Rhodnius paraensis espécie nova do Estado do Pará, Brasil (Hemiptera, Reduviidae, Triatominae) ()

Sherlock, Ítalo Rodrigues de Araújo; Guitton, Neide; Miles, Michael A.

doi:10.1590/1809-43921977071071

Cited by 12 publications

(8 citation statements)

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“…Thus, for example, Panstrongylus lignarius has nymphs in arboreal tree holes and adults perfectly camouflaged to roam on the trunks of their elected tree species. Using spool-and-line mammal tracking a new species, Rhodnius paraensis , was discovered in nests of the arboreal rodent, Echimys chrysurus (Sherlock et al 1977). The sporadic cases of Chagas disease that do occur in the Amazon region are thus not due to domestic triatomine colonies but are caused by adult bugs attracted to dwellings, especially to artificial light.…”

Section: Enzootic Transmission Of Trypanosoma Cruzi In the Amazon Regionmentioning

confidence: 99%

The molecular epidemiology and phylogeography of Trypanosoma cruzi and parallel research on Leishmania: looking back and to the future

et al. 2009

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SUMMARYTrypanosoma cruzi is the protozoan agent of Chagas disease, and the most important parasitic disease in Latin America. Protozoa of the genus Leishmania are global agents of visceral and cutaneous leishmaniasis, fatal and disfiguring diseases. In the 1970s multilocus enzyme electrophoresis demonstrated that T. cruzi is a heterogeneous complex. Six zymodemes were described, corresponding with currently recognized lineages, TcI and TcIIa-e – now defined by multiple genetic markers. Molecular epidemiology has substantially resolved the phylogeography and ecological niches of the T. cruzi lineages. Genetic hybridization has fundamentally influenced T. cruzi evolution and epidemiology of Chagas disease. Genetic exchange of T. cruzi in vitro involves fusion of diploids and genome erosion, producing aneuploid hybrids. Transgenic fluorescent clones are new tools to elucidate molecular genetics and phenotypic variation. We speculate that pericardial sequestration plays a role in pathogenesis. Multilocus sequence typing, microsatellites and, ultimately, comparative genomics are improving understanding of T. cruzi population genetics. Similarly, in Leishmania, genetic groups have been defined, including epidemiologically important hybrids; genetic exchange can occur in the sand fly vector. We describe the profound impact of this parallel research on genetic diversity of T. cruzi and Leishmania, in the context of epidemiology, taxonomy and disease control.

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Section: Enzootic Transmission Of Trypanosoma Cruzi In the Amazon Regionmentioning

confidence: 99%

The molecular epidemiology and phylogeography of Trypanosoma cruzi and parallel research on Leishmania: looking back and to the future

et al. 2009

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“…Moreover, some authors consider R. milesi to be a R. neglectus variant from southeastern Amazonia (Abad-Franch et al, 2013). Otherwise, only a few specimens have been collected for R. paraensis first described as R. domesticus (Sherlock et al, 1977) and R. amazonicus close to R. pictipes but this latter species was revalidated by Bérenger and Pluot-Sigwalt (2002). Finally, the species-specific status for two species is questionable and difficult to deepen since R. zeledoni reported as morphologically close to R. paraensis was described from only one dead and dried male specimen (Jurberg et al, 2009), and R. dalessandroi is actually known only from its published description (Carcavallo and Barreto, 1976).…”

Section: Introductionmentioning

confidence: 99%

Phylogenomics for Chagas Disease Vectors of the Rhodnius Genus (Hemiptera, Triatominae): What We Learn From Mito-Nuclear Conflicts and Recommendations

et al. 2022

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We provide in this study a very large DNA dataset on Rhodnius species including 36 samples representing 16 valid species of the three Rhodnius groups, pictipes, prolixus and pallescens. Samples were sequenced at low-depth with whole-genome shotgun sequencing (Illumina technology). Using phylogenomics including 15 mitochondrial genes (13.3 kb), partial nuclear rDNA (5.2 kb) and 51 nuclear protein-coding genes (36.3 kb), we resolve sticking points in the Rhodnius phylogeny. At the species level, we confirmed the species-specific status of R. montenegrensis and R. marabaensis and we agree with the synonymy of R. taquarussuensis with R. neglectus. We also invite to revisit the species-specific status of R. milesi that is more likely R. nasutus. We proposed to define a robustus species complex that comprises the four close relative species: R. marabaensis, R. montenegrensis, R. prolixus and R. robustus. As Psammolestes tertius was included in the Rhodnius clade, we strongly recommend reclassifying this species as R. tertius. At the Rhodnius group level, molecular data consistently supports the clustering of the pictipes and pallescens groups, more related to each other than they are to the prolixus group. Moreover, comparing mitochondrial and nuclear tree topologies, our results demonstrated that various introgression events occurred in all the three Rhodnius groups, in laboratory strains but also in wild specimens. We demonstrated that introgressions occurred frequently in the prolixus group, involving the related species of the robustus complex but also the pairwise R. nasutus and R. neglectus. A genome wide analysis highlighted an introgression event in the pictipes group between R. stali and R. brethesi and suggested a complex gene flow between the three species of the pallescens group, R. colombiensis, R. pallescens and R. ecuadoriensis. The molecular data supports also a sylvatic distribution of R. prolixus in Brazil (Pará state) and the monophyly of R. robustus. As we detected extensive introgression events and selective pressure on mitochondrial genes, we strongly recommend performing separate mitochondrial and nuclear phylogenies and to take advantages of mito-nuclear conflicts in order to have a comprehensive evolutionary vision of this genus.

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“…, 2001). The genus Rhodnius currently has 16 recognized species, including Rhodnius dalessandroi Carcavallo & Barreto, 1976 and Rhodnius paraensis Sherlock et al. , 1977, neither of which has been collected since its original description.…”

Section: Introductionmentioning

confidence: 99%

“…Three additional species have since been described: R. stali (Lent et al, 1993), Rhodnius colombiensis (Moreno et al, 1999) and Rhodnius milesi (Valente et al, 2001). The genus Rhodnius currently has 16 recognized species, including Rhodnius dalessandroi Carcavallo & Barreto, 1976 and Rhodnius paraensis Sherlock et al, 1977, neither of which has been collected since its original description.…”

Section: Introductionmentioning

confidence: 99%

Systematics and biogeography of Rhodniini (Heteroptera: Reduviidae: Triatominae) based on 16S mitochondrial rDNA sequences

Paula

Diotaiuti

Galvão

2006

Journal of Biogeography

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Aim The tribe Rhodniini is one of six comprising the subfamily Triatominae (Heteroptera: Reduviidae), notorious as blood-sucking household pests and vectors of Trypanosoma cruzi throughout Latin America. The human and economic cost of this disease in the American tropics is considerable, and these bugs are unquestionably of great importance to man. Studies of the evolution, phylogeny, biogeography, ecology, physiology and behaviour of the Rhodniini are needed to help improve existing Chagas' disease control programmes. The objective of the study reported here was to propose biogeographical hypotheses to explain the modern geographical distribution of the species of Rhodniini. Location Neotropical region.Methods We employed mitochondrial rDNA sequences (16S) currently available in GenBank to align sequences of Rhodniini species using ClustalX. The analyses included 16S sequences from predatory reduviid subfamilies (Stenopodainae, Ectrichodiinae, Harpactorinae, Reduviinae and Salyavatinae) present in GenBank as an outgroup. Cladistic analysis used the program PAUP to derive trees based on maximum parsimony (MP) and maximum likelihood (ML). Known distribution data for Rhodniini species were obtained from reviews and plotted on maps of South and Central America using the program iMap. An area cladogram was derived from the cladistic result to show the historical connections among the studied taxa and the endemic areas. The program TreeMap (Jungle Edition) was used to deduce taxon-area associations where the optimal solutions to explain the biogeographical hypothesis of the Rhodniini in the Neotropics were those with lowest total cost.Results Parsimony and maximum-likelihood analysis of 16S rDNA sequences included 14 species of Rhodniini, as well as five species of predatory Reduviidae representing five of the predatory subfamilies. Tanglegrams were used to show the relationship between the Neotropical areas of endemism and Rhodniini species. When TreeMap with codivergence (vicariance) events were weighted as 0 and duplication (sympatry), lineage losses (extinction) and host switching (dispersal) were all weighted as 1, 20 scenarios were found to explain the biogeographical history of Rhodniini in the Neotropical region. Twelve of the optimal solutions with the lowest total cost were used to explain the biogeography of the Rhodniini in the Neotropics. These optimal reconstructions require six vicariance events, 20 duplications (sympatry), at least three dispersals, and at least one extinction event.Main conclusions The Rhodniini have a complex biogeographical history that has involved vicariance, duplications (sympatry), dispersal and extinction events. The main geological events affecting the origin and diversification of the Rhodniini in the Neotropics were (1) uplift of the

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Rhodnius paraensis espécie nova do Estado do Pará, Brasil (Hemiptera, Reduviidae, Triatominae) ()

Cited by 12 publications

References 0 publications

The molecular epidemiology and phylogeography of Trypanosoma cruzi and parallel research on Leishmania: looking back and to the future

The molecular epidemiology and phylogeography of Trypanosoma cruzi and parallel research on Leishmania: looking back and to the future

Phylogenomics for Chagas Disease Vectors of the Rhodnius Genus (Hemiptera, Triatominae): What We Learn From Mito-Nuclear Conflicts and Recommendations

Systematics and biogeography of Rhodniini (Heteroptera: Reduviidae: Triatominae) based on 16S mitochondrial rDNA sequences

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