Fauna triatomenae do estado da Bahia, Brasil: VI - prevalência geográfica da infecção dos tratomíneos por T. cruzi

Sherlock, Ítalo Rodrigues de Araújo; Serafim, E. M.

doi:10.1590/s0037-86821974000300001

Cited by 20 publications

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“…rubrofasciata is an important species of triatomine since it has been found infected by T. cruzi by several authors (Lucena & Magalhães Netto 1939, Dias & Neves 1943, Leal et al 1965, Sherlock & Serafim 1974, Sherlock 1979 (Sherlock 1979). The knowledge about its biology is still scarce, maybe due to the difficulty of maintaining an advantageous colony in the laboratory.…”

Section: Discussionmentioning

confidence: 99%

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Life Cycle and Reproductive Patterns of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera: Reduviidae), under Laboratory Conditions

Braga

Pinto

Lima

1998

Mem. Inst. Oswaldo Cruz

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The life cycle and reproductive patterns of Triatoma rubrofasciata were studied along with laboratory conditions for the establishment of a prolific colony. The insects were divided into four groups: two of them were maintained at room temperature (20.5°C to 33°C and 85% ± 5% of The establishment of a longterm colony of this triatomine species in the laboratory is believed to be difficult, since most of them have been shortlived, probably due to unfavorable environmental and feeding conditions. This investigation is aimed at providing more information regarding a better maintenance of this species in confinement. MATERIALS AND METHODSA total of 261 eggs was collected from the second generation of a colony from Evandro Chagas Institute, Belém, PA, Brazil, kindly provided by + Corresponding author. Fax: +55-21-521.6913. E-mail: mvbraga@gene.dbbm.fiocruz.br Received 11 August 1997 Accepted 23 March 1998 Dr Adelson AA de Souza, and kept in the Biology and Control of Vector Insects Laboratory, at Oswaldo Cruz Institute, Fiocruz, Brazil. As soon as the hatching occurred, the 1st instar nymphs were divided into four groups: two of them were kept in a climatic chamber (CC) (temperature: 29°C; humidity: 80% approximately) and the other were kept at room temperature (RT) (temperature: 20.5°C to 33°C; relative humidity (R.H).: 91.3 ± 4.3%). Both nymphs and adults were fed on Swiss mice. The groups were studied as follows: (a) group kept at RT and fed weekly (34 first instar nymphs); (b) group kept at RT and fed fortnightly (55 first instar nymphs); (c) group kept in CC and fed weekly (55 first instar nymphs); (d) group kept in CC and fed fortnightly (35 first instar nymphs).The insects were kept in glass containers, wrapped in black cardboard and covered with nylon netting bound by an elastic band. A filter-paper was placed on the bottom of the containers so as to absorb the insects' excreta and another was folded and placed vertically inside the container to be used as substrate. Each instar was put in separate containers. The adults were individually identified (Mac Cord et al. 1983) and were separated in couples after the completion of the nymphal cycle. In the four groups all females were kept permanently with males, except in the case of death of the males. The matings were confirmed by the presence of a spermatophore capsule inside the glass containers where couples were kept.The following parameters were observed: number of ecdyses, mortality rate of the nymphs as

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Section: Discussionmentioning

confidence: 99%

“…It is commonly the vector of Trypanosoma conorhini (Donovan) which infects Rattus rattus, and this insect is in close association with the rat. Sherlock and Serafim (1972) collected T. rubrofasciata in the State of Bahia, which presented a high level of natural infection by T. conorhini, never by T. cruzi.…”

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confidence: 99%

Life Cycle and Reproductive Patterns of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera: Reduviidae), under Laboratory Conditions

Braga

Pinto

Lima

1998

Mem. Inst. Oswaldo Cruz

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“…This region has been the focus of many studies (Juncá et al, 2008;Funch et al, 2009) because it is considered a refuge for many species (Rodrigues-Filho et al, 2002). Sherlock and Serafim (1972) reported the presence of nine triatomine species in the Chapada Diamantina region: Panstrongylus diasi, P. geniculatus, P. lutzi, P. megistus, Triatoma bahiensis, T. maculata, T. melanocephala, T. sordida, and T. tibiamaculata.…”

Section: Introductionmentioning

confidence: 99%

New record and cytogenetic analysis of Psammolestes tertius Lent & Jurberg, 1965 (Hemiptera, Reduviidae, Triatominae) from Bahia State, Brazil

Oliveira

Alevi²,

Fonseca³

et al. 2016

Genet. Mol. Res.

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ABSTRACT. This paper reports on the first occurrence of Psammolestes tertius in the Chapada Diamantina region, located in the city of Seabra, Bahia State, in northeastern Brazil. Following an active search, 24 P. tertius specimens were collected from Phacellodomus rufifrons (rufousfronted thornbird) nests. The insects did not present any symptoms of infection by Trypanosoma cruzi. P. tertius males were cytogenetically analyzed, and the results were compared with those of other specimens from the Brazilian State of Ceará. Triatomines from both locations presented the same cytogenetic characteristics: 22 chromosomes, little variation in the size of the autosomes, Y chromosomes that were larger than the X chromosomes, a chromocenter formed only by the sex chromosomes during prophase, and autosomes lacking constitutive heterochromatin. However, it is important to note that this species shows intraspecific chromosomal variation. In light of the results obtained, it is recommended that more studies be performed to characterize P. tertius. These studies will be particularly helpful in understanding this species in ecological, biological, biogeographical, and phylogenetic terms.

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“…The natural infection of T. rubrofasciata by Trypanosoma cruzi was detected by Dias and Neves (1943), Lucena and Marques (1955), Costa (1955) apud Fuentes et al (1971), Sherlock and Serafim (1974), Brasil andSilva (1983), andLeal et al (1965) apud Brasil (1986). However, in spite of being a domiciliated species, it has no epidemiological importance except in the seashore zone -Pernambuco forest, where it seems adapted as a natural vector of T. cruzi (Fuentes et al 1971).…”

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confidence: 99%

Resistance to Starvation of Triatoma rubrofasciata (De Geer, 1773) under Laboratory Conditions (Hemiptera: Reduviidae: Triatominae)

Cortez

Gonçalves

1998

Mem. Inst. Oswaldo Cruz

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Fauna triatomenae do estado da Bahia, Brasil: VI - prevalência geográfica da infecção dos tratomíneos por T. cruzi

Cited by 20 publications

References 1 publication

Life Cycle and Reproductive Patterns of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera: Reduviidae), under Laboratory Conditions

Life Cycle and Reproductive Patterns of Triatoma rubrofasciata (De Geer, 1773) (Hemiptera: Reduviidae), under Laboratory Conditions

New record and cytogenetic analysis of Psammolestes tertius Lent & Jurberg, 1965 (Hemiptera, Reduviidae, Triatominae) from Bahia State, Brazil

Resistance to Starvation of Triatoma rubrofasciata (De Geer, 1773) under Laboratory Conditions (Hemiptera: Reduviidae: Triatominae)

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