Volume 10, Number 3, March 2004

Genomic Changes of Chagas Disease Vector, South America

Francisco Panzera,* Jean Pierre Dujardin,† Paula Nicolini,* María Noel Caraccio,* Virginia Rose,* Tatiana Tellez,‡ Hernán Bermúdez,‡ María Dolores Bargues,§ Santiago Mas-Coma,§ José Enrique O’Connor,§ and Ruben Pérez*
*Universidad Mayor de la República, Montevideo, Uruguay; †Institut de Recherche pour le Développement, Montpellier, France; ‡Universidad Mayor de San Simón, Cochabamba, Bolivia; and §Universidad de Valencia, Valencia, Spain

Figure 3. Gonial mitotic prometaphases in male (A) and female (B) specimens of Triatoma infestans from non-Andean regions. Scale bar = 10 µm. A: Most common C-banding pattern detected in non-Andean region (BB BB AA). This pattern is constituted by four autosomes with a C-block in both chromosomal ends (B morph) and two chromosomes with a C-block in only one telomere (A morph) indicated by arrowheads. The Y chromosome appears C-heterochromatic. The other 14 autosomes and the X chromosome are C-negative (euchromatic). B: Females only have C-bands in the autosomes; sex chromosomes (XX) are euchromatic and indistinguishable from autosomes without heterochromatin.

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This page last reviewed February 5, 2004

Emerging Infectious Diseases Journal
National Center for Infectious Diseases
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