Epidemiological status of kissing-bugs in South East Asia: A preliminary assessment

Dujardin, Jean‐Pierre; Thi, Khoa Pham; Xuan, Lam Truong; Panzera, Francisco; Pita, Sebastián; Schofield, C.J.

doi:10.1016/j.actatropica.2015.06.022

Cited by 27 publications

(24 citation statements)

References 34 publications

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“…As we know, the vast majority of species (95%) of triatomines are limited to the new world; there were only a few species belonging to the genus Triatoma and its sister group Linshcosteus distributed in the old world [ 14 , 23 ]. Among them, T. rubrofasciata is known to currently be widely distributed [ 8 ].…”

Section: Discussionmentioning

confidence: 99%

“…3 ); these strains belonged to an old world clade and showed monophyly [ 24 ]. The current consensus is that the Triatominae have relatively recent origins in the Americas and that the old world species represent derivatives from an American form [ 23 ]. To date, the question of the mode of dispersal of T. rubrofasciata to the old world and to other continents is natural and unanswered [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

“…To date, the question of the mode of dispersal of T. rubrofasciata to the old world and to other continents is natural and unanswered [ 24 ]. One hypothesis is that T. rubrofasciata was accidentally carried on ships by infested mice from Latin America to elsewhere [ 23 , 24 ]. Thus, more data was needed to add to the analysis of the derivatives of T. rubrofasciata .…”

Section: Discussionmentioning

confidence: 99%

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First records of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera, Reduviidae) in Foshan, Guangdong Province, Southern China

et al. 2017

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BackgroundTriatomines, also known as kissing bugs, which are found throughout the world and especially in Latin America, are well known natural vectors that transmit American trypanosomiasis, also called Chagas disease. In China, the presence of two species of Triatoma (Triatoma rubrofasciata and T. sinica) was recorded in the past. Due to the growing population and the increasing risk of the global spread of Chagas disease, triatomines became a potential public health nuisance, and in 2016, we started monitoring triatomine activities in southern China.MethodsTriatomine specimens were collected by the National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, and identified by their morphological characteristics under a dissecting microscope. In addition to morphological analysis, the genomic DNA of the specimens was extracted, and the mitochondrial 16S rRNA, the cytochrome b (CytB) gene and the nuclear ribosomal 28S rRNA gene were PCR-amplified to analyze and confirm the species genetically.ResultsOne female adult insect and one male adult insect were collected in a dwelling in the rural area of Shunde County, Foshan City, Guangdong Province, China (22°42′44.63″N, 113°08′45.34″E). The results from the morphological and genetic analyses indicated that these triatomines were T. rubrofasciata.ConclusionsThis is the first time that the occurrence of T. rubrofasciata has been confirmed in Foshan City, Guangdong Province in southern China. Further studies are needed to reach a clearer understanding of the ecology of this species of triatomine, since it has been found to be naturally infected by Trypanosoma cruzi and T. conorhini and there is evidence of its domiciliation capabilities.Electronic supplementary materialThe online version of this article (doi:10.1186/s40249-017-0342-y) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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First records of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera, Reduviidae) in Foshan, Guangdong Province, Southern China

et al. 2017

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“…Geographical origin and cytogenetic traits of the Triatoma species analysed are detailed in Table 1 . These species were selected by their different number of autosomes (18, 20 and 22), male sex systems (XY and X 1 X 2 Y), and differences in the amount and chromosomal location of autosomal heterochromatin [ 15 , 22 – 25 ].…”

Section: Methodsmentioning

confidence: 99%

Holocentric chromosome evolution in kissing bugs (Hemiptera: Reduviidae: Triatominae): diversification of repeated sequences

et al. 2017

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BackgroundThe analysis of the chromosomal and genome evolution in organisms with holocentric chromosomes is restricted by the lack of primary constriction or centromere. An interesting group is the hemipteran subfamily Triatominae, vectors of Chagas disease, which affects around 6 to 7 million people worldwide. This group exhibits extensive variability in the number and chromosomal location of repeated sequences such as heterochromatin and ribosomal genes. This paper tries to reveal the significant differences of the repeated sequences among Triatoma species through the use of genomic DNA probes.MethodsWe analysed the chromosomal distribution and evolution of repeated sequences in Triatoma species by genomic in situ hybridization (GISH) using genomic DNA probes from two North American Triatoma species. These genomic probes were hybridized both on their own chromosomes and on other Triatoma species from North and South America, with different amounts and chromosome location of C-heterochromatin. The results were compared with those previously described using South American Triatoma genomic probes.ResultsWe observed two chromosomal hybridization patterns: (i) very intense hybridization signals concentrated on specific chromosomal regions or particular chromosomes; and (ii) lower intensity hybridization signals dispersed along all chromosomes. Self-GISH on T. rubrofasciata and T. dimidiata chromosomes presented strong hybridization signals on all C-heterochromatin regions. However, when we perform genomic cross-hybridizations, only strong signals are detected on the Y chromosome, leaving the C-heterochromatic autosomal regions unmarked.ConclusionsWe confirm that repeated DNA of the Y chromosome is shared among Triatoma species and probably represents an ancestral character of the Triatomini tribe. On the contrary, autosomal heterochromatic regions are constituted by species-specific DNA repeats, most probably satDNA families, suggesting that Triatoma speciation involved the amplification of diverse types of autosomal repeats. Molecular characterization of principal repetitive DNAs seems to be an appropriate approach to infer evolutionary relationships in triatomines.

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“…The subfamily comprises around 146 species, 15 genera and 5 tribes Ayala, 2009;Da Rosa et al, 2012;Frías-Lasserre, 2010;Gonçalves et al, 2013;Jurberg et al, 2009;Schofield and Galvão, 2009). Most of these are distributed throughout the Neotropical and subtropical zones, with the exception of some Triatoma species and the Linshcosteus genus, which are also present in East Asia, where the epidemiological relevance of these insects has recently been increasing (Dujardin et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

The nuclear elongation factor-1α gene: a promising marker for phylogenetic studies of Triatominae (Hemiptera: Reduviidae)

Díaz

Triana-Chávez

Gómez-Palacio

2016

Infection, Genetics and Evolution

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Epidemiological status of kissing-bugs in South East Asia: A preliminary assessment

Cited by 27 publications

References 34 publications

First records of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera, Reduviidae) in Foshan, Guangdong Province, Southern China

First records of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera, Reduviidae) in Foshan, Guangdong Province, Southern China

Holocentric chromosome evolution in kissing bugs (Hemiptera: Reduviidae: Triatominae): diversification of repeated sequences

The nuclear elongation factor-1α gene: a promising marker for phylogenetic studies of Triatominae (Hemiptera: Reduviidae)

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