Estudos sobre a resistência ao jejum e aspectos nutricionais de Cavernicola lenti Barrett &amp; Arias, 1985 (Hemiptera, Reduviidae, Triatominae)

Costa, Jane; Jurberg, José

doi:10.1590/s0074-02761989000800027

Cited by 10 publications

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“…Development delays in the 5th instar nymphs have been qualitatively observed in 86% of the cases collected in the survey. This stage is one of the most “resistant” stages in triatomines; e.g., the 5th instar nymph is one of the stages most resistant to starvation in many triatomine species: this characteristic has been confirmed in T. brasiliensis [45] , [46] , in T. lecticularia [47] , in T. tibiamaculata , P. megistus , and in R. neglectus [48] , in Dipetalogaster maximus [49] , in Cavernicola lenti [50] , in T. vitticeps [51] , and in T. melanosoma [52] . Moreover, the 5th instar nymphs are the most resistant to insecticides in T. infestans and R. prolixus [53] – [55] .…”

Section: Discussionmentioning

confidence: 99%

Adaptive Developmental Delay in Chagas Disease Vectors: An Evolutionary Ecology Approach

Ginoux

Rajon

et al. 2010

PLoS Negl Trop Dis

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BackgroundThe developmental time of vector insects is important in population dynamics, evolutionary biology, epidemiology and in their responses to global climatic change. In the triatomines (Triatominae, Reduviidae), vectors of Chagas disease, evolutionary ecology concepts, which may allow for a better understanding of their biology, have not been applied. Despite delay in the molting in some individuals observed in triatomines, no effort was made to explain this variability.MethodologyWe applied four methods: (1) an e-mail survey sent to 30 researchers with experience in triatomines, (2) a statistical description of the developmental time of eleven triatomine species, (3) a relationship between development time pattern and climatic inter-annual variability, (4) a mathematical optimization model of evolution of developmental delay (diapause).Principal Findings85.6% of responses informed on prolonged developmental times in 5th instar nymphs, with 20 species identified with remarkable developmental delays. The developmental time analysis showed some degree of bi-modal pattern of the development time of the 5th instars in nine out of eleven species but no trend between development time pattern and climatic inter-annual variability was observed. Our optimization model predicts that the developmental delays could be due to an adaptive risk-spreading diapause strategy, only if survival throughout the diapause period and the probability of random occurrence of “bad” environmental conditions are sufficiently high.Conclusions/SignificanceDevelopmental delay may not be a simple non-adaptive phenotypic plasticity in development time, and could be a form of adaptive diapause associated to a physiological mechanism related to the postponement of the initiation of reproduction, as an adaptation to environmental stochasticity through a spreading of risk (bet-hedging) strategy. We identify a series of parameters that can be measured in the field and laboratory to test this hypothesis. The importance of these findings is discussed in terms of global climatic change and epidemiological consequences.

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Section: Discussionmentioning

confidence: 99%

Adaptive Developmental Delay in Chagas Disease Vectors: An Evolutionary Ecology Approach

Ginoux

Rajon

et al. 2010

PLoS Negl Trop Dis

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“…Resistance to starvation -For these studies, we essentially followed the protocol as established by Costa and Jurberg (1989), Jurberg and Costa (1989) and Costa and Marchon-Silva (1998). Thirty eggs and 30 nymphs (F1) were grouped according to their stages.…”

Section: Methodsmentioning

confidence: 99%

“…Afterwards, Perlowagora-Szumlewicz (1954, 1969 noted that insecticide applications must be carried out in preestablished regular periods of time for species that present a high resistance to fast, stating that only then the domiciliary reinfestations can be minimized. Several other authors have conducted extensive studies about various species of triatomines analyzing these biologic aspects, such as Zeledon et al (1970), Costa and Perondini (1973), Jurberg and Costa (1989), and Costa and Jurberg (1989).…”

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confidence: 99%

Triatoma rubrovaria (Blanchard, 1843) (Hemiptera-Reduviidae-Triatominae) III: patterns of feeding, defecation and resistance to starvation

Almeida

Francischetti

Pacheco³

et al. 2003

Mem. Inst. Oswaldo Cruz

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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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Estudos sobre a resistência ao jejum e aspectos nutricionais de Cavernicola lenti Barrett & Arias, 1985 (Hemiptera, Reduviidae, Triatominae)

Cited by 10 publications

References 0 publications

Adaptive Developmental Delay in Chagas Disease Vectors: An Evolutionary Ecology Approach

Adaptive Developmental Delay in Chagas Disease Vectors: An Evolutionary Ecology Approach

Triatoma rubrovaria (Blanchard, 1843) (Hemiptera-Reduviidae-Triatominae) III: patterns of feeding, defecation and resistance to starvation

Hematophagous Bugs (Reduviidae, Triatominae)

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