Integrative lineage delimitation in rodents of the Ctenomys Corrientes group
The tuco-tucos rodents (genus Ctenomys) of the Corrientes group comprise several populations that inhabit the vast area under the influence of the Iberá wetland. Lineage delimitation within the recently diverged Corrientes group is a challenging task as morphological differentiation is not conspicuo...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v82_n1_p35_Caraballo http://hdl.handle.net/20.500.12110/paper_00251461_v82_n1_p35_Caraballo |
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paper:paper_00251461_v82_n1_p35_Caraballo2025-07-30T17:34:36Z Integrative lineage delimitation in rodents of the Ctenomys Corrientes group Corrientes group Ctenomys Iberá wetland Integrative taxonomy Lineage delimitation chromosome cytochrome divergence evolutionary biology geographical distribution morphology phylogenetics phylogeny rodent taxonomy Argentina Corrientes Ibera Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Ctenomys roigi Rodentia The tuco-tucos rodents (genus Ctenomys) of the Corrientes group comprise several populations that inhabit the vast area under the influence of the Iberá wetland. Lineage delimitation within the recently diverged Corrientes group is a challenging task as morphological differentiation is not conspicuous between populations. However, delimitation is crucial for evolutionary studies and conservation issues. In this study, we performed a phylogenetic analysis including cytochrome b (cyt-b) sequences from taxa that had never been studied in a comprehensive context. We integrated previously published chromosomal studies, mitochondrial phylogenies and simple sequence repeat (SSR) variability analyses, and applied a delimitation criterion over the basis of chromosomal incompatibilities and genetic exclusivity. Under this integrative approach seven independently evolving lineages were delimited in the Corrientes group: Ctenomys roigi, which conserves its former definition, Ctenomys dorbignyi and Ctenomys perrensi complex which were redefined, Sarandicito which includes the population of Paraje Sarandicito and probably a group of nearby poorly studied populations, and Iberá i, ii and iii distributed at both sides of the Iberá wetland. We discuss future perspectives to evaluate the proposed lineages and conservation issues concerning these tuco-tucos. © 2018 Walter de Gruyter GmbH, Berlin/Boston. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v82_n1_p35_Caraballo http://hdl.handle.net/20.500.12110/paper_00251461_v82_n1_p35_Caraballo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Corrientes group Ctenomys Iberá wetland Integrative taxonomy Lineage delimitation chromosome cytochrome divergence evolutionary biology geographical distribution morphology phylogenetics phylogeny rodent taxonomy Argentina Corrientes Ibera Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Ctenomys roigi Rodentia |
| spellingShingle |
Corrientes group Ctenomys Iberá wetland Integrative taxonomy Lineage delimitation chromosome cytochrome divergence evolutionary biology geographical distribution morphology phylogenetics phylogeny rodent taxonomy Argentina Corrientes Ibera Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Ctenomys roigi Rodentia Integrative lineage delimitation in rodents of the Ctenomys Corrientes group |
| topic_facet |
Corrientes group Ctenomys Iberá wetland Integrative taxonomy Lineage delimitation chromosome cytochrome divergence evolutionary biology geographical distribution morphology phylogenetics phylogeny rodent taxonomy Argentina Corrientes Ibera Wetlands Ctenomyidae Ctenomys Ctenomys dorbignyi Ctenomys roigi Rodentia |
| description |
The tuco-tucos rodents (genus Ctenomys) of the Corrientes group comprise several populations that inhabit the vast area under the influence of the Iberá wetland. Lineage delimitation within the recently diverged Corrientes group is a challenging task as morphological differentiation is not conspicuous between populations. However, delimitation is crucial for evolutionary studies and conservation issues. In this study, we performed a phylogenetic analysis including cytochrome b (cyt-b) sequences from taxa that had never been studied in a comprehensive context. We integrated previously published chromosomal studies, mitochondrial phylogenies and simple sequence repeat (SSR) variability analyses, and applied a delimitation criterion over the basis of chromosomal incompatibilities and genetic exclusivity. Under this integrative approach seven independently evolving lineages were delimited in the Corrientes group: Ctenomys roigi, which conserves its former definition, Ctenomys dorbignyi and Ctenomys perrensi complex which were redefined, Sarandicito which includes the population of Paraje Sarandicito and probably a group of nearby poorly studied populations, and Iberá i, ii and iii distributed at both sides of the Iberá wetland. We discuss future perspectives to evaluate the proposed lineages and conservation issues concerning these tuco-tucos. © 2018 Walter de Gruyter GmbH, Berlin/Boston. |
| title |
Integrative lineage delimitation in rodents of the Ctenomys Corrientes group |
| title_short |
Integrative lineage delimitation in rodents of the Ctenomys Corrientes group |
| title_full |
Integrative lineage delimitation in rodents of the Ctenomys Corrientes group |
| title_fullStr |
Integrative lineage delimitation in rodents of the Ctenomys Corrientes group |
| title_full_unstemmed |
Integrative lineage delimitation in rodents of the Ctenomys Corrientes group |
| title_sort |
integrative lineage delimitation in rodents of the ctenomys corrientes group |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v82_n1_p35_Caraballo http://hdl.handle.net/20.500.12110/paper_00251461_v82_n1_p35_Caraballo |
| _version_ |
1840325291099029504 |