Phylogenetic Relationships of the <i>Spinolai</i> Complex and Other Triatomini Based on Mitochondrial DNA Sequences (Hemiptera: Reduviidae)

Campos, Ricardo; Botto‐Mahan, Carezza; Coronado, Ximena; Catalá, Silvia; Solari, Aldo

doi:10.1089/vbz.2011.0954

Cited by 16 publications

(16 citation statements)

References 12 publications

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“…The correlations between these markers have been verified in triatomines (Dujardin et al 1999, Villegas et al 2002, Martínez-Hernández et al 2010, Ceballos et al 2011, Villacís 2011) and other medically important insects , Bouyer et al 2007). In some cases, the phenotypic differences observed in triatomines (Moreno et al 2006) have been subsequently corroborated with genetic markers (Campos et al 2012). Moreover, Villacís (2011) showed greater microgeographic differentiation of Rhodnius ecuadoriensis populations when antennal phenotypes were used instead of microsatellite markers.…”

Section: Discussionmentioning

confidence: 89%

Potential sources of Triatoma infestans reinfesting peridomiciles identified by morphological characterization in Los Llanos, La Rioja, Argentina

Hernández

Dujardin

Gorla

et al. 2013

Mem. Inst. Oswaldo Cruz

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The presence of Triatoma infestans in habitats treated with insecticides constitutes a frequent problem in endemic areas. Basing our study on the hypothesis that descendants of a residual population should be more similar to the pre-treatment population than to any other, we compared the indications of two quantitative morphological approaches. This study seeks to find the origin of 247 T. infestans from three populations found in two chicken coops and a goat corral after treatment with insecticides. The results obtained by quantitative morphology suggest that the T. infestans found between three-34 months after the application of insecticides formed mixed populations with insects derived from residual foci and neighbouring habitats. Our analyses also showed the presence of a phenotype which does not resemble neither the pre-treatment phenotype nor the one from neighbouring populations, suggesting the presence of a particular post-treatment phenotype. The heads size showed some variations in males from different populations and remained unchanged in females, which reinforces the hypothesis of an intraspecific competition for food with priority for females. This article presents, for the first time, the combined analysis of geometric morphometry of heads and antennal phenotypes to identify the composition of reinfesting populations.

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Section: Discussionmentioning

confidence: 89%

Potential sources of Triatoma infestans reinfesting peridomiciles identified by morphological characterization in Los Llanos, La Rioja, Argentina

Hernández

Dujardin

Gorla

et al. 2013

Mem. Inst. Oswaldo Cruz

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“…() for M. spinolai , and because M. gajardoi is a close species to M. spinolai and part of the Spinolai complex as suggested by Campos et al . (, ), this species could also delay defaecation on hosts, which would make it a less‐efficient vector under natural conditions. However, the feeding behaviour of M. gajardoi has not been studied.…”

Section: Discussionmentioning

confidence: 99%

“…The results reported by Canals et al (1999) for M. spinolai and T. infestans suggest that because of the differences in their defaecation behaviour once they feed on their hosts, T. infestans would be a better vector than M. spinolai that takes more time to release their droppings, whereas T. infestans do so immediately. When considering the results of Canals et al (1999) for M. spinolai, and because M. gajardoi is a close species to M. spinolai and part of the Spinolai complex as suggested by Campos et al (2013aCampos et al ( , 2013b, this species could also delay defaecation on hosts, which would make it a less-efficient vector under natural conditions. However, the feeding behaviour of M. gajardoi has not been studied.…”

Section: Discussionmentioning

confidence: 99%

An entomological and seroepidemiological study of the vectorial‐transmission risk of Chagas disease in the coast of northern Chile

González

Reyes

Canals

et al. 2015

Medical Vet Entomology

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Four species of triatomines are known from Chile: Triatoma infestans Klug, Mepraia spinolai Porter, M. gajardoi Frías, Henry & González, and M. parapatrica Frías (Hemiptera: Reduviidae), the last three are endemic. The geographical distribution of M. gajardoi includes the coastal areas in the north of Chile between 18° and 21°S, an area with both a resident workforce and summer-season visitors. A study was developed to assess the risk of vectorial transmission of Chagas disease by M. gajardoi in hut settlements on the coast of the Tarapacá Region, in particular in Caleta San Marcos and Caleta Río Seco. The study comprised fingerstick sampling of 95 persons, venous samples from 29 domestic dogs and capture of 52 triatomines, from both fishing coves. The samples were analysed by enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR) techniques. The results show that, of the total number of persons studied, 100% were negative for Trypanosoma cruzi Chagas (Trypanosomatida: Trypanosomatidae) antibodies, 10.34% of canids were positive for the antibody and 5.8% of M. gajardoi were infected to the PCR technique. The presence of this species in areas close to human settlements constitutes a risk to human populations established on the coast of northern Chile.

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“…7 Mepraia gajardoi is a genetically related triatomine described as a separate species from M. spinolai. It has similar feeding behavior and is distributed along the northern coast of Chile between 18 S and 21 S. 8,9 Blood meal analyses from an insular population of M. spinolai from the southern Pacific Ocean coast of Chile (26 S) showed that coastal populations feed on seabirds, marine mammals, and reptiles. 10 The purpose of this study was to determine T. cruzi genotypes in M. gajardoi from wild ecotopes of northern Chile.…”

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confidence: 99%

Trypanosoma cruzi Genotypes in Mepraia gajardoi from Wild Ecotopes in Northern Chile

Toledo¹,

Vergara²,

Campos³

et al. 2013

The American Society of Tropical Medicine and Hygiene

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Abstract. We evaluated Trypanosoma cruzi infection in 397 wild Mepraia gajardoi specimens from five coastal localities in northern Chile by detection of minicircle DNA by polymerase chain reaction. The wild capture sites were classified into two ecotopes: a fully wild ecotope (ecotope 1) and a wild ecotope near human dwellings (ecotope 2). Infection rates varied between 11% and 27%. Minicircle hybridization assays showed that T. cruzi lineages Tc II and Tc VI were commonly detected in ecotope 1 and ecotope 2, respectively. These results are discussed in the context of insect proximity to human dwellings, the alimentary profile of Mepraia sp., T. cruzi lineages detected in the past in the same diseaseendemic area circulating in humans, and Triatoma infestans.

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Phylogenetic Relationships of the Spinolai Complex and Other Triatomini Based on Mitochondrial DNA Sequences (Hemiptera: Reduviidae)

Cited by 16 publications

References 12 publications

Potential sources of Triatoma infestans reinfesting peridomiciles identified by morphological characterization in Los Llanos, La Rioja, Argentina

Potential sources of Triatoma infestans reinfesting peridomiciles identified by morphological characterization in Los Llanos, La Rioja, Argentina

An entomological and seroepidemiological study of the vectorial‐transmission risk of Chagas disease in the coast of northern Chile

Trypanosoma cruzi Genotypes in Mepraia gajardoi from Wild Ecotopes in Northern Chile

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