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2030-01-01
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- IOC - Artigos de Periódicos [12642]
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SYSTEMATICS OF MEPRAIA (HEMIPTERA-REDUVIIDAE): CYTOGENETIC AND MOLECULAR VARIATION
Hemiptera
Variação cromossômica
Introgressão
Filogenia
Vetores Triatominae
Hemiptera
Triatominae vectors
Mepraia
Chromosomal variation
rDNA
ITS
COI
Phylogeny
Introgression
Autor
Afiliación
Universidad de la República. Facultad de Ciencias. Instituto de Biologia. Sección Genética Evolutiva. Montevideo, Uruguay.
Universidad de la República. Facultad de Ciencias. Instituto de Biologia. Sección Genética Evolutiva. Montevideo, Uruguay.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Doenças Parasitárias. Rio de Janeiro, RJ. Brasil.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Universidad de la República. Facultad de Ciencias. Instituto de Biologia. Sección Genética Evolutiva. Montevideo, Uruguay.
Universidad de la República. Facultad de Ciencias. Instituto de Biologia. Sección Genética Evolutiva. Montevideo, Uruguay.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Doenças Parasitárias. Rio de Janeiro, RJ. Brasil.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Universidad de Valencia. Facultad de Farmacia. Departamento de Parasitología. Burjassot, Valencia, Spain.
Universidad de la República. Facultad de Ciencias. Instituto de Biologia. Sección Genética Evolutiva. Montevideo, Uruguay.
Resumen en ingles
The haematophagous insects of the subfamily Triatominae (Hemiptera-Reduviidae) have great epidemiological importance as vectors of Trypanosoma cruzi, the causative agent of Chagas disease. Mepraia was originally described as a monotypic genus comprised of Mepraia spinolai, distributed along coastal areas of northern Chile (from Region I to the Metropolitan Region). Recently, some M. spinolai populations have been ranked as a new species named Mepraia gajardoi. Several populations along the distribution range of the genus were sampled, and genetic differentiation was studied based upon the analysis of three molecular markers: cytogenetics (karyotype and chromosome behaviour during meiosis using the C-banding technique), mitochondrial DNA (a cytochrome oxidase I gene fragment), and nuclear ribosomal DNA (intergenic region including the two internal transcribed spacers ITS-1 and ITS-2 and the 5.8S rRNA gene). The data here presented indicate that populations within the Mepraia genus (excluding Region II specimens) can be divided into two separate lineages. One lineage is comprised of specimens from the northernmost Region I and represents M. gajardoi. The other includes samples from the southern III, IV and the Metropolitan Regions, and represents M. spinolai. Region II individuals deserve particular attention as their relationship to the two identified lineages is not clear-cut. While they appear to belong to M. spinolai based on cytogenetics and rDNA markers, COI results indicate a closer relationship to M. gajardoi. This disagreement can be due to mitochondrial DNA introgression or the retention of ancestral polymorphisms.
Palabras clave en portugues
Doença de ChagasHemiptera
Variação cromossômica
Introgressão
Filogenia
Vetores Triatominae
Palabras clave en ingles
Chagas diseaseHemiptera
Triatominae vectors
Mepraia
Chromosomal variation
rDNA
ITS
COI
Phylogeny
Introgression
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