Differential susceptibility of triatomines of the genus Rhodnius to Trypanosoma rangeli strains from different geographical origins

Machado, Paulo Eduardo de Abreu; Eger-Mangrich, Iriane; Rosa, Gabriel Fernandes Camargo; Koerich, Leonardo B.; Grisard, Edmundo Carlos; Steindel, Mário

doi:10.1016/s0020-7519(01)00150-3

Cited by 32 publications

(27 citation statements)

References 9 publications

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“…Machado, et al, (2), using the same strain as in the present paper (SC-58/KP1-), observed glandular infection in R. nasutus and R. neglectus, but to a lesser extent compared to the other strain (Choachí/ ), which developed much better in these species of the R. robustus lineage. We observed the same behavior when comparing the development of strain SC-58.…”

Section: Discussionsupporting

confidence: 69%

“…Forty-two days after the infective feeding, the salivary glands of the surviving triatomines were extracted and immediately examined to identify the presence of parasites (2). Then, the insects were isolated and subsequently dissected.…”

Section: Experimental Infectionmentioning

confidence: 99%

“…The most notable biological characteristic of T. rangeli in its invertebrate hosts is the passage of parasites from the intestine into the hemolymph and then to the insect salivary glands, where the protozoan develops infective metacyclic trypomastigotes. 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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confidence: 99%

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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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Section: Discussionsupporting

confidence: 69%

Section: Experimental Infectionmentioning

confidence: 99%

mentioning

confidence: 99%

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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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“…It has been observed that the triatomids (particularly from the Rhodnius genus) are susceptible to T. rangeli strains having the same geographical origin (Cuba Cuba et al 1972, Cuba Cuba 1998, D'Alessandro 1976, D'Alessandro-Bacigalupo & Gore-Saravia 1992, Machado et al 2001). Several T. rangeli strains have shown variable behaviour in different Rhodnius species; for example, strains from Colombia and Costa Rica do not produce metacyclic tripomastigotes in R. pallescens or R. ecuadoriensis.…”

Section: Vector Susceptibility To Infection With T Rangelimentioning

confidence: 99%

Trypanosoma (Herpetosoma) rangeli Tejera, 1920: an updated review

Guhl

Vallejo

2003

Mem. Inst. Oswaldo Cruz

139

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“…It is recognized that the species of triatominae belonging to the genus Rhodnius are susceptible to infection by Trypanosoma rangeli, and the occurrence has already been recorded in the following species: Rhodnius domesticus, Rhodnius nasutus, Rhodnius neglectus 4 8 .…”

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confidence: 99%

Rhodnius stali: new vector infected by Trypanosoma rangeli (Kinetoplastida, Trypanosomatidae)

Castro

Ribeiro

Ramos

et al. 2017

Rev. Soc. Bras. Med. Trop.

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Differential susceptibility of triatomines of the genus Rhodnius to Trypanosoma rangeli strains from different geographical origins

Cited by 32 publications

References 9 publications

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

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

Trypanosoma (Herpetosoma) rangeli Tejera, 1920: an updated review

Rhodnius stali: new vector infected by Trypanosoma rangeli (Kinetoplastida, Trypanosomatidae)

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