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MITOCHONDRIAL DNA VARIATION OF TRIATOMA INFESTANS POPULATIONS AND ITS IMPLICATION ON THE SPECIFIC STATUS OF T. MELANOSOMA
Triatoma melanosoma
DNA Mitocondrial
Citogenética
Filogenia
Sistemática molecular
Vetores da doença de Chagas
Triatoma melanosoma
Mitochondrial DNA
Cytogenetics
Allozymes
Phylogeny
Molecular systematics
Chagas disease vectors
Author
Affilliation
Universidade Federal do Rio de Janeiro. Departamento de Genética. Rio de Janeiro, RJ, Brasil.
Facultad de Ciencias. Sección Genética Evolutiva. Montevideo, Uruguay.
Facultad de Ciencias. Sección Genética Evolutiva. Montevideo, Uruguay.
Institut de Recherche pour le Development. La Paz, Bolivia.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
London School of Hygiene and Tropical Medicine. London, UK.
Centers for Disease Control and Prevention. Division of Parasitic Diseases. Atlanta, USA.
Facultad de Ciencias. Sección Genética Evolutiva. Montevideo, Uruguay.
Facultad de Ciencias. Sección Genética Evolutiva. Montevideo, Uruguay.
Institut de Recherche pour le Development. La Paz, Bolivia.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
London School of Hygiene and Tropical Medicine. London, UK.
Centers for Disease Control and Prevention. Division of Parasitic Diseases. Atlanta, USA.
Abstract
DNA sequence comparison of 412 base-pairs fragments of the mitochondrial cytochrome B gene was used to infer the genetic structure of nine geographical Triatoma infestans populations and their phylogenetic relationship with T. melanosoma and T. brasiliensis. T. infestans and T. melanosoma were compared by morphometry, allozyme and cytogenetic analyses, as well as subjected to reciprocal crosses, in order to clarify the taxonomic status of the latter. No differences were found to distinguish the two species and the crosses between them yielded progeny. T. infestans populations presented four haplotypes that could be separated in two clusters: one formed by the samples from Bolivia (Andes and Chaco) and the other formed by samples from Argentina and Brazil. Silvatic and domestic T. infestans populations from Bolivia (Andes) were genetically identical.
Keywords in Portuguese
Triatoma infestansTriatoma melanosoma
DNA Mitocondrial
Citogenética
Filogenia
Sistemática molecular
Vetores da doença de Chagas
Keywords
Triatoma infestansTriatoma melanosoma
Mitochondrial DNA
Cytogenetics
Allozymes
Phylogeny
Molecular systematics
Chagas disease vectors
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