Neacomys dubosti

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: 30

publication ID

https://doi.org/10.11646/zootaxa.4876.1.1

publication LSID

lsid:zoobank.org:pub:190EC586-E14B-4AEF-A5EF-3DA401656159

DOI

http://doi.org/10.5281/zenodo.4566497

persistent identifier

http://treatment.plazi.org/id/03A587ED-3222-FFC8-83E9-FA282F9FF852

treatment provided by

Plazi

scientific name

Neacomys dubosti
status

 

Neacomys dubosti  

Karyotype: 2n = 64 and FN = 68. Autosomal complement: three small metacentric pairs, and 28 acrocentric pairs. Sex chromosomes: X, a medium submetacentric; Y, a small acrocentric. C-banding metaphases exhibited blocks of constitutive heterochromatin on the pericentromeric region of all autosomes. The X chromosome presented the short arm entirely heterochromatic. The Y chromosome presented the long arm entirely heterochromatic. G-banding was also performed. FISH with 18s rDNA sequences revealed signals of NOR on the short arm of six acrocentric pairs, and one of these chromosomes also had a NOR on the distal region of the long arm. FISH with telomeric sequences revealed signals exclusively at the ends of all chromosome arms and no interstitial signals were observed ( Silva et al. 2015, pp. 4, Fig. 2C View FIGURE 2 ). According to Silva et al. (2015) this karyotype was similar to N. spinosus   reported by Patton et al. (2000) (2n = 64 and FN = 68), except for the morphology of the X chromosome, which was subtelocentric in N. spinosus   and submetacentric in N. dubosti   . Another diploid number of 62 was reported by Voss et al. (2001) for a sample from Amapá, state of Brazil ( Table 6, Fig. 7 View FIGURE 7 ).

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Rodentia

Family

Muridae

Genus

Neacomys