New arrangements on several species subcomplexes of Triatoma genus based on the chromosomal position of ribosomal genes (Hemiptera - Triatominae)

Autor(es)

Pita, Sebastian ^[1] ; Lorite, Pedro ^[2] ; Nattero, Julieta ^[3] ; Galvao, Cleber ^[4] ; Alevi, Kaio C. C. ^[5] ; Teves, Simone C. ^{[6, 7]} ; Azeredo-Oliveira, Maria T. V. ^[5] ; Panzera, Francisco ^[1]

Afiliação do(s) autor(es)

^[1] Univ Republica, Fac Ciencias, Secc Genet Evolut, Igua 4225, Montevideo 11400 - Uruguay

^[2] Univ Jaen, Area Genet, Dept Biol Expt, Jaen - Spain

^[3] Univ Nacl Cordoba, CONICET, IIByT, Fac Ciencias Exactas Fis & Nat, Catedra Introducc, Cordoba - Argentina

^[4] Inst Oswaldo Cruz FIOCRUZ, Lab Nacl & Int Referencia Taxon Triatomineos, Rio De Janeiro - Brazil

^[5] Univ Estadual Paulista Julio de Mesquita Filho IB, Inst Biociencias Letras & Ciencias Exatas, Dept Biol, Lab Biol Celular, Sao Paulo - Brazil

^[6] Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Lab Interdisciplinar Vigilancia Entomol Diptera &, Rio De Janeiro - Brazil

^[7] Univ Fed Rural Rio de Janeiro, Programa Posgrad Biol Anim, Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INFECTION GENETICS AND EVOLUTION; v. 43, p. 225-231, SEP 2016.
• Citações Web of Science: 10

Resumo

The hemipteran subfamily Triatominae includes 150 blood-sucking species, vectors of Chagas disease. By far the most specious genus is Triatoma, assembled in groups, complexes and subcomplexes based on morphological similarities, geographic distribution and genetic data. However, many molecular studies questioned the species integration of several subcomplexes as monophyletic units. In triatomines, chromosomal position of major ribosomal DNA (rDNA) loci is extremely variable but seems to be species-specific and an evolutionary conserved genetic trait, so that closely related species tend to have ribosomal clusters in the same chromosomal location. Considering that the autosomal position as the ancestral character for all heteropteran species, including triatomines, we suggest that the movement of rDNA loci from autosomes to sex chromosomes rapidly established reproductive barriers between divergent lineages. We proposed that the rDNA translocation from the autosomes to the sex chromosomes restrict reproductive compatibility and eventually promote speciation processes. We analyzed the chromosomal position of 45S rDNA clusters in almost all species of the matogrossensis, rubrovaria, maculata and sordida subcomplexes. The fluorescent in situ hybridization results are discussed considering the available genetic data and we proposed new arrangements in the species that constitute each one of these subcomplexes. (C) 2016 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/19764-0 - Citotaxonomia e evolução cromossômica na subfamília Triatominae
• Beneficiário: Kaio Cesar Chaboli Alevi
• Modalidade de apoio: Bolsas no Brasil - Doutorado