Cytogenetic analyses of five amazon lizard species of the subfamilies Teiinae and Tupinambinae and review of karyotyped diversity the family Teiidae
| Autor: | Natália Dayane Moura Carvalho, Federico Arias, Carlos Henrique Schneider, Francijara Araújo da Silva, Maria Claudia Gross |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Reptilia
Kentropyx Zoology Plant Science Chromosome Differential staining Heterochromatin Genetics Squamata Cnemidophorus Animalia Chordata Research Articles rDNA-FISH Teiidae biology Macroteiidae biology.organism_classification Kentropyx calcarata Microchromosome Ameiva Animal Science and Zoology Crocodilurus Tupinambis Biotechnology |
| Zdroj: | Comparative Cytogenetics 9(4): 625-644 Comparative Cytogenetics |
| ISSN: | 1993-078X 1993-0771 |
| Popis: | Lizards of the family Teiidae (infraorder Scincomorpha) were formerly known as Macroteiidae. There are 13 species of such lizards in the Amazon, in the genera Ameiva (Meyer, 1795), Cnemidophorus (Wagler, 1830), Crocodilurus (Spix, 1825), Dracaena (Daudin, 1801), Kentropyx (Spix, 1825) and Tupinambis (Daudin, 1802). Cytogenetic studies of this group are restricted to karyotype macrostructure. Here we give a compilation of cytogenetic data of the family Teiidae, including classic and molecular cytogenetic analysis of Ameiva ameiva (Linnaeus, 1758), Cnemidophorus sp.1, Kentropyx calcarata (Spix, 1825), Kentropyx pelviceps (Cope, 1868) and Tupinambis teguixin (Linnaeus, 1758) collected in the state of Amazonas, Brazil. Ameiva ameiva, Kentropyx calcarata and Kentropyx pelviceps have 2n=50 chromosomes classified by a gradual series of acrocentric chromosomes. Cnemidophorus sp.1 has 2n=48 chromosomes with 2 biarmed chromosomes, 24 uniarmed chromosomes and 22 microchromosomes. Tupinambis teguixin has 2n=36 chromosomes, including 12 macrochromosomes and 24 microchromosomes. Constitutive heterochromatin was distributed in the centromeric and terminal regions in most chromosomes. The nucleolus organizer region was simple, varying in its position among the species, as evidenced both by AgNO3 impregnation and by hybridization with 18S rDNA probes. The data reveal a karyotype variation with respect to the diploid number, fundamental number and karyotype formula, which reinforces the importance of increasing chromosomal analyses in the Teiidae. |
| Databáze: | OpenAIRE |
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