1. A new karyotype for the spiny rat Clyomys laticeps (Thomas, 1909) (Rodentia, Echimyidae) from Central Brazil.
- Author
-
Bezerra, Alexandra M. R., Pagnozzi, Juliana M., Carmignotto, Ana Paula, Yonenaga-Yassuda, Yatiyo, and Rodrigues, Flavio H. G.
- Subjects
- *
KARYOTYPES , *ECHIMYIDAE , *CYTOGENETICS , *ANATOMICAL specimens ,PARQUE Nacional das Emas (Brazil) - Abstract
Clyomys Thomas, 1916 is a semifossorial rodent genus of spiny rats represented by only one species, C. laticeps, which inhabits the tropical savannas and grasslands of central Brazil and eastern Paraguay. Here we describe a new karyotype of C. laticeps found in populations of Emas National Park, Goiás state, Brazil. The four analyzed specimens had a diploid number (2n) of 32 and a fundamental autosome number (FN) of 54. Cytogenetic data include conventional staining, CBG and GTG-banding. The karyotype presents 12 meta/submetacentric pairs (1 to 12) and 3 pairs of acrocentrics (13 to 15) with gradual decrease in size. The X chromosome is a medium submetacentric and the Y is a medium acrocentric. The semifossorial habits together with habitat specificity could have contributed to the karyological variations found on this genus. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF