Eduardo Schmidt Silva,Carlos Eduardo Faresin e Silva,Maria Nazareth Ferreira da Feldberg,Eliana |
dc.subject.por.fl_str_mv |
Spiny rats rainforest FISH 18S rDNA chromosome rearrangements |
topic |
Spiny rats rainforest FISH 18S rDNA chromosome rearrangements |
description |
Abstract We present new karyotype records for six Proechimys species from the Brazilian Amazon. P. echinothrix from the region of Purus River had 2n = 32 chromosomes and a FN = 58, while P. cuvieri from the region of the Japurá River presented 2n = 28 and FN = 46. All individuals presented hybridization with an 18S rDNA probe in a single chromosome pair, with the exception of P. cuvieri from the Japurá region, which presented a third signal in one of the homologs of pair 1. No ITS were found in any of the individuals. Our data supports the hypothesis that the P. cuvieri population from the Japurá Basin and P. echinothrix from the lower Purus are new taxonomic entities. Our data expand the geographic distribution of the cytotype (2n = 40, FN = 54) described for P. gardneri from the Madeira River, and the cytotype (2n = 46, FN = 50), described for P. guyannensis, as well as the recently-described cytotype of P. goeldii (2n = 16, FN = 14). No clear pattern of chromosomal evolution has yet been defined in Proechimys, despite the considerable karyotypic diversity of the genus. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
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=S1415-47572020000500201 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000500201 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4685-gmb-2019-0093 |
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.43 n.3 2020 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_ |
1752122390083534848 |