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Am. J. Trop. Med. Hyg., 80(6), 2009, pp. 988-991
Copyright © 2009 by The American Society of Tropical Medicine and Hygiene

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SHORT REPORT


Wild Ecotopes and Food Habits of Triatoma longipennis Infected by Trypanosoma cruzi Lineages I and II in Mexico

Marie-France Bosseno, Christian Barnabé, Maria Jesus Ramirez Sierra, Pierre Kengne, Sergio Guerrero, Felipe Lozano, Kasten Ezequiel, Magallón Gastélum, AND Simone Frédérique Brenière*
Département Société et Santé, Unité de Recherche 016 and Unité de Recherche 165, Institut de Recherche pour le Développement, Montpellier, France; Centro Universitario de Ciencias de la Salud, Instituto Regional de Investigación en Salud Pública, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Laboratorio de Parasitología, Centro de Investigaciones Regionales, Universidad Autónoma de Yucatán, Yucatán, Mexico

 

ABSTRACT

The control of wild triatomine populations that can invade dwellings is a major challenge for Chagas disease control in Mexico, but a better knowledge of the biology of these populations is required to develop appropriate control methods. We describe a new terrestrial ecotope of Triatoma longipennis, a principal vector in the occidental part of Mexico, in addition to its previously identified niche in rock pile boundary walls. Analysis of feeding hosts in the two ecotopes showed that this species is able to diversify its food sources outside of the principal hosts, Dasypus novemcinctus and Procyon lotor, and to disperse in search of new meals. Moreover, T. longipennis are strongly infected not only by the Trypanosoma cruzi I lineage found in the domestic cycle, but also by T. cruzi lineage II. The impact of T. cruzi II on human infection remains to be determined.

Received March 28, 2008. Accepted for publication February 12, 2009.

Acknowledgments: We thank the biology students working in the laboratory of Dr. Sergio Guerrero for helping capture mammals in field.

Financial support: This study was supported by the Institut de Recherche pour le Développement.

* Address correspondence to Simone Frédérique Brenière, Unité de Recherche 016, Caractérisation et Contrôle des Populations de Vecteurs, IRD, Institut de Recherche pour le Développement, Avenida Hernando Siles No. 5290, Esq. Calle 7, Obrajes, CP 9214, La Paz, Bolivia. E-mail: breniere{at}ird.fr

Authors’ addresses: Marie-France Bosseno, Christian Barnabé, Pierre Kengne, and Simone Frédérique Brenière, Institut de Recherche pour le Développement, 911 Avenue Agropolis, BP 64501, 34394 Montpellier Cedex 5, France. Maria Jesus Ramirez Sierra, Laboratorio de Parasitología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán, Avenida Itzaes No. 490 x 59, 97000, Mérida, Yucatán, Mexico. Sergio Guerrero, Centro de Estudios en Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Apartado Postal 1-1919, CP 44101, Guadalajara, Jalisco, Mexico. Felipe Lozano, Kasten Ezequiel, and Magallón Gastelúm, Centro Universitario de Ciencias de la Salud, Instituto Regional de Investigación en Salud Pública, Universidad de Guadalajara, Guadalajara, Jalisco, México.






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Copyright © 2009 by the American Society of Tropical Medicine and Hygiene.