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Am. J. Trop. Med. Hyg., 74(2), 2006, pp. 303-305
Copyright © 2006 by The American Society of Tropical Medicine and Hygiene

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SHORT REPORT


IDENTIFICATION IN TRIATOMINE VECTORS OF FEEDING SOURCES AND TRYPANOSOMA CRUZI VARIANTS BY HETERODUPLEX ASSAY AND A MULTIPLEX MINIEXON POLYMERASE CHAIN REACTION

MARIE-FRANCE BOSSENO, LUIS SANTOS GARCÍA, FRANÇOISE BAUNAURE, EZEQUIEL MAGALLÓN GASTELÚM, MARGARITA SOTO GUTIERREZ, FELIPE LOZANO KASTEN, ERIC DUMONTEIL, AND SIMONE FRÉDÉRIQUE BRENIÈRE*
Unite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France; Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

 

ABSTRACT

Feeding sources of triatomine vectors (Triatoma longipennis) collected in peridomiciles in Mexico were identified by a heteroduplex assay developed with triatomine blood meals. Trypanosoma cruzi parasites were also characterized in the same blood meal samples by multiplex-polymerase chain reaction assay of mini-exon gene inter-genic regions. The main blood meal source was from rats, but the bugs were able to feed on a wide variety of hosts, and human blood meals were identified. Trypanosoma cruzi was the only flagellate species identified in the blood meals. All populations belong to the T. cruzi I lineage, a result that is consistent with the previously assumed predominance of this lineage in Mexico. This combination of blood meal and T. cruzi lineage identification provides a powerful tool for understanding T. cruzi transmission cycles.

Received July 12, 2005. Accepted for publication October 5, 2005.

* Address correspondence to Simone Frédérique Brenière, Unite de Recherche 008 Pathogénie des Trypanosomatidés, Institut de Re-cherche pour le Développement, 911 Avenue Agropolis, BP 5045, 34032 Montpellier Cedex 1, France. E-mail: breniere{at}mpl.ird.fr

Authors’ addresses: Marie-France Bosseno, Françoise Baunaure, and Simone Frédérique Brenière, Unite de Recherche 008 Pathogénie des Trypanosomatidés, Institut de Recherche pour le Développement, 911 Avenue Agropolis, BP 5045, 34032 Montpellier Cedex 1, France, Telephone: 33-4-67-41-62-98, Fax: 33-4-67-41-63-30, E-mails: mbosseno{at}mpl.ird.fr, fbaunaure{at}montp2.fr, and breniere{at}mpl.ird.fr. Luis Santos García and Eric Dumonteil, Laboratorio de Parasitología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán, Avenida Itzaes No. 490 x 59, 97000, Mérida, Yucatán, Mexico, E-mail: oliver{at}tunku.wady.mx. Ezequiel Magallón, Gastelúm, Margarita Soto Gutierrez, and Felipe Lozano Kasten, Departamento de Salud Pública, Centro Universitario de Ciencias de la Salud, AP 2-136, Universidad de Guadalajara, Guadalajara, Jalisco, México, E-mails: mge28525{at}cercs.udg.mx, msg0059_2001{at}hotmail.com, and f_lozano_k{at}hotmail.com.




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A. WALTER, F. LOZANO-KASTEN, M.-F. BOSSENO, E. G. C. RUVALCABA, M. S. GUTIERREZ, C. E. M. LUNA, F. BAUNAURE, P. PHELINAS, E. MAGALLON-GASTELUM, and S. F. BRENIERE
PERIDOMICILARY HABITAT AND RISK FACTORS FOR TRIATOMA INFESTATION IN A RURAL COMMUNITY OF THE MEXICAN OCCIDENT
Am J Trop Med Hyg, March 1, 2007; 76(3): 508 - 515.
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Copyright © 2006 by the American Society of Tropical Medicine and Hygiene.