Érika Carime Borges
Oswaldo Cruz Foundation
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Featured researches published by Érika Carime Borges.
Cadernos De Saude Publica | 2000
Francisco Panzera; Ruben Pérez; Paula Nicolini; Sonia Hornos; Jane Costa; Érika Carime Borges; Liléia Diotaiuti; C. J. Schofield
Triatoma brasiliensis is the most important vector of Chagas disease in the semiarid zone of the Northeast of Brazil. Several authors have reported the occurrence of four chromatic patterns with morphological, ecological, and genetic differences. In order to determine the existence of cytogenetic differentiation between these chromatic forms, we analyzed their karyotypes and the chromosome behavior during the male meiotic process. Triatoma brasiliensis shows distinct and specific chromosome characteristics, which differ from those observed in all other triatomine species. However, no cytogenetic differences were observed between the four chromatic forms of T. brasiliensis. The lack of chromosome differentiation among them could indicate that the populations of this species are in a process of differentiation that does not involve their chromosomal organization.
Journal of Medical Entomology | 2000
Érika Carime Borges; Jean-Pierre Dujardin; C. J. Schofield; Alvaro J. Romanha; Liléia Diotaiuti
Abstract Isoenzymes, random amplified polymorphic DNA (RAPD), and morphometry were used to compare genetic variability within and between three populations of Triatoma brasiliensis Neiva, 1911 from northeast Brazil. The isoenzyme profiles were identical for the three populations, whereas the complex RAPD patterns allowed clear discrimination between the three. Morphometric analysis, using characters of the head capsule, also showed discrimination between the three populations but only in comparisons of males, not females. The results show considerable genetic heterogeneity in T. brasiliensis, with an indication of geographic structuring possibly resulting from a recent series of domestication events.
Memorias Do Instituto Oswaldo Cruz | 1999
Herton Helder Rocha Pires; Érika Carime Borges; Regina Esteves de Andrade; Elias Seixas Lorosa; Liléia Diotaiuti
Laboratorio de Biologia de Triatomineos eEpidemiologia da Doenca de Chagas, Centro dePesquisas Rene Rachou-Fiocruz, Av. Augusto de Lima1715, 30190-002 Belo Horizonte, MG, Brasil*Laboratorio de Precipitina, Departamento deEntomologia, Instituto Oswaldo Cruz, Av. Brasil 4365,21045-900 Rio de Janeiro, RJ, BrasilKey words: Triatomine - Triatoma sordida - blood-meal source - control - Bahia - Brazil
Memorias Do Instituto Oswaldo Cruz | 1999
Érika Carime Borges; Herton Helder Rocha Pires; Silvia Ermelinda Barbosa; C. M. S. Nunes; Marcos H. Pereira; Alvaro J. Romanha; Liléia Diotaiuti
Among the 126 Brazilian members of the subfamily Triatominae, those of greatest epidemiological importance include Triatoma infestans, passively introduced into this country from Bolivia through human migrations; Panstrongylus megistus, with a wide distribution in humid forest areas; T. brasiliensis, indigenous to areas of caatinga scrub and with a great capacity to invade houses; T. pseudomaculata, also associated with caatinga areas but with predominantly peridomiciliar behaviour; and T. sordida, originally from areas of cerrado, and also mainly peridomiciliar (Forattini 1980, Alencar 1987). Following the recent elimination of domestic populations of T. infestans by the Chagas Disease Control Programme (Dias & Schofield 1999), the accelerated rate of environmental modification by man has meant that several other species once considered to be of secondary or even tertiary importance in the transmission of Trypanosoma cruzi to humans are beginning to be found relatively frequently and at surprisingly high densities in manmade habitats, with a corresponding risk of new foci of transmission becoming established (FNS 1998). It is hoped that the study of genetic characteristics of triatomines will facilitate identification of those species or populations with the greatest capacity for adaptation to different habitats, providing a valuable tool for epidemiological vigilance that allows us to determine which areas have the highest risk of domiciliation by the insects. In addition, the genetic characterization of triatomine populations will also allow us to determine what role the sylvatic insects play in the recolonization of areas treated with insecticide. In Bolivia, Dujardin and Cassini (1995) used morphometric comparisons of sylvatic T. infestans populations with domestic populations before and after residual spraying with insecticide to demonstrate that insects captured after treatment were survivors of the original population and not invaders from the surrounding wild habitat. This knowledge can be used to determine flaws in existing control measures and permit their improvement. The recent constitution of a network of studies
Biochemical Genetics | 2001
Rpp Soares; S. E. Barbosa; Érika Carime Borges; T. A. Melo; Alvaro J. Romanha; Jean-Pierre Dujardin; C. J. Schofield; Liléia Diotaiuti
Two Brazilian populations of Psammolestes tertius (Ceará and Minas Gerais) collected from thornbird nests (Furnariidae) were compared by male genital morphology, morphometry, isoenzymes, and random amplified polymorphic DNA (RAPD). Male genitalia showed no difference between the populations. In contrast, morphometry, isoenzyme, and RAPD clearly distinguished the two populations. Possible mechanisms of dispersal and the origin of Psammolestes are discussed.
Acta Tropica | 2011
H.H.R. Pires; Silvia Ermelinda Barbosa; Érika Carime Borges; J.A. Silva; A.M. Siqueira; Liléia Diotaiuti
The triatomine bug Triatoma infestans was probably originated in Bolivia and dispersed passively over large areas of South America, where it is the major vector of Trypanosoma cruzi. In its probable origin area this species shows two different patterns of behaviour, being found both in sylvatic and human related habitats. Such behaviour is not observed in other areas of its distribution, where it is exclusive to human related habitats. The main objective of the present study was to evaluate head morphometry characters and isoenzymes patterns of two T. infestans populations, one collected in Minas Gerais (Brazil) and other in the Cochabamba Valley (Bolivia), in order to elucidate the factors that could have an implication with the different colonization behaviour. The two populations presented differences in both morphometric (head size) and isoenzymes (specially PGM enzyme profile). The insects from the colonies reared for several years in laboratory conditions, showed reduction in head size starting from the third generation, maintaining this same size in all generations after, until 10 years after generation. The laboratory rearing conditions could be similar to human associated habitats, inducing certain level of genetic homogeneity. Our results showed increase of genetic homogeneity in Brazilian and laboratory-reared colonies from Bolivia, that may be due to a selection process due to passive dispersion, followed by several founder effects episodes and genetic drift.
Acta Tropica | 2005
Érika Carime Borges; Jean-Pierre Dujardin; C. J. Schofield; Alvaro J. Romanha; Liléia Diotaiuti
Experimental Parasitology | 2006
Érika Carime Borges; Evandro Marques de Menezes Machado; Eloi S. Garcia; Patrícia Azambuja
Revista Da Sociedade Brasileira De Medicina Tropical | 2002
João Carlos Pinto Dias; Evandro Marques de Menezes Machado; Érika Carime Borges; Eliana Furtado Moreira; Claudia Gontijo; Bernardino Vaz de Mello Azeredo
Revista Da Sociedade Brasileira De Medicina Tropical | 2005
Maria Hismênia H.M. Garcia; Lindemberg Souza; Rita de Cássia Moreira de Souza; Alexandre Silva de Paula; Érika Carime Borges; Silvia Ermelinda Barbosa; Christopher John Schoffield; Liléia Diotaiuti