Cerradomys goytaca (Tavares, Pessoa & Goncalves, 2011)

Moreira, Camila Do Nascimento, Ventura, Karen, Percequillo, Alexandre Reis & Yonenaga-Yassuda, Yatiyo, 2020, A review on the cytogenetics of the tribe Oryzomyini (Rodentia: Cricetidae: Sigmodontinae), with the description of new karyotypes, Zootaxa 4876 (1), pp. 1-111 : 7

Cerradomys goytaca

Karyotype: 2n = 54 and FN = 66. Autosomal complement: seven metacentric and submetacentric pairs (three large and four small), and 19 acrocentric pairs (one large and the remaining medium to small). Sex chromosomes: X, a large subtelocentric; Y, was a medium acrocentric ( Tavares et al. 2011, pp. 651, Fig. 4 ). The same diploid number was reported by Bonvicino et al. (2014, pp. 529, Fig. 10 ), but the authors reported a different fundamental number of 62 and 63, due to a presence of two small acrocentric pairs instead of two small submetacentrics, and due to a pericentric inversion involving one chromosome of a small autosome pair.

Figures

FIGURE 4. Karyotype of Euryoryzomys sp., male with 2n = 58 and FN = 92. (A) Conventional staining (JAP 228); (B) C-banding (JAP 228); (C) G-banding (JAP 228); (D) Metaphase plate after fluorescent in situ hybridization with telomeric probe (left) and DAPI staining (right) (JAP 228), arrows indicate the hybridization of interstitial telomeric sequence.

FIGURE 10. Karyotype of Neacomys sp. 2, male with 2n = 54 and FN = 62. (A) Conventional staining (JAP 63); (B) C-banding (JAP 63); (C) G-banding (JAP 63); (D) Metaphase plate after fluorescent in situ hybridization with telomeric probe (left) and DAPI staining (right) (JAP 63).