Karyotypic Characterization of the Microteiid Lizard Cercosaura schreibersii schreibersii (Squamata, Gymnophthalmidae) Including a chromosomal polymorphism

Alejandra Hernando

Abstract


Cytogenetic analysis were performed on fifteen specimens of the microteiid lizard Cercosaura schreibersii schreibersii. The individuals were collected in the north-east of Argentine. Chromosomes from intestinal epithelium and testis were studied after Giemsa and Ag-NOR staining. A karyotype of 2n = 52 was found in thirteen specimens. Diploid number 2n = 53 occurred in two specimens which was interpreted as the result of a fission and pericentric inversion in pair 1. NOR regions were observed on one pair of acrocentric chromosomes. Comparisons of the present results with previously reported Cercosaura karyotypes indicate interspecific variations.

Keywords


Gymnophthalmidae; Cercosaura; microteiid lizards; chromosomes; polymorphism; Ag-NOR

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References


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DOI: https://doi.org/10.30906/1026-2296-2006-13-2-93-96

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