2013
DOI: 10.1590/s1415-47572013005000026
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Abstract: In this study, two species of Romaleidae grasshoppers, Radacridium mariajoseae and R.nordestinum, were analyzed after CMA3/DA/DAPI sequential staining and fluorescence in situ hybridization (FISH) to determine the location of the 18S and 5S rDNA and histone H4 genes. Both species presented karyotypes composed of 2n = 23, X0 with exclusively acrocentric chromosomes. CMA3+ blocks were detected after CMA3/DA/DAPI staining in only one medium size autosome bivalent and in the X chromosome in R. mariajoseae. On the … Show more

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Cited by 4 publications
(4 citation statements)
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“…The restriction of histone H3 to only one chromosome pair in all species analyzed is in agreement with previous reports on the Acrididae (Cabrero et al, 2009;Palacios-Gimenez et al, 2013) and for other families such as Proscopiidae (Cabral-de-Mello et al, 2011b) and Romaleidae (Anjos et al, 2013;Neto et al, 2013). The dispersion of H3 histone sites in the genomes of members of the family Acrididae has only been reported in three species: Rhammatocerus brasiliensis (Oliveira et al, 2011), A. flavolineata (Bueno et al, 2013), and Dichromatos lilloanus (PalaciosGimenez et al, 2013).…”
Section: Discussionsupporting
confidence: 91%
See 1 more Smart Citation
“…The restriction of histone H3 to only one chromosome pair in all species analyzed is in agreement with previous reports on the Acrididae (Cabrero et al, 2009;Palacios-Gimenez et al, 2013) and for other families such as Proscopiidae (Cabral-de-Mello et al, 2011b) and Romaleidae (Anjos et al, 2013;Neto et al, 2013). The dispersion of H3 histone sites in the genomes of members of the family Acrididae has only been reported in three species: Rhammatocerus brasiliensis (Oliveira et al, 2011), A. flavolineata (Bueno et al, 2013), and Dichromatos lilloanus (PalaciosGimenez et al, 2013).…”
Section: Discussionsupporting
confidence: 91%
“…According to the literature (Cabral-de-Mello et al, 2011a;Oliveira et al, 2011), extensive variation in the number of 5S rDNA sites is common in grasshoppers of the families Acrididae and Romaleidae (Anjos et al, 2013;Neto et al, 2013), although they can be restricted to a single pair of chromosomes as in the Proscopiidae (Cabral-de-Mello et al, 2011b). Acrididae show a range of distribution patterns, from species with single sites to species with sites dispersed throughout all chromosomes, in addition to intermediate situations (Cabral-de-Mello et al, 2011a;Oliveira et al, 2011).…”
Section: Discussionmentioning
confidence: 99%
“…In Tropidacris collaris , there are two types of heterochromatin composition: a GC-rich one and another neutral for AT, e.g., all chromosomes with homogeneous staining. These results reinforce the differences between the two species, where the pattern found in Tropidacris collaris is more similar to that observed in most species of Romaleidae (Souza et al 1998, Pereira and Souza 2000, Souza et al 2003, Anjos et al 2013). Tropidacris collaris has a wider distribution, and in Tropidacris cristata grandis it is geographically more restricted.…”
Section: Discussionsupporting
confidence: 88%
“…Among grasshoppers, the knowledge of 5S rDNA evolution was primarily obtained from chromosomal analysis. To date, cytogenetic mapping through fluorescent in situ hybridization (FISH) was performed in approximately 50 species belonging to the distinct families Acrididae (Cabralde-Mello et al 2011a; Palacios-Gimenez et al 2013), Romaleidae (Anjos et al 2013;Neto et al 2013), and Proscopiidae (Cabral-de-Mello et al 2011b). In contrast, few studies examining the molecular organization and evolution of 5S rDNA have been published.…”
Section: Introductionmentioning
confidence: 99%