Browsing by Autor "Pereira, J"

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    Enzymatic variability and phylogenetic relatedness among Triatoma infestans, T. platensis, T. delpontei and T. rubrovaria
    (Facultad de Medicina, Enfermería, Nutrición y Tecnología Médica, 1996) Pereira, J
    Four congeneric species of triatomine bugs, Triatoma platensis, T. delpontei, T. rubrovaria and T. infestans, were examined by multilocus enzyme electrophoresis. These four species are distributed sympatrically throughout Argentina, Paraguay and Uruguay, and were found to be closely related according to their known ethological, ecological and morphological traits. In order to evaluate previous hypotheses concerning the phylogenetic branching within this group, isoenzyme patterns were submitted to classical phenetic and genetic clustering analysis. Results are discussed in the light of occasional natural gene flow between T. infestans and T. platensis, and indicate that ecology is the main factor explaining both their present status and their morphological differentiation.
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    Genética de poblaciones de triatomineos en relación a las estrategias de control de insectos vectores
    (Facultad de Medicina, Enfermería, Nutrición y Tecnología Médica, 1995) Pereira, J
    The causative agent of Chagas disease infects more than 16 millions persons in Latin America; the resulting human chronic pathology is responsible of an important economic loss. The authors first analyze the main features of this endemy and then one population genetics programme associated to vector control iniciative established by seven South American countries.