Triatoma petrocchiae (Hemiptera, Reduviidae, Triatominae): A Chagas disease vector of T. brasiliensis species complex associated to reptiles

Lilioso, Maurício; Pires-Silva, Dayane; Fontes, Fernanda von Hertwig Mascarenhas; Oliveira, Jader de; Rosa, João Aristeu da; Vilela, Roberto V.; Folly-Ramos, Elaine; Almeida, Carlos Eduardo

doi:10.1016/j.meegid.2020.104307

Cited by 9 publications

(9 citation statements)

References 19 publications

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“…It was also shown that this high prevalence of natural infection is combined with high populational densities of T. brasiliensis in this state if compared to Paraíba [8]. These findings were confirmed by several authors throughout multiples approaches [23,43,44,45,46,47]. Noteworthy, even the populations that fed on cavies were not highly infected in Paraíba state.…”

Section: Discussionsupporting

confidence: 67%

“…Five sylvatic populations were found to feed on reptiles and one peridomestic. Recently, it was found that reptiles are the main food source (86%) for T. petrocchiae [45]-a triatomine that cohabits with T. brasiliensis [23]. Indeed, sporadic blood meals on coldblooded animals (such as frogs) have already been observed for T. brasiliensis [5].…”

Section: Discussionmentioning

confidence: 99%

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Dynamics of food sources, ecotypic distribution and Trypanosoma cruzi infection in Triatoma brasiliensis from the northeast of Brazil

et al. 2020

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Innovative approaches used to combat Chagas disease transmission tend to combine a set of comprehensive efforts to understand the ecology of local vectors. In this work we identified molecularly the blood meal of 181 Triatoma brasiliensis, distributed in 18 populations (8 sylvatic and 10 peridomestic), which were collected across a range of 240 km (East-West) and 95 km (North-South) in the semi-arid region of northeastern, Brazil. We used the vertebrate mitochondrial gene (cytochrome B) sequencing applied to DNA isolated from bug midgut to identify the insect blood meal sources via the BLAST procedure. The peridomestic populations were classified according to two main hypotheses of site-occupancy for T. brasiliensis: the first says that the infestation is mainly driven by structures that resemble its natural habitat (stony-like ecotopes) and the second assumes that it is associated with key-hosts (rodents and goats). Rodents of the Caviidae family (Galea spixii and Kerodon rupestris) were identified as the key-host of T. brasiliensis, but also the potential Trypanosoma cruzi reservoir-able to connect the sylvatic and domestic T. cruzi cycle. Cats also deserve to be studied better, as potential T. cruzi reservoirs. By modeling the food sources + site-occupancy + T. cruzi natural infection, we identified man-made ecotopes suitable for forming dense triatomine infestations with high rates of T. cruzi natural infection, which may be taken into account for vector control measures.

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Dynamics of food sources, ecotypic distribution and Trypanosoma cruzi infection in Triatoma brasiliensis from the northeast of Brazil

et al. 2020

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“…T. petrochiae was not found infected by T. cruzi in Ceará during the period of this study. Its occurrence (only 2 specimens) was reported in 2010 inside dwellings in 2 municipalities in the southern region of the state, near the borders to the east with the states of Rio Grande do Norte and Paraíba, where T. petrochiae was recently found in cohabitation with T. brasiliensis in rocky outcrops 27 .…”

Section: Discussionmentioning

confidence: 99%

Surveillance of Chagas disease vectors in Ceará State, Northeastern Brazil

et al. 2021

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Objetivo: Descrever a distribuição especial, tendência temporal e a as taxas de infecção natural por T. cruzi em triatomíneos capturados no Estado do Ceará, entre 2003 e 2014. Métodos: Dados do Programa de Controle da Doença de Chagas foram utilizados para descrever as espécies de triatomíneos circulantes, sua distribuição no Estado, os locais de captura (intradomicílio e peridomicílio) e as taxas de infecção natural por T. cruzi entre os anos de 2003 e 2014. Resultados: Durante este período, 401.721 triatomíneos foram capturados em 89,1% dos municípios do Estado, pertencendo às espécies Triatoma pseudomaculata (53,9%), T. brasiliensis (40,5%), Rhodnius nasutus (1,9%), Panstrongylus megistus (1,5%), P. lutzi (1,3%), T. rubrofasciata (0,8%), P. geniculatus (< 0,1%) e T. petrochiae (< 0,1%). A maioria dos espécimes foi capturada no peridomicílio (83,0%), com destaque para T. pseudomaculata e T. brasiliensis, enquanto P. lutzi foi predominante no intradomicílio. P. lutzi teve a maior taxa de infecção por T. cruzi (7,8%), enquanto T. pseudomaculata (0,9%), T. brasiliensis (1,0%) e P. megistus (1,3%) tiveram as menores taxas. Conclusões: A ocorrência de um ciclo enzoótico de T. cruzi e a presença de animais sinantrópicos que proporcionam uma fonte de alimentação sanguínea aos triatomíneos aumentam o risco de sua transmissão aos humanos, exigindo das autoridades sanitárias uma vigilância constante desses vetores.

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“…Recently, was observed that reptile blood is the main food source for T. petrocchiae [78]. On the other hand, T. b. brasiliensis is mainly associated with rodents [49].…”

Section: Plos Onementioning

confidence: 99%

Revisiting the hybridization processes in the Triatoma brasiliensis complex (Hemiptera, Triatominae): Interspecific genomic compatibility point to a possible recent diversification of the species grouped in this monophyletic complex

et al. 2021

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Triatomines are hematophagous insects of great epidemiological importance, since they are vectors of the protozoan Trypanosoma cruzi, the etiological agent of Chagas disease. Triatoma brasiliensis complex is a monophyletic group formed by two subspecies and six species: T. b. brasiliensis, T. b. macromelasoma, T. bahiensis, T. juazeirensis, T. lenti, T. melanica, T. petrocchiae and T. sherlocki. The specific status of several species grouped in the T. brasiliensis complex was confirmed from experimental crossing and analysis of reproductive barriers. Thus, we perform interspecific experimental crosses between T. lenti and other species and subspecies of the T. brasiliensis complex and perform morphological analysis of the gonads and cytogenetic analysis in the homeologous chromosomes of the hybrids of first generation (F1). Besides that, we rescue all the literature data associated with the study of reproductive barriers in this monophyletic complex of species and subspecies. For all crosses performed between T. b. brasiliensis, T. b. macromelasoma, T. juazeirensis and T. melanica with T. lenti, interspecific copulas occurred (showing absence of mechanical isolation), hybrids were obtained, none of the male hybrids presented the phenomenon of gonadal dysgenesis and 100% pairing between the chromosomes homeologous of the hybrids was observed. Thus, we demonstrate that there are no pre-zygotic reproductive barriers installed between T. lenti and the species and subspecies of the T. brasiliensis complex. In addition, we demonstrate that the hybrids obtained between these crosses have high genomic compatibility and the absence of gonadal dysgenesis. These results point to reproductive compatibility between T. lenti and species and subspecies of the T. brasiliensis complex (confirming its inclusion in the complex) and lead us to suggest a possible recent diversification of the taxa of this monophyletic group.

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Triatoma petrocchiae (Hemiptera, Reduviidae, Triatominae): A Chagas disease vector of T. brasiliensis species complex associated to reptiles

Cited by 9 publications

References 19 publications

Dynamics of food sources, ecotypic distribution and Trypanosoma cruzi infection in Triatoma brasiliensis from the northeast of Brazil

Dynamics of food sources, ecotypic distribution and Trypanosoma cruzi infection in Triatoma brasiliensis from the northeast of Brazil

Surveillance of Chagas disease vectors in Ceará State, Northeastern Brazil

Revisiting the hybridization processes in the Triatoma brasiliensis complex (Hemiptera, Triatominae): Interspecific genomic compatibility point to a possible recent diversification of the species grouped in this monophyletic complex

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