High Chromosomal Reorganization and Presence of Microchromosomes in Chactidae Scorpions from the Brazilian Amazon

Página do item simplificado
dc.contributor.authorAlmeida, Bruno Rafael Ribeiro de
dc.contributor.authorMalcher, Stella Miranda
dc.contributor.authorCosta, Marlyson
dc.contributor.authorMartins, Jonas Gama
dc.contributor.authorProcópio, Rudi Emerson De Lima
dc.contributor.authorNoronha, Renata Coelho Rodrigues
dc.contributor.authorNagamachi, Cleusa Yoshiko
dc.contributor.authorPieczarka, Júlio César
dc.date.accessioned2023-06-27T17:22:07Z
dc.date.available2023-06-27T17:22:07Z
dc.date.issued2023-04
dc.description.resumoScorpions are of particular interest in cytogenomic studies, as they can present a high incidence of chromosomal rearrangements heterozygous in natural populations. In this study, we cytogenetically analyzed four species of Chactidae. In Brotheas, 2n = 40 was observed in Brotheas silvestris, 2n = 48 in Brotheas paraensis, and 2n = 50 (cytotype A) or 2n = 52 (cytotype B) among populations of Brotheas amazonicus. Our results showed a bimodal karyotype in Neochactas parvulus, 2n = 54, with microchromosomes and a concentration of constitutive heterochromatin in macrochromosomes. The 45S rDNA is located in only one pair of the karyotype, with different heteromorphisms of clusters of this rDNA in the cytotype B of B. amazonicus, with NOR-bearing chromosomes involved in multi-chromosomal associations during meiosis I. The U2 snDNA was mapped in the interstitial region of distinct karyotype pairs of three Chactidae species. Our results indicate the possible formation of cryptic species in B. amazonicus; the different 45S rDNA configurations in the genome of this species may result from amplification and degeneration. We suggest that the bimodal karyotype in N. parvulus results from fusion/fission events and that the unequal distribution of repetitive DNAs between macro and microchromosomes contributes to the maintenance of its asymmetry.pt_BR
dc.identifier.doi10.3390/biology12040563
dc.identifier.issn20797737
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/39573
dc.language.isoenpt_BR
dc.publisher.journalBiologypt_BR
dc.relation.ispartofVolume 12, Issue 4pt_BR
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/br/*
dc.subjectSciVal Topicspt_BR
dc.subjectMetricspt_BR
dc.subjectFunding detailspt_BR
dc.subjectEscorpiãopt_BR
dc.titleHigh Chromosomal Reorganization and Presence of Microchromosomes in Chactidae Scorpions from the Brazilian Amazonpt_BR
dc.typeArtigopt_BR

Arquivos

Pacote original

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
biology-12-00563.pdf
Tamanho:
3.59 MB
Formato:
Adobe Portable Document Format
Descrição:
Baixar

Coleções

Artigos