Molecular phylogeography of the Chagas’ disease vector Triatoma infestans in Argentina

Rosas, Alicia R. Pérez de; Segura, Elsa L.; Garcia, Beatríz A.

doi:10.1038/hdy.2010.159

Cited by 15 publications

(12 citation statements)

References 36 publications

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“…Two initial dispersal routes of T. infestans were hypothesized, one through the Andean highlands of Bolivia and Peru and another through the lowlands of Argentina, Paraguay, Uruguay, Brazil, and Chile. Both these primary lineages are corroborated by independent nuclear, mitochondrial, and multilocus microsatellite studies (Monteiro et al 1999 ;Piccinali et al 2009 ;Pérez-de-Rosas et al 2011 ). Torres-Pérez et al ( 2010 ) suggested that T. infestans would have originated outside of Bolivia, but they also recognized the Andean and non-Andean lineages with estimated divergence time around 0.388-0.588 mya, agreeing globally with the estimate dates found by Bargues et al ( 2006 ).…”

Section: Phylogeographysupporting

confidence: 80%

Classification and Biogeography of Neotropical True Bugs

Ferrari

Barão

Bianchi

et al. 2015

True Bugs (Heteroptera) of the Neotropics

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A review of Heteroptera classifi cation, biogeography, and phylogeography is presented. The use of molecular data signifi cantly expanded the knowledge of phylogenetic relationships among and within heteropteran infraorders. However, taxa historically less studied continue to receive little attention. Promising, new molecular approaches with increased genetic markers and broader taxon sampling, as well as new morphological approaches (e.g., microtomography), are the future for more stable classifi cations and a better comprehension of the heteropteran evolutionary history, but their application is still incipient. A non-exhaustive overview of studies about Neotropical heteropteran biogeography is made and discussed, including those about intercontinental connections and regional distribution patterns. The most comprehensible studies, and more promising area, seem to be those focused on distribution patterns, especially employing macroecological methods, and trying to elucidate what are the major factors responsible for the distribution of the group in the Neotropics. Finally, we present an overview of phylogeographic studies involving Neotropical Heteroptera. It is clear that the best biogeographic and phylogeographic studied groups are those with medical and economical importance (e.g., Reduviidae and Pentatomidae).

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Section: Phylogeographysupporting

confidence: 80%

Classification and Biogeography of Neotropical True Bugs

Ferrari

Barão

Bianchi

et al. 2015

True Bugs (Heteroptera) of the Neotropics

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“…Analyses based on these markers strongly supported the existence of some type of stratification in T. infestans populations and support the hypothesis of vector population recovery from survivors of the insecticide-treated areas, highlighting the value of population genetic analyses in assessing the effectiveness of Chagas disease vector control programs. [1][2][3][4][5][6][7] Microsatellites have been widely used as genetic markers although drawbacks for their use are the time and cost required to characterize them. Intersimple sequence repeats (ISSRs) have also been widely used as genetic markers because they permit the detection of DNA variation without the need to isolate and sequence specific DNA fragments.…”

Section: Introductionmentioning

confidence: 99%

Application of Inter-Simple Sequence Repeat Markers in the Analysis of Populations of the Chagas Disease Vector Triatoma infestans (Hemiptera, Reduviidae)

Rosas¹,

Restelli²,

Fernández³

et al. 2017

The American Society of Tropical Medicine and Hygiene

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Abstract. Here we apply inter-simple sequence repeat (ISSR) markers to explore the fine-scale genetic structure and dispersal in populations of Triatoma infestans. Five selected primers from 30 primers were used to amplify ISSRs by polymerase chain reaction. A total of 90 polymorphic bands were detected across 134 individuals captured from 11 peridomestic sites from the locality of San Martín (Capayán Department, Catamarca Province, Argentina). Significant levels of genetic differentiation suggest limited gene flow among sampling sites. Spatial autocorrelation analysis confirms that dispersal occurs on the scale of ∼469 m, suggesting that insecticide spraying should be extended at least within a radius of ∼500 m around the infested area. Moreover, Bayesian clustering algorithms indicated genetic exchange among different sites analyzed, supporting the hypothesis of an important role of peridomestic structures in the process of reinfestation.

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“…Interestingly, in areas where T. infestans has extensive sylvan populations, gene flow was also restricted among these sylvan populations and largely absent between the sylvan and domestic populations (Richer et al, 2007 and Table 2). Recent analysis of genomic (Perez de Rosas et al, 2011) and mtDNA (Torres-Perez et al, 2011) both support the hypothesis of two independent migration events of T. infestans in South America, and confirmed the existence of two distinct lineages.…”

Section: Genetic Diversitymentioning

confidence: 61%

Genetics and evolution of triatomines: from phylogeny to vector control

et al. 2011

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Triatomines are hemipteran bugs acting as vectors of the protozoan parasite Trypanosoma cruzi. This parasite causes Chagas disease, one of the major parasitic diseases in the Americas. Studies of triatomine genetics and evolution have been particularly useful in the design of rational vector control strategies, and are reviewed here. The phylogeography of several triatomine species is now slowly emerging, and the struggle to reconcile the phenotypic, phylogenetic, ecological and epidemiological species concepts makes for a very dynamic field. Population genetic studies using different markers indicate a wide range of population structures, depending on the triatomine species, ranging from highly fragmented to mobile, interbreeding populations. Triatomines transmit T. cruzi in the context of complex interactions between the insect vectors, their bacterial symbionts and the parasites; however, an integrated view of the significance of these interactions in triatomine biology, evolution and in disease transmission is still lacking. The development of novel genetic markers, together with the ongoing sequencing of the Rhodnius prolixus genome and more integrative studies, will provide key tools to expanding our understanding of these important insect vectors and allow the design of improved vector control strategies.

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Molecular phylogeography of the Chagas’ disease vector Triatoma infestans in Argentina

Cited by 15 publications

References 36 publications

Classification and Biogeography of Neotropical True Bugs

Classification and Biogeography of Neotropical True Bugs

Application of Inter-Simple Sequence Repeat Markers in the Analysis of Populations of the Chagas Disease Vector Triatoma infestans (Hemiptera, Reduviidae)

Genetics and evolution of triatomines: from phylogeny to vector control

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