Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina
We described the karyotypes of five snake taxa from Argentina: Erythrolamprus almadensis, E. ceii, E. poecilogyrus caesius, E. p. schotti and E. p. sublineatus, and also intergrading individuals between the last two subspecies by conventional staining, chromosome bandings and fluorescent in situ hyb...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00013765_v90_n2_p1417_Falcione http://hdl.handle.net/20.500.12110/paper_00013765_v90_n2_p1417_Falcione |
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paper:paper_00013765_v90_n2_p1417_Falcione2023-06-08T14:20:49Z Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina Ag-NOR C-banding Fluorescent banding rDNA-FISH Sex chromosomes Xenodontini ribosome DNA animal Argentina chromosome chromosome analysis chromosome banding pattern Colubridae diploidy female fluorescence in situ hybridization genetics karyotype karyotyping male sex chromosome Animals Argentina Chromosome Banding Chromosomes Colubridae Cytogenetic Analysis Diploidy DNA, Ribosomal Female In Situ Hybridization, Fluorescence Karyotype Karyotyping Male Sex Chromosomes We described the karyotypes of five snake taxa from Argentina: Erythrolamprus almadensis, E. ceii, E. poecilogyrus caesius, E. p. schotti and E. p. sublineatus, and also intergrading individuals between the last two subspecies by conventional staining, chromosome bandings and fluorescent in situ hybridization (FISH) with 28S ribosomal DNA probes. Erythrolamprus ceii and E. almadensis share a diploid chromosome number of 2n= 28, whereas in E. poecilogyrus intraspecific variations were observed: E. p. caesius has 2n= 28, E. p. schotti and E. p. sublineatus as well as in the intergrading individuals have 2n= 32. In E. almadensis and E. p. caesius, the 2nd and 6th chromosome pairs respectively are heteromorphic by size, morphology and C-banding pattern. These results allow us to suggest that these chromosome pairs might be considered as the ZW sex chromosomes in these species. The present comparative cytogenetic analyzes contributes to the already remarkable karyotypic variability in Erythrolamprus genus and propose a hypothesis about potential mechanisms involved in the chromosome evolution among taxa analyzed. Furthermore, the karyotypic differences observed between E. p. caesius (2n= 28) and E. p. schotti and E. p. sublineatus (2n= 32) might play a causal role in speciation. © 2018, Academia Brasileira de Ciencias. All rights reserved. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00013765_v90_n2_p1417_Falcione http://hdl.handle.net/20.500.12110/paper_00013765_v90_n2_p1417_Falcione |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Ag-NOR C-banding Fluorescent banding rDNA-FISH Sex chromosomes Xenodontini ribosome DNA animal Argentina chromosome chromosome analysis chromosome banding pattern Colubridae diploidy female fluorescence in situ hybridization genetics karyotype karyotyping male sex chromosome Animals Argentina Chromosome Banding Chromosomes Colubridae Cytogenetic Analysis Diploidy DNA, Ribosomal Female In Situ Hybridization, Fluorescence Karyotype Karyotyping Male Sex Chromosomes |
| spellingShingle |
Ag-NOR C-banding Fluorescent banding rDNA-FISH Sex chromosomes Xenodontini ribosome DNA animal Argentina chromosome chromosome analysis chromosome banding pattern Colubridae diploidy female fluorescence in situ hybridization genetics karyotype karyotyping male sex chromosome Animals Argentina Chromosome Banding Chromosomes Colubridae Cytogenetic Analysis Diploidy DNA, Ribosomal Female In Situ Hybridization, Fluorescence Karyotype Karyotyping Male Sex Chromosomes Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina |
| topic_facet |
Ag-NOR C-banding Fluorescent banding rDNA-FISH Sex chromosomes Xenodontini ribosome DNA animal Argentina chromosome chromosome analysis chromosome banding pattern Colubridae diploidy female fluorescence in situ hybridization genetics karyotype karyotyping male sex chromosome Animals Argentina Chromosome Banding Chromosomes Colubridae Cytogenetic Analysis Diploidy DNA, Ribosomal Female In Situ Hybridization, Fluorescence Karyotype Karyotyping Male Sex Chromosomes |
| description |
We described the karyotypes of five snake taxa from Argentina: Erythrolamprus almadensis, E. ceii, E. poecilogyrus caesius, E. p. schotti and E. p. sublineatus, and also intergrading individuals between the last two subspecies by conventional staining, chromosome bandings and fluorescent in situ hybridization (FISH) with 28S ribosomal DNA probes. Erythrolamprus ceii and E. almadensis share a diploid chromosome number of 2n= 28, whereas in E. poecilogyrus intraspecific variations were observed: E. p. caesius has 2n= 28, E. p. schotti and E. p. sublineatus as well as in the intergrading individuals have 2n= 32. In E. almadensis and E. p. caesius, the 2nd and 6th chromosome pairs respectively are heteromorphic by size, morphology and C-banding pattern. These results allow us to suggest that these chromosome pairs might be considered as the ZW sex chromosomes in these species. The present comparative cytogenetic analyzes contributes to the already remarkable karyotypic variability in Erythrolamprus genus and propose a hypothesis about potential mechanisms involved in the chromosome evolution among taxa analyzed. Furthermore, the karyotypic differences observed between E. p. caesius (2n= 28) and E. p. schotti and E. p. sublineatus (2n= 32) might play a causal role in speciation. © 2018, Academia Brasileira de Ciencias. All rights reserved. |
| title |
Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina |
| title_short |
Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina |
| title_full |
Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina |
| title_fullStr |
Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina |
| title_full_unstemmed |
Comparative cytogenetic analysis in Erythrolamprus snakes (Serpentes: Dipsadidae) from Argentina |
| title_sort |
comparative cytogenetic analysis in erythrolamprus snakes (serpentes: dipsadidae) from argentina |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00013765_v90_n2_p1417_Falcione http://hdl.handle.net/20.500.12110/paper_00013765_v90_n2_p1417_Falcione |
| _version_ |
1768541540086448128 |