Parâmetros populacionais para Triatoma sordida Stal, 1859, o vetor mais freqüente da doença de Chagas no Triângulo Mineiro (Heteroptera, Triatominae)

Pelli, Afonso; Silva, Michel Alves da; Sarmento, Fabiano Rodrigues; Martins, Elizabeth; Mata, Simone Alves da; Domingues, Marcos Abel; Ramı́rez, Luı́s Eduardo

doi:10.1590/s0037-86822007000100005

Cited by 11 publications

(15 citation statements)

References 13 publications

(5 reference statements)

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“…transmission in the Uberaba region, had a life cycle of 183 ± 36 days under conditions similar to those used in our study 10 . Therefore, the fact that P. herreri exhibited an intermediate life cycle reinforces its potential as a vector in areas that are distant from its regular ecological niche.…”

Section: Tablesupporting

confidence: 52%

The development of Panstrongylus herreri under fluctuating environmental conditions

Junior

Mendes

Anhê

et al. 2017

Rev. Soc. Bras. Med. Trop.

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Introduction: Panstrongylus herreri is a main Chagas disease vector, and its success as a vector stems from its ability to establish domiciliated colonies; we aimed to explore its biology and reproduction. Methods: The average amount of blood ingested and the time from the beginning of a blood meal to the production of feces were recorded. Results: Females exhibited a higher blood ingestion rate than males, but similar defecation times and frequencies were observed. Conclusions: Despite the detected decrease in oviposition rates, P. herreri's potential as a Chagas disease vector in environments other than the Amazon forest cannot be discounted.

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Section: Tablesupporting

confidence: 52%

The development of Panstrongylus herreri under fluctuating environmental conditions

Junior

Mendes

Anhê

et al. 2017

Rev. Soc. Bras. Med. Trop.

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“…The area in which these colonies were found is not covered by the Control Programme of Chagas Disease. In addition, it is important to mention the increasing infestation rates by T. brasiliensis (Costa et al 2003, Sarquis et al 2004) in semi-arid areas of the Brazilian Northeast and by Triatoma sordida Stal, 1859 in wide Cerrado areas (Diotaiuti et al 1995, Pelli et al 2007. Therefore, the positive results achieved with the control measures intended against Triatoma infestans (Klug, 1834) should not be interpreted as an endpoint in the struggle against vectorial transmission.…”

Section: Biology Diversity and Strategies For The Monitoring And Conmentioning

confidence: 99%

Biology, diversity and strategies for the monitoring and control of triatomines - Chagas disease vectors

Costa¹,

Lorenzo²

2009

Mem. Inst. Oswaldo Cruz

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“…A study that evaluated the population parameters for T. sordida registered high mortality, suggesting that approximately 50% of the insect population reaches the reproductive age in this species 54 . The low number of insects used for the infections (11 nymphs per group) and the examination of the intestinal contents using only two nymphs of the whole group infected is the major limitation of this study, even when considering that it was performed under similar conditions.…”

Section: Dworak Es Et Al -Interaction Of T Cruzi With Triatominementioning

confidence: 99%

Sympatry influence in the interaction of Trypanosoma cruzi with triatomine

Dworak

Araújo

Gomes

et al. 2017

Rev. Soc. Bras. Med. Trop.

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Introduction: Trypanosoma cruzi, the etiologic agent of Chagas disease, is widely distributed in nature, circulating between triatomine bugs and sylvatic mammals, and has large genetic diversity. Both the vector species and the genetic lineages of T. cruzi present a varied geographical distribution. This study aimed to verify the influence of sympatry in the interaction of T. cruzi with triatomines. Methods: The behavior of the strains PR2256 (T. cruzi II) and AM14 (T. cruzi IV) was studied in Triatoma sordida (TS) and Rhodnius robustus (RR). Eleven fifth-stage nymphs were fed by artificial xenodiagnosis with 5.6 × 10 3 blood trypomastigotes/0.1mL of each T. cruzi strain. Every 20 days, their excreta were examined for up to 100 days, and every 30 days, the intestinal content was examined for up to 120 days, by parasitological (fresh examination and differential count with Giemsa-stained smears) and molecular (PCR) methods. Rates of infectivity, metacyclogenesis and mortality, and mean number of parasites per insect and of excreted parasites were determined. Results: Sympatric groups RR+AM14 and TS+PR2256 showed higher values of the four parameters, except for mortality rate, which was higher (27.3%) in the TS+AM14 group. General infectivity was 72.7%, which was mainly proven by PCR, showing the following decreasing order: RR+AM14 (100%), TS+PR2256 (81.8%), RR+PR2256 (72.7%) and TS+AM14 (36.4%). Conclusions: Our working hypothesis was confirmed once higher infectivity and vector capacity (flagellate production and elimination of infective metacyclic forms) were recorded in the groups that contained sympatric T. cruzi lineages and triatomine species.

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Parâmetros populacionais para Triatoma sordida Stal, 1859, o vetor mais freqüente da doença de Chagas no Triângulo Mineiro (Heteroptera, Triatominae)

Abstract: O Triatoma sordida é o mais freqüente vetor do Trypanosoma cruzi, Chagas, 1909, em Uberaba, MG. O objetivo deste trabalho foi construir uma tabela de vida dinâmica para o Triatoma sordida visando fornecer dados para subsidiar o controle de suas populações.

Cited by 11 publications

References 13 publications

The development of Panstrongylus herreri under fluctuating environmental conditions

The development of Panstrongylus herreri under fluctuating environmental conditions

Biology, diversity and strategies for the monitoring and control of triatomines - Chagas disease vectors

Sympatry influence in the interaction of Trypanosoma cruzi with triatomine

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