Rhodnius barretti, a new species of Triatominae (Hemiptera: Reduviidae) from western Amazonia

Abad‐Franch, Fernando; Pavan, Márcio G.; Jaramillo-O, Nicolás; Palomeque, Francisco S.; Dale, Carolina; Chaverra, Duverney; Monteiro, Fernando A.

doi:10.1590/0074-0276130434

Cited by 72 publications

(83 citation statements)

References 42 publications

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“…The 148 species currently described (Abad-Franch et al, 2013;Alevi et al, 2013a;Jurberg et al, 2013;Poinar Jr., 2013) are potential vectors of the protozoan Trypanosoma cruzi, the etiologic agent of Chagas disease. Triatomines are also of biological interest because their cells have several peculiarities in comparison to cells of other eukaryotes, such as holocentric chromosomes (Panzera et al, 1996), inverted meiosis for sex chromosomes (Gómez-Palacio et al, 2008), and persistence of nucleolar material during meiosis (Tartarotti and Azeredo-Oliveira, 1999;Alevi et al, 2014a).…”

Section: Introductionmentioning

confidence: 99%

Description of the diploid chromosome set of Triatoma pintodiasi (Hemiptera, Triatominae)

Alevi¹,

Moreira

Jurberg

et al. 2016

Genet. Mol. Res.

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ABSTRACT. Triatoma pintodiasi has been described and recently grouped in the Rubrovaria subcomplex. T. pintodiasi was initially compared to T. carcavalloi by staining and subsequently identified as T. circummaculata. However, after thorough examination, it was observed to be a cryptic species of T. circummaculata, and was described based on morphological features, morphometric data, and biochemical patterns of hemolymph. Thus, this paper aims to describe the karyotype of, and spermatogenesis in, T. pintodiasi, in order to elucidate the reproductive biology and taxonomy of the species. Sex chromosomes of T. pintodiasi formed a heteropyknotic chromocenter, and compaction of chromatin was observed during prophase. However, in contrast to observations in T. carcavalloi and T. circummaculata, in T. pintodiasi it was observed individualization of the sex chromosomes. The diploid chromosome set of the species 2n = 22 (20A + XY) is described through analysis of metaphases I and II. Initial cytogenetic characteristics of T. pintodiasi are described and the observed differences in the chromocenter

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Section: Introductionmentioning

confidence: 99%

Description of the diploid chromosome set of Triatoma pintodiasi (Hemiptera, Triatominae)

Alevi¹,

Moreira

Jurberg

et al. 2016

Genet. Mol. Res.

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“…Forty-three species are exclusively distributed within Brazil. [5][6][7][8][9][10][11] The state of Bahia in northeastern Brazil has the largest number of species (25 spp.). 8 In Brazil, the National Chagas Disease Control Program (PCDCh) was implemented from 1975 to 1983, when Triatoma infestans infested households in 700 cities across 12 Brazilian states.…”

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confidence: 99%

Triatominae Survey (Hemiptera: Reduviidae: Triatominae) in the South-Central Region of the State of Bahia, Brazil Between 2008 and 2013

Mendonça¹,

Oliveira²,

Rimoldi³

et al. 2015

The American Society of Tropical Medicine and Hygiene

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Abstract. Triatomine surveillance in rural areas, artificial ecotypes, and natural ecotopes of the cities of Caturama, Ibipitanga, Macaú bas, and Seabra in the south-central region of the Brazilian state of Bahia was carried out between 2008 and 2013. Natural infection by Trypanosoma cruzi was evaluated in the specimens collected to monitor vectors of Chagas disease. A total of 1,357 specimens were collected, and four species were identified: Triatoma sordida (83%), Triatoma lenti (16.4%), Triatoma pseudomaculata (0.5%), and Panstrongylus geniculatus (0.1%). Triatoma sordida was found in four cities, only 0.7% in intradomiciliary environments. Triatoma lenti was found only in Macaú bas; 8.5% were found in intradomiciliary environments, 88.3% in peridomiciliary environments, and 3.1% in sylvatic environments. Natural infection by T. cruzi was 0.5% for T. sordida and 3.1% T. lenti. All of these cases were found in peridomiciliary environments of Macaú bas. As the results show, triatomines were found in intradomiciliary environments in three cities that were surveyed in the south-central region of the state of Bahia. Thus, an epidemiologic survey should be performed to avoid the risk of transmission to the population.Chagas disease, also known as American trypanosomiasis, is caused by the protozoan parasite Trypanosoma cruzi (Kinetoplastida: Trypanosomatidae). It is most frequently transmitted by the infected feces of blood-sucking triatomine bugs (Hemiptera: Reduviidae: Triatominae).

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“…Then, they become infective to the vertebrate host through the bite of the insect vector (1)(2)(3). Rhodnius specimens are particularly susceptible to infection with T. rangeli; 13 of 19 Rhodnius species were reported to be infected with this parasite (4,5).…”

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Susceptibilidad de diferentes especies de Rhodnius (Hemiptera, Reduviidae, Triatominae) a una cepa brasileña de Trypanosoma rangeli (SC58/KP1-)

et al. 2014

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Introduction: Specific host-parasite associations have been detected experimentally and suggest that triatomines of the genus Rhodnius act as biological filters in the transmission of Trypanosoma rangeli. Objective: To analyze the susceptibility of four Rhodnius species (Rhodnius robustus, Rhodnius neglectus, Rhodnius nasutus and Rhodnius pictipes) to a Brazilian strain of T. rangeli (SC-58/KP1-). Materials and methods:We selected thirty nymphs of each species, which were fed on blood infected with T. rangeli. Periodically, samples of feces and hemolymph were analyzed. Triatomines with T. rangeli in their hemolymph were fed on mice to check for transmission by bites. Later, the triatomines were dissected to confirm salivary gland infection. Results: Specimens of R. pictipes showed higher rates of intestinal infection compared to the other three species. Epimastigotes and trypomastigotes were detected in hemolymph of four species; however, parasitism was lower in the species of the R. robustus lineage. Rhodnius robustus and R. neglectus specimens did not transmit T. rangeli by bite; after dissection, their glands were not infected. Only one specimen of R. nasutus and two of R. pictipes transmitted the parasite by bite. The rate of salivary gland infection was 16% for R. pictipes and 4% for R. nasutus. Conclusions: Both infectivity (intestinal, hemolymphatic and glandular) and transmission of T. rangeli (SC58/KP1-) were greater and more efficient in R. pictipes. These results reinforce the hypothesis that these triatomines may act as biological filters in the transmission of T. rangeli.

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Rhodnius barretti, a new species of Triatominae (Hemiptera: Reduviidae) from western Amazonia

Cited by 72 publications

References 42 publications

Description of the diploid chromosome set of Triatoma pintodiasi (Hemiptera, Triatominae)

Description of the diploid chromosome set of Triatoma pintodiasi (Hemiptera, Triatominae)

Triatominae Survey (Hemiptera: Reduviidae: Triatominae) in the South-Central Region of the State of Bahia, Brazil Between 2008 and 2013

Susceptibilidad de diferentes especies de Rhodnius (Hemiptera, Reduviidae, Triatominae) a una cepa brasileña de Trypanosoma rangeli (SC58/KP1-)

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