Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution
Tuco-tucos (small subterranean rodents of the genus Ctenomys) that inhabit sandy soils of the area under the influence of the second largest wetland of South America, in Northeastern Argentina (Corrientes province), are a complex of species and forms whose taxonomic status were not defined, nor are...
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todo:paper_00166707_v140_n4-6_p125_Caraballo2023-10-03T14:14:19Z Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution Caraballo, D.A. Abruzzese, G.A. Rossi, M.S. Chromosomal evolution Ctenomys Cytochrome b Cytochrome oxidase I D-loop Mitochondrial phylogeny cytochrome b cytochrome c oxidase mitochondrial DNA animal Argentina article chromosome classification genetic variability genetics molecular evolution molecular genetics nucleotide sequence phylogeny phylogeography rodent wetland Animals Argentina Chromosomes, Mammalian Cytochromes b DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Genetic Variation Molecular Sequence Data Phylogeny Phylogeography Rodentia Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Rodentia Tuco-tucos (small subterranean rodents of the genus Ctenomys) that inhabit sandy soils of the area under the influence of the second largest wetland of South America, in Northeastern Argentina (Corrientes province), are a complex of species and forms whose taxonomic status were not defined, nor are the evolutionary relationships among them. The tuco-tuco populations of this area exhibit one of the most ample grades of chromosomal variability within the genus. In order to analyze evolutionary relationships within the Corrientes group and its chromosomal variability, we completed the missing karyotypic information and performed a phylogenetic analysis. We obtained partial sequences of three mitochondrial markers: D-loop, cytochrome b and cytochrome oxidase I. The Corrientes group was monophyletic and split into three main clades that grouped related karyomorphs. The phylogeny suggested an ancestral condition of the karyomorph with diploid number (2n) 70 and fundamental number (FN) 84 that has evolved mainly via reductions of the FN although amplifications occurred in certain lineages. We discuss the relationship between patterns of chromosomal variability and species and groups boundaries. From the three main clades the one named iberá exhibited a remarkable karyotypic homogeneity, and could be considered as an independent and cohesive evolutionary lineage. On the contrary, the former recognized species C. dorbignyi is a polyphyletic lineage and hence its systematic classification should be reviewed. © 2012 Springer Science+Business Media B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00166707_v140_n4-6_p125_Caraballo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Chromosomal evolution Ctenomys Cytochrome b Cytochrome oxidase I D-loop Mitochondrial phylogeny cytochrome b cytochrome c oxidase mitochondrial DNA animal Argentina article chromosome classification genetic variability genetics molecular evolution molecular genetics nucleotide sequence phylogeny phylogeography rodent wetland Animals Argentina Chromosomes, Mammalian Cytochromes b DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Genetic Variation Molecular Sequence Data Phylogeny Phylogeography Rodentia Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Rodentia |
| spellingShingle |
Chromosomal evolution Ctenomys Cytochrome b Cytochrome oxidase I D-loop Mitochondrial phylogeny cytochrome b cytochrome c oxidase mitochondrial DNA animal Argentina article chromosome classification genetic variability genetics molecular evolution molecular genetics nucleotide sequence phylogeny phylogeography rodent wetland Animals Argentina Chromosomes, Mammalian Cytochromes b DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Genetic Variation Molecular Sequence Data Phylogeny Phylogeography Rodentia Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Rodentia Caraballo, D.A. Abruzzese, G.A. Rossi, M.S. Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution |
| topic_facet |
Chromosomal evolution Ctenomys Cytochrome b Cytochrome oxidase I D-loop Mitochondrial phylogeny cytochrome b cytochrome c oxidase mitochondrial DNA animal Argentina article chromosome classification genetic variability genetics molecular evolution molecular genetics nucleotide sequence phylogeny phylogeography rodent wetland Animals Argentina Chromosomes, Mammalian Cytochromes b DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Genetic Variation Molecular Sequence Data Phylogeny Phylogeography Rodentia Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Rodentia |
| description |
Tuco-tucos (small subterranean rodents of the genus Ctenomys) that inhabit sandy soils of the area under the influence of the second largest wetland of South America, in Northeastern Argentina (Corrientes province), are a complex of species and forms whose taxonomic status were not defined, nor are the evolutionary relationships among them. The tuco-tuco populations of this area exhibit one of the most ample grades of chromosomal variability within the genus. In order to analyze evolutionary relationships within the Corrientes group and its chromosomal variability, we completed the missing karyotypic information and performed a phylogenetic analysis. We obtained partial sequences of three mitochondrial markers: D-loop, cytochrome b and cytochrome oxidase I. The Corrientes group was monophyletic and split into three main clades that grouped related karyomorphs. The phylogeny suggested an ancestral condition of the karyomorph with diploid number (2n) 70 and fundamental number (FN) 84 that has evolved mainly via reductions of the FN although amplifications occurred in certain lineages. We discuss the relationship between patterns of chromosomal variability and species and groups boundaries. From the three main clades the one named iberá exhibited a remarkable karyotypic homogeneity, and could be considered as an independent and cohesive evolutionary lineage. On the contrary, the former recognized species C. dorbignyi is a polyphyletic lineage and hence its systematic classification should be reviewed. © 2012 Springer Science+Business Media B.V. |
| format |
JOUR |
| author |
Caraballo, D.A. Abruzzese, G.A. Rossi, M.S. |
| author_facet |
Caraballo, D.A. Abruzzese, G.A. Rossi, M.S. |
| author_sort |
Caraballo, D.A. |
| title |
Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution |
| title_short |
Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution |
| title_full |
Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution |
| title_fullStr |
Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution |
| title_full_unstemmed |
Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: Mitochondrial phylogeny and chromosomal evolution |
| title_sort |
diversity of tuco-tucos (ctenomys, rodentia) in the northeastern wetlands from argentina: mitochondrial phylogeny and chromosomal evolution |
| url |
http://hdl.handle.net/20.500.12110/paper_00166707_v140_n4-6_p125_Caraballo |
| work_keys_str_mv |
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| _version_ |
1782024628719321088 |