Cariological Diversity of Small Rodents in Tocantins, Brazil

Name: Cariological Diversity of Small Rodents in Tocantins, Brazil
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ISBN: 9786209738784

José Fernando de Sousa Lima

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English

Our Knowledge Publishing
06 March 2026

Genetics (non-medical)

Summary
Details

This study was the first conducted in Brazil's newest state, Tocantins. Small rodents were collected from various types of vegetation. Chromosome preparations were subjected to conventional staining and G, C and RON banding. Chromosome differentiation was produced after treatment with ethidium bromide in some individuals. Nine genera and 12 species were karyotyped: Bolomys lasiurus (2n=34 and NA=34), Calomys tener (2n=66 and NA=66), Calomys sp.n. (2n=46 and NA=66), Nectomys rattus (2n=52, 53 and NA=52, 54), Oligoryzomys flavescens (2n=64 and NA=66), Oligoryzomys sp.n. (2n=70 and NA=76), Oryzomys megacephalus (Karyotype A with 2n=54 and NA=62; Karyotype B with 2n=52/53 and NA=58/60), Oryzomys gr. subflavus (2n=46 and NA=56), Rhipidomys macrurus (2n=44 and NA=48), all of which belong to the family Cricetidae; Proechimys roberti (2n=30 and NA=54), Trichomys apereoides (2n=30 and NA=54), are from the Echimyidae family; and Rattus rattus (2n=38 and NA=58), is from the Muridae family. Most karyotypes are similar/identical to those described in the literature. Some specimens in the sample, Calomys sp.n. and Oligoryzomys sp.n., presented unpublished karyotypes. One O.megacephalus presented a 2n variable to that of the species.

By: José Fernando de Sousa Lima
Imprint: Our Knowledge Publishing
Dimensions: Height: 229mm, Width: 152mm, Spine: 7mm
Weight: 177g
ISBN: 9786209738784
ISBN 10: 6209738788
Pages: 124
Publication Date: 06 March 2026
Audience: General/trade , ELT Advanced
Format: Paperback
Publisher's Status: Active