Influence of blood meal and mating in reproduction patterns of Triatoma brasiliensis females (Hemiptera: Reduviidae) under laboratory conditions

Daflon-Teixeira, Natalia Faria; Carvalho-Costa, Filipe Aníbal; Chiang, R. Gary; Lima, Marli Maria

doi:10.1590/s0074-02762009000700016

Cited by 15 publications

(13 citation statements)

References 22 publications

(19 reference statements)

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“…To maintain vigilance, it is necessary to focus on secondary vectors, including T. juazeirensis and T. sherlocki. Evaluation of their potential as vectors includes numerous biological parameters, especially the capacity to reproduce (brasileiro 1984; Costa et al 1986;lima et al 1987;marassá et al 1998;Daflon-teixeira et al 2009). In this study, the data clearly demonstrate that T. juazeirensis has a greater reproductive capacity to propagate than T. sherlocki.…”

Section: Discussionmentioning

confidence: 50%

“…(Daflon-teixeira et al 2009), but lower than T. brasiliensis (142) (soares et al 2000) and Triatoma rubrofasciata (De Geer) (242.9) (braGa et al 1998), fed on mice (M. musculus). The difference in egg laying by T. brasiliensis displayed a difference based on the food source highlighting the influence exerted by feeding on the fertility and fecundity (Costa et al 1986, Guarneri et al 2000.…”

Section: Discussionmentioning

confidence: 98%

“…Several studies have demonstrated that mating is a stimulus for the production of eggs, making females more fecund (brasileiro 1984;lima et al 1987;Daflon-teixeira et al 2009 GomeZ-núneZ 1964;braGa et al 1998;DamborsKy et al 2005). Together, these observations suggest that the use of laboratory conditions provide distinct rates obtained for egg laying and hatching reflect the variable capacity of a particular species to be adapted to lab conditions.…”

Section: Discussionmentioning

confidence: 99%

“…In Brazil, campaign to control the T. infestans caused the reduction of its populations and now other vectors are replacing it (Diotaiuti et al 1995;almeiDa et al 2000;silVeira 2011 Biological parameters of the triatomines such as: development of the biological cycle, egg laying rate, egg hatching rate, period of embryonic development among others, vary according to species and environmental conditions, and are greatly influenced by the availability of blood supply (brasileiro 1984;sChofielD 1985;lima et al 1987;Daflon-teixeira et al 2009). While biological data are available for many species, comparisons among studies are difficult due to differences in experimental design, especially in relation to temperature and humidity (often uncontrolled), feeding frequency, blood meal sources (Zárate 1983), and methods of statistical analysis to interpret the results.…”

Section: Discussionmentioning

confidence: 99%

“…The examination of the food source of wild triatomines showed that they may feed on opossum, armadillo and rodents (Costa et al 1998 Thus, determination of different biological parameters for triatomines is important for the analysis of their capacity as vectors for T. cruzi infections. These parameters include the oviparity, fertility, longevity, feeding patterns and defecation patterns (brasileiro 1984;Costa et al 1986;lima et al 1987;Daflon-teixeira et al 2009). Considering that both species infest human dwellings in the state of Bahia, the evaluation of vectorial capacity is important for future planning of actions to control infestations and studying the epidemiology of Chagas disease.…”

Section: E-issn 1983-0572 E-issn 1983-0572mentioning

confidence: 99%

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Deposition, Incubation Period and Hatching of Eggs from Triatoma juazeirensis Costa & Felix and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira & Barata, (Hemiptera: Reduviidae) under Laboratory Conditions

et al. 2012

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Abstract. Triatoma juazeirensis Costa & Felix andTriatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira & Barata are members of the Triatoma brasiliensis Neiva, 1911 species complex. Discovered in the state of Bahia, Brazil, collections from both natural and artificial habitats revealed that they can be found infected by Trypanosoma cruzi (Chagas) suggesting a potential to be vectors for Chagas disease. To contribute to the evaluation of this potential, the capacity of each species to proliferate under laboratory conditions was measured by the number of eggs laid, the rate of hatching and the incubation time over a 22-week period. Thirty pairs, fifteen of each species, were maintained under laboratory conditions by weekly feedings on mice, Mus musculus (Linnaeus). The comparisons of laid and hatched eggs of T. juazeirensis and T. sherlocki were analyzed by t-test and Mann-Whitney test. When p value of <0.01 it was considered statistically significant. For comparison of the average longevity, a chi-square analysis was used. When p > 0.01, the average longevity was not considered statistically different. The two species presented similar incubation periods for their eggs, but T. juazeirensis demonstrated greater reproductive potential than T. sherlocki. The females of T. sherlocki deposited significantly fewer eggs with a lower rate of viability. Results suggest that T. juazeirensis is a more serious threat, concerning to these reproductive features. Considering the longevity, no significant differences could be noticed. Keywords

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Section: Discussionmentioning

confidence: 50%