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

Alejandra Hernando


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.


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

Full Text:



Cole C. J., Dessauer H. C., Townsend C. R., and Arnold M. G. (1990), «Unisexual lizard of the genus Gymnophthalmus (Reptilia: Teiidae) in the neotropics: genetics, origin and systematics», Am. Mus. Novitates, 2994, 1 – 29.

Doan T. M. (2003), «A new phylogenetic classification for the gymnophthalmid genera Cercosaura, Pantodactylus and Prionodactylus (Reptilia: Squamata)», Zool. J. Linn. Soc., 137, 101 – 105.

Gorman G. C. (1970), «Chromosomes and the systematics of the family Teiidae (Sauria, Reptilia)», Copeia, 1970(2), 230 – 245.

Kasahara S., Yonenaga-Yassuda Y., Schincariol R. A., and L’Abbate M. (1983), «Chromosome mechanisms of sex determination, G- and C-band patterns and nucleolus organizer regions in Tropidurus torquatus (Sauria, Iguanidae)», Genetica, 60, 151 – 156.

Kezer J. and Sessions S. K. (1979), «Chromosome variation in the plethodontid salamander, Aneides ferreus», Chromosoma, 71, 65 – 80.

Pellegrino K. C. M., Rodrigues M. T., and Yonenaga-Yassuda Y. (1999a), «Chromosomal evolution in Brazilian lizards of genus Leposoma (Squamata, Gymnophthalmidae) from Amazon and Atlantic rain forest: evidences based on R-banding and FISH of telomeric sequences», Hereditas, 131(1), 15 – 21.

Pellegrino K. C. M., Rodrigues M. T., and Yonenaga-Yassuda Y. (1999b), «Chromosomal polymorphism due to occurrence of supernumerary chromosomes and pericentric inversions in the eyelid-less microteiid lizard Nothobachia ablephara (Squamata, Gymnophthalmidae)», Chromosome Res., 7(4), 247 – 254.

Pellegrino K. C. M., Rodrigues M. T., and Yonenaga-Yassuda Y. (2003), «Triploid karyotype of Leposoma percarinatum (Squamata, Gymnophthalmidae)», J. Herpetol., 37(1), 197 – 199.

Pellegrino K. C. M., Rodrigues M. T., Yonenaga-Yassuda Y., and Sites J. W. Jr. (2001), «A molecular perspective on the evolution of microteiid lizards (Squamata, Gymnophthalmidae), a new classification for the family», Biol. J. Linn. Soc., 74, 315 – 338.

Peters J. and Orejas Miranda B. (1986), Catalogue of the Neotropical Squamates. Part II. Lizards and Amphisbaenians, Smithsonian Inst. Press, Washington – London.

Yonenaga-Yassuda Y., Mori L., Chu T. H., and Rodrigues M. T. (1996), «Chromosomal banding patterns in the eyelid — less microteiid radiation: Procellosaurinus and Vanzosaura (Squamata, Gymnophthalmidae)», Cytogenet. Cell Genet., 74, 203 – 210.

Yonenaga-Yassuda Y. and Rodrigues M. T. (1999), «Supernumerary chromosome variation, heteromorphic sex chromosomes and banding patterns in microteiid lizards of the genus Micrablepharus (Squamata, Gymnophthalmidae)», Chromosome Res., 7(1), 21 – 29.

Yonenaga-Yassuda Y., Vanzolini P. E., Rodrigues M. T., and De Carvalho C. M. (1995), «Chromosomal banding patterns in the unisexual microteiid Gymnophthalmus underwoodi and two related sibling species (Gymnophthalmidae, Sauria)», Cytogenet. Cell Genet., 70, 29 – 34.

Zug G. R. (1993), Herpetology. An Introduction Biology of Amphibians and Reptiles, Acad. Press, San Diego – New York.

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


  • There are currently no refbacks.