Amazonian Triatomine Biodiversity and the Transmission of Chagas Disease in French Guiana: In Medio Stat Sanitas

Péneau, Julie; Nguyen, Anne; Flores-Ferrer, Alheli; Blanchet, Denis; Gourbière, Sébastien

doi:10.1371/journal.pntd.0004427

Cited by 12 publications

(10 citation statements)

References 94 publications

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“…pictipes , overall somewhat rainier) municipalities where these Amazonian bugs occur ( Fig 3 , S2 Fig , S3 and S4 Tables). This is consistent with results from other Amazon sub-regions, where more dispersing sylvatic triatomines are typically caught at light traps during the drier season [ 71 , 72 ]. Rain effects were also negative, yet non-linear, for R .…”

Section: Discussionsupporting

confidence: 90%

“…This suggests that populations of these two species may be rarer, or perhaps less dense, in municipalities towards the drier end of the rainfall range in Tocantins; at rainier sites, heavy rainfall may hinder these bugs’ dispersive flight, albeit to a lesser extent than for Amazonian Rhodnius spp. ( Fig 3 , S2 Fig and S3 – S6 Tables) [ 57 , 58 , 71 , 72 ].…”

Section: Discussionmentioning

confidence: 99%

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Drivers of house invasion by sylvatic Chagas disease vectors in the Amazon-Cerrado transition: A multi-year, state-wide assessment of municipality-aggregated surveillance data

Brito¹,

Gorla

Diotaiuti³

et al. 2017

PLoS Negl Trop Dis

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BackgroundInsecticide spraying efficiently controls house infestation by triatomine bugs, the vectors of Trypanosoma cruzi. The strategy, however, is ineffective against sylvatic triatomines, which can transmit Chagas disease by invading (without colonizing) man-made structures. Despite growing awareness of the relevance of these transmission dynamics, the drivers of house invasion by sylvatic triatomines remain poorly understood.Methods/FindingsAbout 12,000 sylvatic triatomines were caught during routine surveillance in houses of Tocantins state, Brazil, in 2005–2013. Using negative binomial regression, information-theoretic model evaluation/averaging, and external model validation, we investigated the effects of regional (Amazon/Cerrado), landscape (preservation/disturbance), and climate covariates (temperature, rainfall) on the municipality-aggregated numbers of house-invading Rhodnius pictipes, R. robustus, R. neglectus, and Panstrongylus geniculatus. House invasion by R. pictipes and R. robustus was overall more frequent in the Amazon biome, tended to increase in municipalities with more well-preserved land, and decreased in rainier municipalities. Across species, invasion decreased with higher landscape-disturbance levels and in hotter-day municipalities. Invasion by R. neglectus and P. geniculatus increased somewhat with more land at intermediate disturbance and peaked in average-rainfall municipalities. Temperature effects were more pronounced on P. geniculatus than on Rhodnius spp.ConclusionsWe report widespread, frequent house invasion by sylvatic triatomines in the Amazon–Cerrado transition. Our analyses indicate that readily available environmental metrics may help predict the risk of contact between sylvatic triatomines and humans at coarse geographic scales, and hint at specific hypotheses about climate and deforestation effects on those vectors–with some taxon-specific responses and some seemingly general trends. Thus, our focal species appear to be quite sensitive to higher temperatures, and might be less common in more heavily-disturbed than in better-preserved environments. This study illustrates, in sum, how entomological routine-surveillance data can be efficiently used for Chagas disease risk prediction and stratification when house-colonizing vectors are absent.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Drivers of house invasion by sylvatic Chagas disease vectors in the Amazon-Cerrado transition: A multi-year, state-wide assessment of municipality-aggregated surveillance data

Brito¹,

Gorla

Diotaiuti³

et al. 2017

PLoS Negl Trop Dis

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“…French Guiana is an 84,000 km 2 overseas department and region of France bordered by Brazil and Suriname. Because of its many different ecosystems, particularly a dense rainforest, French Guiana is a biodiversity hotspot and one of the 21 areas where Chagas disease is endemic [ 10 ]. Among the 27 described species of triatomines in this area, many are invasive species.…”

Section: Introductionmentioning

confidence: 99%

“…That is to say that many of them temporarily leave their sylvatic or peridomestic dwellings in order to invade houses. The main vector community of French Guiana comprises highly anthropophilic bugs belonging to the Panstrongylus , Rhodnius and Eratyrus genera [ 10 ]. They accidentally feed on humans [ 11 ] and also on potentially infected animals since they easily feed on domestic animals or wild mammals.…”

Section: Introductionmentioning

confidence: 99%

Detection of a Potential New Bartonella Species “Candidatus Bartonella rondoniensis” in Human Biting Kissing Bugs (Reduviidae; Triatominae)

et al. 2017

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BackgroundAmong the Reduviidae family, triatomines are giant blood-sucking bugs. They are well known in Central and South America where they transmit Trypanosoma cruzi to mammals, including humans, through their feces. This parasitic protozoan is the causative agent of Chagas disease, a major public health issue in endemic areas. Because of the medical and economic impact of Chagas disease, the presence of other arthropod-borne pathogens in triatomines was rarely investigated.Methodology/Principal findingsIn this study, seven triatomines species involved in the transmission of T. cruzi were molecularly screened for the presence of known pathogens generally associated with arthropods, such as Rickettsia, Bartonella, Anaplasmataceae, Borrelia species and Coxiella burnetii. Of all included triatomine species, only Eratyrus mucronatus specimens tested positive for Bartonella species for 56% of tested samples. A new genotype of Bartonella spp. was detected in 13/23 Eratyrus mucronatus specimens, an important vector of T. cruzi to humans. This bacterium was further characterized by sequencing fragments of the ftsZ, gltA and rpoB genes. Depending on the targeted gene, this agent shares 84% to 91% of identity with B. bacilliformis, the agent of Carrion’s disease, a deadly sandfly-borne infectious disease endemic in South America. It is also closely related to animal pathogens such as B. bovis and B. chomelii.ConclusionsAs E. mucronatus is an invasive species that occasionally feeds on humans, the presence of potentially pathogenic Bartonella-infected bugs could present another risk for human health, along with the T. cruzi issue.

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“…However, it is important to mention that the taxonomic status of this species has been controversial. Some authors have cited this species as P. herreri (1)(2)(3)(4)(5) , while others have referred to this species as P. lignarius (6)(7)(8)(9)(10) . Therefore, there is a clear lack of consensus regarding this matter, which reinforces the significance of the question raised by the comments on our study.Another interesting aspect posed by the comments refers to the total number of species of triatomines identified so far (152 species).…”

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confidence: 99%

Panstrongylus herreri and its ability to develop under fluctuating environmental conditions

Junior

Mendes

Anhê

et al. 2017

Rev. Soc. Bras. Med. Trop.

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We appreciate the comments on the Letter to the Editor in the RSBMT regarding our study published in Rev Soc Bras Med Trop. 2017;50(1): 121-5. We also support and understand the importance of using the correct taxonomic status of each species, in this case, using Panstrongylus lignarius instead of P. herreri. However, it is important to mention that the taxonomic status of this species has been controversial. Some authors have cited this species as P. herreri (1)(2)(3)(4)(5) , while others have referred to this species as P. lignarius (6)(7)(8)(9)(10) . Therefore, there is a clear lack of consensus regarding this matter, which reinforces the significance of the question raised by the comments on our study.Another interesting aspect posed by the comments refers to the total number of species of triatomines identified so far (152 species). Our group strongly supports the use of proper nomenclature and agrees with the current species delimitation. In this context, we believe that the use of the adverb approximately, which denotes that a quantity (number/time) is nearly accurate, to describe the number of species in our study should be avoided in future publications to prevent any misunderstandings. REFERENCES1. Tartarotti E, Ceron CR. Ribosomal DNA ITS-1 intergenic spacer polymorphism in triatomines (Triatominae, Heteroptera). Biochem Genet. 2005;43(7-8):365-73. 2. da Rosa JA, Mendonca VJ, Rocha CS, Gardim S, Cilense M. Characterization of the external female genitalia of six species of Triatominae (Hemiptera: Reduviidade) by scanning electron microscopy. Mem Inst Oswaldo Cruz. 2010;105(3):286-92. 3. Alroy KA, Huang C, Gilman RH, Quispe-Machaca VR, Marks MA, Ancca-Juarez J, et al. Prevalence and transmission of Trypanosoma cruzi in people of rural communities of the High Jungle of Northern Peru. PLoS Negl Trop Dis. 2015;9(5):e0003779. 4. Montandon CE, Barros E, Vidigal PM, Mendes MT, Anhê AC, de Oliveira Ramos HJ, et al. Development of data for the identification and characterization of proteins found in Rhodnius prolixus, Triatoma lecticularia and Panstrongylus herreri. Data Brief. 2016;7:844-7. 5. Montandon CE, Barros E, Vidigal PM, Mendes MT, Anhê AC, de Oliveira Ramos HJ, et al. Comparative proteomic analysis of the saliva of the Rhodnius prolixus, Triatoma lecticularia and Panstrongylus herreri triatomines reveals a high interespecific functional biodiversity. Insect Biochem Mol Biol. 2016;71:83-90. 6. Berenger JM, Blanchet D. A new species of the genus Panstrongylus

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Amazonian Triatomine Biodiversity and the Transmission of Chagas Disease in French Guiana: In Medio Stat Sanitas

Cited by 12 publications

References 94 publications

Drivers of house invasion by sylvatic Chagas disease vectors in the Amazon-Cerrado transition: A multi-year, state-wide assessment of municipality-aggregated surveillance data

Drivers of house invasion by sylvatic Chagas disease vectors in the Amazon-Cerrado transition: A multi-year, state-wide assessment of municipality-aggregated surveillance data

Detection of a Potential New Bartonella Species “Candidatus Bartonella rondoniensis” in Human Biting Kissing Bugs (Reduviidae; Triatominae)

Panstrongylus herreri and its ability to develop under fluctuating environmental conditions

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