Comportamiento alimenticio de Rhodnius robustus Larrousse, 1927 (Hemiptera, Reduviidae) en condiciones de laboratorio

Rubio, Camilo; Moncada, Ligia I.; Rojas, Marco Andrés; García, Alexander García

doi:10.7705/biomedica.v33i2.743

Cited by 4 publications

(4 citation statements)

References 29 publications

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“…However, for R. pictipes in the same nymphal stage, it has been reported that blood intake ranges from 127.40 to 199.50 mg [ 20 , 32 ]. Therefore, the data in the present study show that R. robustus can ingest up to twice the volume of blood ingested by R. pictipes (730.0 vs. 465.0 mg), corroborating the results of other authors [ 20 , 32 , 48 , 49 ].…”

Section: Discussionsupporting

confidence: 93%

“…Adult insects of the R. robustus species are known to be larger, measuring between 20 and 26 mm in length, while the adult insects of R. pictipes are between 18 and 22 mm in length [ 47 ]. Barreto-Santana et al [ 48 ] compared the blood intake between the different developmental stages of R. robustus and R. neglectus and reported that the highest intake was for the fifth-instar nymphs of R. robustus , while Rubio et al [ 49 ] showed that fifth-instar nymphs of R. robustus ingest, on average, 337.19 mg of blood. However, for R. pictipes in the same nymphal stage, it has been reported that blood intake ranges from 127.40 to 199.50 mg [ 20 , 32 ].…”

Section: Discussionmentioning

confidence: 99%

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Infection susceptibility and vector competence of Rhodnius robustus Larrousse, 1927 and R. pictipes Stal, 1872 (Hemiptera, Reduviidae, Triatominae) for strains of Trypanosoma cruzi (Chagas, 1909) (Kinetoplastida, Trypanosomatidae) I, II and IV

et al. 2022

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Background Rhodnius robustus and Rhodnius pictipes are vectors of Trypanosoma cruzi, the etiologic agent of Chagas disease (CD), that are found in the Brazilian Amazon region. Susceptibility to infection and vector competence depend on the parasite-vector relationship. Our objective was to evaluate the interaction between T. cruzi and these two triatomine vectors in pure and mixed experimental infections of T. cruzi strains from the same or different geographic regions. Methods Fifth-instar nymphs of R. robustus and R. pictipes were fed on mice infected with four T. cruzi strains, namely genotypes TcIAM, TcIMG, TcIIPR, and TcIVAM, respectively, from the Brazilian states of Amazonas, Minas Gerais and Paraná. Over a period of 120 days, excreta were examined every 20 days to assess vector competence, and intestinal contents (IC) were examined every 30 days to determine susceptibility to infection. Results The highest positive rate in the fresh examination (%+FE, 30.0%), the highest number of parasitic forms (PF, n = 1969) and the highest metacyclogenesis rate (%MC, 53.8%) in the excreta were recorded for R. robustus/TcIVAM. Examination of the IC of R. pictipes revealed a higher number of PF in infections with TcIAM (22,680 PF) and TcIIPR (19,845 PF) alone or in association (17,145 PF), as well as a %+FE of 75.0% with TcII, in comparison with the other genotypes. The highest %MC (100%) was recorded for the mixed infections of TcIAM with TcIIPR or TcIVAM in the IC of R. pictipes. Conclusions Overall, both species were found to be susceptible to the T. cruzi strains studied. Rhodnius robustus showed vector competence for genotypes TcIVAM and TcIAM+TcIVAM and R. pictipes for TcIAM+TcIVAM and TcIAM+TcIIPR; there was elimination of infective forms as early as at 20 days. Our results suggest that both the genetics of the parasite and its geographic origin influence the susceptibility to infection and vector competence, alone or in association. Graphical Abstract

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Infection susceptibility and vector competence of Rhodnius robustus Larrousse, 1927 and R. pictipes Stal, 1872 (Hemiptera, Reduviidae, Triatominae) for strains of Trypanosoma cruzi (Chagas, 1909) (Kinetoplastida, Trypanosomatidae) I, II and IV

et al. 2022

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“…In addition, the non-domestic habitat (as opposed to domestic habitats) of this bug would limit food availability, favoring a disparate pronotal and muscle growth to enhance searching and finding of prey. However, although adult stages consume more blood than first to third instar, the former consume considerably less than fourth and fifth instar (Bar et al, 2003;Rubio et al, 2013). For finding and chasing mates, a large musculature in the pronotal region may be useful also.…”

Section: Discussionmentioning

confidence: 99%

Ontogenetic changes in wild chagasic bugs (Dipetalogaster maximus): exploring morphological adaptations in pre-adult and adult stages

Bello-Bedoy¹,

Peiro-Nuño²,

Córdoba‐Aguilar

et al. 2019

Rev.Mex.Biodiv.

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“…27, No. 3, septiembre-diciembre de 2016 http://revistabiomedica.mx/index.php/revbiomed/article/view/539 como laceraciones, mucosas o conjuntiva (31)(32). En general, los tiempos obtenidos en todos los estadios fueron más cortos que los reportados para otras especies como T. rubida y T. guasayana (33)(34).…”

Section: Materials Y Métodosunclassified

Tasa de infección y tiempo de defecación de los estadios ninfales de Triatoma dimidiata (Latreille, 1811) después de la infección experimental con Trypanosoma cruzi

et al. 2016

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RESUMENIntroducción. El parásito Trypanosoma cruzi es el agente etiológico de la enfermedad de Chagas. Su transmisión es a través de insectos de la subfamilia Triatominae, donde Triatoma dimidiata es uno de los vectores principales en México y Centro América. La transmisión del parásito depende de factores como la tasa de infección de las distintas especies y el tiempo de defecación después de la alimentación. Objetivo. Evaluar la infección con T. cruzi en los cinco estadios de T. dimidiata y determinar el tiempo de defecación postprandial. Material y métodos. Treinta individuos de cada estadio de T. dimidiata fueron alimentados con sangre infectada con T. cruzi. Se llevó a cabo una segunda alimentación 20 días posteriores para evaluar la presencia del parásito en las heces y medir el tiempo de defecación postprandial. Resultados. El número total de ejemplares infectados con T. cruzi fue de 99 (66 %). No se encontraron diferencias significativas en la tasa de infección por estadio ninfal (p>0.05). El tiempo de defecación fue menor en los individuos del quinto estadio en relación a los otros grupos (p<0.05). Conclusiones. Todos los estadios de T. dimidiata se infectaron con T. cruzi, considerando al quinto instar como un mejor vector del parásito en condiciones de laboratorio.

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Comportamiento alimenticio de Rhodnius robustus Larrousse, 1927 (Hemiptera, Reduviidae) en condiciones de laboratorio

Cited by 4 publications

References 29 publications

Infection susceptibility and vector competence of Rhodnius robustus Larrousse, 1927 and R. pictipes Stal, 1872 (Hemiptera, Reduviidae, Triatominae) for strains of Trypanosoma cruzi (Chagas, 1909) (Kinetoplastida, Trypanosomatidae) I, II and IV

Infection susceptibility and vector competence of Rhodnius robustus Larrousse, 1927 and R. pictipes Stal, 1872 (Hemiptera, Reduviidae, Triatominae) for strains of Trypanosoma cruzi (Chagas, 1909) (Kinetoplastida, Trypanosomatidae) I, II and IV

Ontogenetic changes in wild chagasic bugs (Dipetalogaster maximus): exploring morphological adaptations in pre-adult and adult stages

Tasa de infección y tiempo de defecación de los estadios ninfales de Triatoma dimidiata (Latreille, 1811) después de la infección experimental con Trypanosoma cruzi

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