Taxonomic status of Panstrongylus herreri Wygodzinsky, 1948 and the number of Chagas disease vectors

Oliveira, Jader de; Alevi, Kaio Cesar Chaboli

doi:10.1590/0037-8682-0125-2017

Cited by 32 publications

(30 citation statements)

References 12 publications

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“…Among the transmission mechanisms of T. cruzi, classic vector transmission remains the most important parasite transmission route to humans because of the natural distribution of T. cruzi in triatomine species adapted to domestic or peridomestic environments. Of the 155 species of triatomine described (Hemiptera: Reduviidae), including two fossil species, more than 60 are autochthonous in Brazil [3][4][5] . However, vector competence which includes the ability to adapt and colonize the domiciliary environment and the consequent infection of humans and domestic animals is limited to only some species 6 .…”

Section: Introductionmentioning

confidence: 99%

Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Barbosa-Silva

Souza

Diotaiuti

et al. 2019

Rev. Soc. Bras. Med. Trop.

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Introduction: The ecoepidemiological situation in the State of Rio Grande do Norte, Brazil is characterized by frequent invasion and colonization of domiciliary units (DUs) by several triatomine species, with high rates of natural infection by Trypanosoma cruzi. Methods: We evaluated the possibility of vector transmission of T. cruzi based on records of the occurrence of domiciled triatomines collected by the Secretariat of State for Public Health from 2005 to 2015. During this period, 67.7% (113/167) of municipalities conducted at least one active search and 110 recorded the presence of insects in DUs.These activities were more frequent in municipalities considered to have a high and medium-level risk of T. cruzi transmission. Results: Of 51,569 captured triatomines, the most common species were Triatoma brasiliensis (47.2%) and T. pseudomaculata (40.2%). Colonies of T. brasiliensis, T. pseudomaculata, T. petrocchiae, Panstrongylus lutzi, and Rhodnius nasutus were also recorded in the intradomicile and peridomicile. Natural infection by trypanosomatids was detected in 1,153 specimens; the highest rate was found in R. nasutus (3.5%), followed by T. brasiliensis (2.5%) and T. pseudomaculata (2.4%). There have been high levels of colonization over the years; however, not all infested DUs have been sprayed. Conclusions: This is the first report of intradomicile and peridomicile colonization by P. lutzi. These results demonstrate the risk of new cases of infection by T. cruzi and reinforce the need for continuous entomological surveillance in the State of Rio Grande do Norte.

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Section: Introductionmentioning

confidence: 99%

Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Barbosa-Silva

Souza

Diotaiuti

et al. 2019

Rev. Soc. Bras. Med. Trop.

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“…Although unrecognized by the International Code of Zoological Nomenclature, for functionality or for better organization, some of the species included in the triatomine group have been clustered into specific complexes (Usinger et al 1966, Lent and Wygodzinsky 1979, Galíndez et al 1994, ICNZ 1999, Carcavallo et al 2000, 2001, Carcavallo and Jurberg 2000, Alevi et al 2016). The set of species that is grouped in a given species complex has been based on varied rationalities, but the most popular one recommends that it must be formed by a monophyletic group of species (Justi et al 2014, Oliveira et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Triatoma brasiliensis species complex: characterization of the external female genitalia

Oliveira

Alevi

Almeida

et al. 2020

Journal of Vector Ecology

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The Triatoma brasiliensis complex is composed of six species (Triatoma bahiensis, T. juazerensis, T. lenti, T. melanica, T. petrocchiae, and T. sherlocki) and two subspecies (T. brasiliensis brasiliensis and T. b. macromelasoma). Phylogenetic studies have shown that it is a monophyletic group, but the morphological relationships among the members can be better understood. We applied a tool of high resolution based on morphology to identify details that characterize the female genitals for each member of this group. The external genital structures of five to fifteen females of each taxon were analyzed. Insects had their abdomen transversely cut to separate the last abdominal segments, and representative illustrations obtained via scanning electron microscopy (SEM) are shown. Observations were performed in the dorsal and the ventral views. The morphological characterization of female external genitalia allowed a differentiation of each species/subspecies. The subspecies T. b. brasiliensis and T. b. macromelasoma were the most similar. On the other hand, dorsal view of structures evidenced some unique characteristics for T. petrocchiae and T. sherlocki. Regarding these structures for T. petrocchiae, the differentiation was in accordance with molecular studies, since this species exhibits the highest genetic distances in relation to other species of T. brasiliensis complex.

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“…Currently, 154 triatomine species, grouped into 19 genera [3][4][5] , have been identified worldwide. Of these, over 30 species, distributed among nine genera, occur within the Amazon region 6 In January 2019, using a dissection technique, triatomines were collected from four Attalea butyracea palm trees (commonly referred to as Jaci or coquinho da mata in the Amazon region) in a rural area of the municipality of Guajará, Amazonas, near the river Juruá (latitude 07º 30' 87''S, longitude 72º31'17''W).…”

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confidence: 99%

First report of Rhodnius montenegrensis (Hemiptera, Reduviidae, Triatominae) in Amazonas, Brazil

Madeira

Menezes

Jesus

et al. 2020

Rev. Soc. Bras. Med. Trop.

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Introduction: Triatomines are hematophagous insects of epidemiological importance because they are vectors of Chagas disease. We present here the first report of Rhodnius montenegrensis in Amazonas, Brazil. Methods: Triatomines were collected from Attalea butyracea palm trees in the municipality of Guajará. Results: Two adult female R. montenegrensis specimens were identified. Conclusions: The present study confirms that the number of triatomine species within the Amazon has increased from 10 to 11, and the number of Brazilian states with R. montenegrensis has increased from two to three.

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Taxonomic status of Panstrongylus herreri Wygodzinsky, 1948 and the number of Chagas disease vectors

Cited by 32 publications

References 12 publications

Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Synanthropic triatomines (Hemiptera: Reduviidae): infestation, colonization, and natural infection by trypanosomatids in the State of Rio Grande do Norte, Brazil

Triatoma brasiliensis species complex: characterization of the external female genitalia

First report of Rhodnius montenegrensis (Hemiptera, Reduviidae, Triatominae) in Amazonas, Brazil

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