Tempo de alimentação e defecação das ninfas de Triatoma melanosoma Martínez, Olmedo &amp; Carcavallo (Hemiptera, Reduviidae) em diferentes condições de temperatura e umidade

Galvão, Cléber; Rocha, Dayse da Silva; Cunha, Vanda; Jurberg, José; Carcavallo, R. U.

doi:10.1590/s0101-81752001000500019

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…In 1926 Uribe reported the survival of a 3rd instar nymph of Rhodnius prolixus for 5 months. The literature shows discrepancies in the survival periods of various species studied according to the methodology employed, which can show variation in the feeding sources, relative humidity, and temperature, as well as the stress the insect suffers during handling (Wood 1951 ;Friend and Smith 1977 ;Mascarenhas 1990 ;Galvão et al 2001a ;Dias-Lima andSherlock 2002 , Martínez-Ibarra et al 2003 ). Resistance to fasting can vary between and within species.…”

Section: Feeding and Developmentmentioning

confidence: 99%

Hematophagous Bugs (Reduviidae, Triatominae)

Jurberg

Galvão

Weirauch

et al. 2015

True Bugs (Heteroptera) of the Neotropics

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The members of the subfamily Triatominae (Heteroptera, Reduviidae) are vectors of Trypanosoma cruzi (Chagas), the causative agent of Chagas disease or American trypanosomiasis. As important vectors, triatomine bugs have attracted ongoing attention, and thus, various aspects of their systematics, biology, ecology, biogeography, and evolution have been studied for decades. In the present chapter, the authors summarize the current knowledge on the systematics, phylogeny, evolution, and biology of these vectors and discuss the implications for human health.

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Section: Feeding and Developmentmentioning

confidence: 99%

Hematophagous Bugs (Reduviidae, Triatominae)

Jurberg

Galvão

Weirauch

et al. 2015

True Bugs (Heteroptera) of the Neotropics

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“…A capacidade de se alimentar de forma rápida e eficiente facilitaria a realização de repastos sangüíneos durante o período diurno utilizando o homem como hospedeiro. Segundo Galvão et al (2001) o número de repastos realizados tem implicâncias epidemiológicas, já que quanto mais contatos ocorrerem entre vetor e hospedeiro mais aumentam as probabilidades de infecção ou transmissão de T. cruzi. Mas, por outro lado, quanto menos o vetor se expuser na procura pelo alimento, mais aumentam suas chances de sobrevivência.…”

Section: Resultsunclassified

Ciclo biológico em laboratório de Rhodnius brethesi Matta, 1919 (Hemiptera, Reduviidae, Triatominae), potencial vetor silvestre da doença de Chagas na Amazônia

Rocha

Santos

Cunha

et al. 2004

Mem. Inst. Oswaldo Cruz

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R. brethesi is a sylvatic species from the Amazon region; it has been incriminated as responsible for the transmission of Chagas disease in collectors of piacaba in this region. The aim of present study was to investigate the efficiency of these insects as potential vectors of Trypanosoma cruzi. Aspects related with feeding and defecation patterns, life time, and mortality had been observed in each instar of R. brethesi. We use 5th instar nymphs to get adults virgins, after the moulting 3 groups with 6 females and 2 males each were created to obtain eggs. After hatching, 1st instar nymphs had been weighed and kept in bottles until the next moult. Insects were fed once a week in mice. Results showed that the average period of incubation was 17 days, the number of blood meal was increasing from the 1st to the 5th instar nymph with 7 (average) to become adult, a significative numbers of the defecations occurring immediately after the bloodmeals. The total percentual of mortality was 16%. This results suggests that this species presents a good exploitation of blood meals and a brief nymphal development in laboratory conditions reflecting its behavior in sylvatic environments.

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“…The genus Rhodnius is known for its voracity in searching for food 18 and for ingesting a high volume of blood during feeding. Considering that the time that triatomine insects take to defecate is a crucial factor in the transmission of T. cruzi , 19,20 the present study investigated the feeding and defecation patterns of R. nasutus with the goal of estimating its potential capacity for transmitting Chagas disease in northeastern Brazil.…”

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confidence: 99%

Feeding and Defecation Patterns of Rhodnius nasutus (Hemiptera; Reduviidae), A Triatomine Native to an Area Endemic for Chagas Disease in the State of Ceará, Brazil

Oliveira¹,

Carvalho-Costa²,

Sarquis³

et al. 2009

The American Journal of Tropical Medicine and Hygiene

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Abstract. The importance of Rhodnius nasutus in the transmission of Chagas disease in northeastern Brazil was investigated regarding feeding and defecation patterns of this triatomine under laboratory conditions. An average of 30 samples were studied for each instar, from fourth-instar nymphs onward. On average, 86.4% started feeding after less than 10 minutes. In terms of the duration of feeding, 53.3% of fourth instar nymphs, 81.9% of fifth-instar nymphs, 21.9% of males, and 36.7% of females fed for more than 15 minutes. In all groups, there were insects that defecated and urinated during feeding; adult males defecated the most and fourth instar nymphs defecated the least. The results demonstrate that R. nasutus may be considered an efficient T. cruzi vector because it avidly searches for a food source, has a lengthy feeding time with low probability of interruption during feeding, and achieves a high percentage of engorgement.

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Tempo de alimentação e defecação das ninfas de Triatoma melanosoma Martínez, Olmedo & Carcavallo (Hemiptera, Reduviidae) em diferentes condições de temperatura e umidade

Cited by 3 publications

References 24 publications

Hematophagous Bugs (Reduviidae, Triatominae)

Hematophagous Bugs (Reduviidae, Triatominae)

Ciclo biológico em laboratório de Rhodnius brethesi Matta, 1919 (Hemiptera, Reduviidae, Triatominae), potencial vetor silvestre da doença de Chagas na Amazônia

Feeding and Defecation Patterns of Rhodnius nasutus (Hemiptera; Reduviidae), A Triatomine Native to an Area Endemic for Chagas Disease in the State of Ceará, Brazil

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