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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Chromosome mapping of 28S ribosomal genes in 11 species of Cassidinae (Coleoptera: Chrysomelidae)

Full text
Author(s):
Lopes, Amalia T. [1] ; Fernandes, Flavia R. [2] ; Schneider, Marielle C. [3]
Total Authors: 3
Affiliation:
[1] Univ Estadual Paulista, UNESP, Dept Biol, Ave 24A, 1515 Bela Vista, BR-13506900 Sao Paulo - Brazil
[2] Museu Paraense Emilio Goeldi, Dept Entomol, Ave Perimetral 1901, BR-66077830 Belem, Para - Brazil
[3] Univ Fed Sao Paulo, UNIFESP, Dept Ciencias Biol, Ave Prof Artur Riedel 275, BR-09972270 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: European Journal of Entomology; v. 114, p. 546-553, 2017.
Web of Science Citations: 0
Abstract

In this study, we examined for the first time the distribution of the 28S ribosomal genes in beetles of the subfamily Cassidinae. More than 55% of the species in this subfamily have a similar karyotype, 2n = 16 + Xy(p). For this work, we selected species belonging to the tribes Cassidini and Mesomphaliini, which have, respectively, the most conserved and diversified karyotype characteristics within the Cassidinae. An analysis of 11 species revealed that rDNA sites on one pair of autosomes is the most frequent pattern, occurring in 10 species. This condition occurs in the seven genera examined and in species of both of the tribes, Cassidini and Mesomphaliini. Nevertheless, the differences in the locations of 28S rDNA were more pronounced in the tribe Cassidini and among species with similar karyotype characteristics. On the other hand, in Mesomphaliini, the increase in the diploid number was not accompanied by an increase in the number of ribosomal sites. Moreover, the comparison of the number and localization of major rDNA sites with the distribution of constitutive heterochromatin indicates that there is no direct correlation between the dispersion of constitutive heterochromatin and 28S rDNA genes in Cassidinae. (AU)

FAPESP's process: 11/21643-1 - Meiosis in scorpions (Arachnida): model to understand the evolution in species with achiasmate chromosomes
Grantee:Marielle Cristina Schneider
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 12/12619-2 - Mechanisms of chromosomal differentiation in beetles of the subfamily Cassidinae s.l. (Polyphaga, Chrysomelidae)
Grantee:Amália Torrezan Lopes
Support Opportunities: Scholarships in Brazil - Doctorate