Am J Trop Med Hyg. 2006 Feb;74(2):303-5.

Identification in triatomine vectors of feeding sources and Trypanosoma cruzi variants by heteroduplex assay and a multiplex miniexon polymerase chain reaction.

Bosseno MF, García LS, Baunaure F, Gastelúm EM, Gutierrez MS, Kasten FL, Dumonteil E, Brenière SF.

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Unite de Recherche 008 Pathogénie et Epidémiologie des Trypanosomatidés, Institut de Recherche pour le Développement, Montpellier, France.

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.

PMID:: 16474087; [PubMed - indexed for MEDLINE]

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Identification in triatomine vectors of feeding sources and Trypanosoma cruzi variants by heteroduplex assay and a multiplex miniexon polymerase chain reaction.

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