Oecomys concolor (Wagner, 1845)

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 : 55

Oecomys concolor

Karyotype: 2n = 60 and FN = 62. Autosomal complement: one large subtelocentric pair, one small metacentric pair, and 27 acrocentric pairs large to small decreasing in size. Sex chromosomes: X, a large submetacentric; Y, a medium subtelocentric ( Gardner & Patton 1976, pp. 12, Fig. 5C ). Baker et al. (1983) also reported a diploid number of 2n = 58 and 2n = 60 for O. concolor , and performed the G-banding of these karyotypes. The karyotype of O. concolor reported by Gardner & Patton (1976) was very similar to that presented for O. catherinae . However, systematic works of the genus ( Gomes-Júnior et al. 2016; Suárez-Villota et al. 2017) recognized this karyotype as belonging to O. concolor .

Figures

FIGURE 5. Distribution of diploid and fundamental number of karyotyped specimens of genus Holochilus. (■) H. brasiliensis; (□) H. chacarius; (l) H. sciureus; (○) H. venezuelae; (▲) H. vulpinus.