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Am. J. Trop. Med. Hyg., 73(2), 2005, pp. 321-325
Copyright © 2005 by The American Society of Tropical Medicine and Hygiene

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MOLECULAR TAXONOMIC STUDY OF CHAGAS DISEASE VECTORS FROM THE PHYLLOSOMA, LECTICULARIA, AND RUBROFASCIATA COMPLEXES

FERNANDO MARTÍNEZ, RICARDO ALEJANDRE-AGUILAR, YOLANDA HORTELANO MONCADA, AND BERTHA ESPINOZA*
Department of Immunology, Biomedical Research Institute, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico; Department of Parasitology, Biological Sciences School, Instituto Politecnico Nacional, Mexico City, Mexico; Department of Zoology, Institute of Biology, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico

The Triatiominae (Hemiptera: Reduviidae) are hematophagous hemipters of importance because they transmit Trypanosoma cruzi, the causal agent of Chagas disease. The aim of this study was to define the possible relationships between species of the Phyllosoma complex (Triatoma mazzottii, Triatoma pallidipennis, and Triatoma longipennis) and species of other complexes present in Mexico that have not been previously analyzed (Triatoma lecticularia and Triatoma rubida). In addition, it was determined the inclusion of Triatoma bassolsae in the Phyllosoma complex by using 10 isoenzymatic systems (corresponding to the 14 loci). Results of isoenzymatic study show that between the species of the Phyllosoma complex including Triatoma bassolsae, the polymorphism of the analyzed enzymes ranges from 14% to 50% (P ≤ 0.95) and the species from external complexes showed polymorphism values of 43% (Triatoma lecticularia), 43% (Triatoma rubida), and 36% (Triatoma infestans). The genetic tree shows a clear difference between species of the Phyllosoma complex and the other complexes.

Received August 26, 2004. Accepted for publication March 16, 2005.

Financial support: This work was supported by the PAPIIT IN 232399 from DGAPA, UNAM. F.M. acknowledges the scholarship from the DGAPA, UNAM.

* Address correspondence to Bertha Espinoza, Department of Immunology, Biomedical Research Institute, Universidad Nacional Autonoma de Mexico, C.P. 04510, P.O. 70 228, Mexico City, Mexico. E-mail: besgu{at}servidor.unam.mx

Reprint requests: Bertha Espinoza, Department of Immunology, Biomedical Research Institute, Universidad Nacional Autonoma de Mexico, C.P. 04510, P.O. no. 70 228, Mexico City, Mexico, Telephone: 56223832, Fax: 56223369, E-mail: besgu{at}servidor.unam.mx.




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 Am J Trop Med HygHome page
P. Tamay-Segovia, R. Alejandre-Aguilar, F. Martinez, G. Villalobos, F. J. Z.-D. de la Serna, P. de la Torre, J. P. Laclette, S. Blum-Dominguez, and B. Espinoza
Two Triatoma dimidiata Clades (Chagas Disease Vector) Associated with Different Habitats in Southern Mexico and Central America
Am J Trop Med Hyg, March 1, 2008; 78(3): 472 - 478.
[Abstract] [Full Text] [PDF]


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Copyright © 2005 by the American Society of Tropical Medicine and Hygiene.