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| Author(s): |
Daniel Pagotto Vendrami
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Medicina Tropical de São Paulo (IMT) |
| Defense date: | 2017-10-02 |
| Examining board members: |
Mauro Toledo Marrelli;
Carlos Eduardo de Almeida;
Tamara Nunes de Lima Camara;
Lincoln Suesdek Rocha;
Joao Aristeu da Rosa
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| Advisor: | Mauro Toledo Marrelli |
| Abstract | |
Triatoma sordida is considered of secondary importance in the cycle of Human Chagas Disease, since it has occupied the place of Triatoma infestans in the peri-domicile of the houses. Triatoma costalimai is a wild and endemic species of Brazilian cerrado. Recently there has been an increase in the number of home invasions by these species, due to the impact caused by man in the environment. Both species have already been found naturally infected by Trypanosoma cruzi and, therefore, contribute to the antropozootic cycle of the disease. The present work had as objective to verify the genetic and morphological variability of these two species, through the geometric morphometry of the head and mitochondrial molecular markers. The results show that the populations of T. sordida are highly structured genetically, and that the wing morphology shows heterogeneity in the wing shape, which allows to conclude that even if genetically structured, there is no speciation process occurring for this species. The populations of T. costalimai have high morphological variability of the connexivum, although the wings and heads present some similarity between the populations studied. Genetic markers indicate a distinction between specimens with a continuous orange line in the connexivum of those with triangular orange spots. The differences found suggest that T. costalimai comprises two subspecies, with morphological and chromatic differences. (AU) | |
| FAPESP's process: | 12/19238-4 - POPULATION STRUCTURE OF SPECIES: TRIATOMA SORDIDA, TRIATOMA MATOGROSSENSIS AND TRIATOMA COSTALIMAI, BASED ON MITOCHONDRIAL MARKERS, MICROSATELLITE AND MORPHOMETRY GEOMETRIC ALAR |
| Grantee: | Daniel Pagotto Vendrami |
| Support Opportunities: | Scholarships in Brazil - Doctorate |