Heterochromatin base pair composition and diversification in holocentric chromosomes of kissing bugs (Hemiptera, Reduviidae)

dc.creatorBardella, Vanessa Bellini
dc.creatorPita, Sebastián
dc.creatorVanzela, André Luis Laforga
dc.creatorGalvão, Cleber
dc.creatorPanzera, Francisco
dc.date2017-03-07T15:15:15Z
dc.date2017-03-07T15:15:15Z
dc.date2016
dc.date.accessioned2023-09-26T20:15:56Z
dc.date.available2023-09-26T20:15:56Z
dc.identifierBARDELLA, Vanessa Bellini; et al. Heterochromatin base pair composition and diversification in holocentric chromosomes of kissing bugs (Hemiptera, Reduviidae). Mem Inst Oswaldo Cruz, v.111, n.10, p.614-624, Oct. 2016.
dc.identifier1678-8080
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/17961
dc.identifier10.1590/S1984-29612016065
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8852838
dc.descriptionThe subfamily Triatominae (Hemiptera, Reduviidae) includes 150 species of blood-sucking insects, vectors of Chagas disease or American trypanosomiasis. Karyotypic information reveals a striking stability in the number of autosomes. However, this group shows substantial variability in genome size, the amount and distribution of C-heterochromatin, and the chromosome positions of 45S rDNA clusters. Here, we analysed the karyotypes of 41 species from six different genera with C-fluorescence banding in order to evaluate the base-pair richness of heterochromatic regions. Our results show a high heterogeneity in the fluorescent staining of the heterochromatin in both autosomes and sex chromosomes, never reported before within an insect subfamily with holocentric chromosomes. This technique allows a clear discrimination of the heterochromatic regions classified as similar by C-banding, constituting a new chromosome marker with taxonomic and evolutionary significance. The diverse fluorescent patterns are likely due to the amplification of different repeated sequences, reflecting an unusual dynamic rearrangement in the genomes of this subfamily. Further, we discuss the evolution of these repeated sequences in both autosomes and sex chromosomes in species of Triatominae.
dc.formatapplication/pdf
dc.languageeng
dc.publisherFundação Oswaldo Cruz. Instituto Oswaldo Cruz
dc.rightsopen access
dc.subjectTriatominae
dc.subjectDNA repetitivo
dc.subjectHeteroptera
dc.subjectCromossomos holocêntricos
dc.subjectHeteroptera
dc.subjectTriatominae
dc.subjectholocentric chromosomes
dc.subjectCMA/DAPI banding
dc.subjectrepetitive DNA
dc.titleHeterochromatin base pair composition and diversification in holocentric chromosomes of kissing bugs (Hemiptera, Reduviidae)
dc.typeArticle


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