Cargando…
New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia
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...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Sociedade Brasileira de Genética
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7265155/ https://www.ncbi.nlm.nih.gov/pubmed/32484848 http://dx.doi.org/10.1590/1678-4685-GMB-2019-0093 |
_version_ | 1783541076112441344 |
---|---|
author | Eler, Eduardo Schmidt Silva, Carlos Eduardo Faresin e da Silva, Maria Nazareth Ferreira Feldberg, Eliana |
author_facet | Eler, Eduardo Schmidt Silva, Carlos Eduardo Faresin e da Silva, Maria Nazareth Ferreira Feldberg, Eliana |
author_sort | Eler, Eduardo Schmidt |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-7265155 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Sociedade Brasileira de Genética |
record_format | MEDLINE/PubMed |
spelling | pubmed-72651552020-06-10 New karyotype records for the genus Proechimys (Rodentia: Echimyidae) from Brazilian Amazonia Eler, Eduardo Schmidt Silva, Carlos Eduardo Faresin e da Silva, Maria Nazareth Ferreira Feldberg, Eliana Genet Mol Biol Animal Genetics 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 Genética 2020-06-01 /pmc/articles/PMC7265155/ /pubmed/32484848 http://dx.doi.org/10.1590/1678-4685-GMB-2019-0093 Text en Copyright © 2020, Sociedade Brasileira de Genética. https://creativecommons.org/licenses/by/4.0/ License information: This is an open-access article distributed under the terms of the Creative Commons Attribution License (type CC-BY), which permits unrestricted use, distribution and reproduction in any medium, provided the original article is properly cited. |
spellingShingle | Animal Genetics Eler, Eduardo Schmidt Silva, Carlos Eduardo Faresin e da Silva, Maria Nazareth Ferreira Feldberg, Eliana 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 |
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_short | 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 |
topic | Animal Genetics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7265155/ https://www.ncbi.nlm.nih.gov/pubmed/32484848 http://dx.doi.org/10.1590/1678-4685-GMB-2019-0093 |
work_keys_str_mv | AT elereduardoschmidt newkaryotyperecordsforthegenusproechimysrodentiaechimyidaefrombrazilianamazonia AT silvacarloseduardofaresine newkaryotyperecordsforthegenusproechimysrodentiaechimyidaefrombrazilianamazonia AT dasilvamarianazarethferreira newkaryotyperecordsforthegenusproechimysrodentiaechimyidaefrombrazilianamazonia AT feldbergeliana newkaryotyperecordsforthegenusproechimysrodentiaechimyidaefrombrazilianamazonia |