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This research aims to analyze how Portuguese-speaking African Literature is presented in the Contemporary Portuguese collection dialogue, reflection and use, secondary education by the authors Cereja; Vienna; Damien (2016), adopted by the Anisio Veras Reference School, in the city of Verdejante-PE. The research is based on studies that address African Literature and its context of teaching in textbooks in high school, as we can highlight in Brazil (2008); Abdala Júnior (2006), Souza (2006), Machado (2010) Silva (2003), Sidrim (2019), Lopes (2010), Chaves (2006), Honwana (2006), Fonseca; Moreira (2017), Ferreira (1987), among others. The methodology used in the research was qualitative, documental and deductive method, Fachin (2006), Prodanov; Freitas (2013) and Cardano (2017). The results indicate that the teaching of African literature in the analyzed collection is little explored, since in volume I we hardly found any content; in volume II there is only a quote due to an interview carried out with the singer Emicida about racism and in volume III we are faced with only one chapter that presents a small discussion of texts and authors. In this way, we see that textbooks do not fully include studies aimed at African literatures. [ABSTRACT FROM AUTHOR]

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The recently described taxon Drymoreomys albimaculatus is endemic to the Brazilian Atlantic Forest and its biology and genetics are still poorly known. Herein, we present, for the first time, the karyotype of the species using classical and molecular cytogenetics, which showed 2n=62, FN=62, and interstitial telomeric signals at the sex chromosomes. Nuclear and mitochondrial DNA sequences from the two karyotyped individuals verify the taxonomic identity as the recently described D. albimaculatus and confirm the relationship of the species with other Oryzomyini. Additionally, external morphological information is provided. [ABSTRACT FROM AUTHOR]

Pseudoryzomys simplex, the false rice rat, is a monotypic genus of the Oryzomyini tribe (Sigmodontinae) distributed in part of Bolivia, Paraguay, Argentina and Brazil. Its diploid number has been described as 56 acrocentric chromosomes decreasing in size and no karyotype figure has been depicted. Herein, we present karyotypic data on P. simplex, including chromosome banding and molecular fluorescent in situ hybridization using telomeric sequences and the whole X-chromosome of its sister clade Holochilus brasiliensis (HBR) as probes. A case of remarkable autosomal heteromorphism due to the presence of a whole heterochromatic arm leading to the variability of FN is reported, as well as the occurrence of regions of homology between the X and Y chromosomes (pseudoautosomal regions) after chromosome painting with the HBR X probe on P. simplex metaphases.

A novel karyotype with 2n = 50, FN = 48, was described for specimens of Thaptomys collected at Una, State of Bahia, Brazil, which are morphologically indistinguishable from Thaptomys nigrita, 2n = 52, FN = 52, found in other localities. It was hence proposed that the 2n = 50 karyotype could belong to a distinct species, cryptic of Thaptomys nigrita, once chromosomal rearrangements observed, along with the geographic distance, might represent a reproductive barrier between both forms. Phylogenetic analyses using maximum parsimony and maximum likelihood based on partial cytochrome b sequences with 1077 bp were performed, attempting to establish the relationships among the individuals with distinct karyotypes along the geographic distribution of the genus; the sample comprised 18 karyotyped specimens of Thaptomys, encompassing 15 haplotypes, from eight different localities of the Atlantic Rainforest. The intra-generic relationships corroborated the distinct diploid numbers, once both phylogenetic reconstructions recovered two monophyletic lineages, a northeastern clade grouping the 2n = 50 and a southeastern clade with three subclades, grouping the 2n = 52 karyotype. The sequence divergence observed between their individuals ranged from 1.9% to 3.5%.