| Revista: | Genetics and molecular biology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000459142 |
| ISSN: | 1415-4757 |
| Autors: | Fornel, Rodrigo1 Maestri, Renan2 Cordeiro Estrela, Pedro3 Sanfelice, Daniela4 Freitas, Thales Renato O. de5 |
| Institucions: | 1Universidade Regional Integrada do Alto Uruguai e das Missoes, Departamento de Ciencias Biologicas, Erechim, Rio Grande do Sul. Brasil 2Universidade Federal do Rio Grande do Sul, Departamento de Ecologia, Porto Alegre, Rio Grande do Sul. Brasil 3Universidade Federal da Paraíba, Departamento de Sistematica e Ecologia, Joao Pessoa, Paraiba. Brasil 4Instituto Federal de Educacao, Ciencia e Tecnologia do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul. Brasil 5Universidade Federal do Rio Grande do Sul, Departamento de Genetica, Porto Alegre, Rio Grande do Sul. Brasil |
| Any: | 2023 |
| Volum: | 46 |
| Número: | 3 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The relationship between chromosomal and morphological variation in mammals is poorly understood. We analyzed the cranial size and shape variation in Ctenomys lami concerning to the geographic variation in their chromosome numbers. This subterranean rodent occurs in a narrow range of sand-dunes in the Coastal Plain of southern Brazil. This species presents a high karyotypic variation with diploid numbers varying from 2n = 54 to 2n = 58, involving the fission and fusion of chromosome pairs 1 and 2. Due to different chromosome rearrangement frequencies along their geographic distribution, four karyotypic blocks were proposed. This study, explored cranium shape and size variation in geographical, chromosomal polymorphism, and chromosome rearrangements contexts to test whether the four karyotypic blocks reflect morphologically distinct units. For this, we measured 89 craniums using geometric morphometrics and used uni and multivariate statistics to discriminate the predicted groups and test for an association among chromosomal and morphological variation. Our results show the size and shape of sexual dimorphism, with males larger than females, and support the existence of four karyotypic blocks for Ctenomys lami based on morphological variation. However, our results do not support a direct relationship between chromosomal and cranial morphological variation in C. lami |
| Disciplines | Biología |
| Paraules clau: | Mamíferos, Genética, Rodentia, Ctenomys lami, Cráneo, Morfometría geométrica, Polimorfismo cromosómico, Rearreglo cromosómico |
| Keyword: | Mammals, Genetics, Rodentia, Ctenomys lami, Skull, Geometric morphometrics, Chromosomal polymorphism, Chromosome rearrangements |
| Text complet: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
