Influência da temperatura no ciclo de vida de Triatoma melanosoma Martínez, Olmedo &amp; Carcavallo, 1987 (Hemiptera, Reduviidae)

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

doi:10.1590/s0074-02761999000600027

Cited by 7 publications

(5 citation statements)

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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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“…Por lo tanto, la temperatura media registrada para la zona más densamente poblada por vectores (9,6 °C), correspondió a la media más baja registrada entre las franjas latitudinales y longitudinales consideradas en el estudio. Estos registros mínimos de la temperatura media coincidieron con el mínimo reportado como el límite de temperatura inferior soportable para los triatominos de regiones latitudinales más septentrionales, como lo sugieren Galvão, et al (50).…”

Section: Temperatura Promedio a Dos Metros De La Superficie Del Suelounclassified

Spatio-temporal analysis of the biophysical and ecological conditions of Triatoma dimidiata (Hemiptera: Reduviidae: Triatominae) in the northeast region of Colombia

Badel-Mogollón¹,

Rodríguez-Figueroa²,

Parra-Henao

2017

biomedica

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Introducción. Ante el desconocimiento del contexto espacio-temporal de las condiciones biofísicas (hidrometereológicas y de densidad de la cobertura vegetal) de las zonas con presencia deTriatoma dimidiata en Santander y Boyacá, es necesario dilucidar los patrones asociados con estas variables para determinar su distribución y control.Objetivo. Hacer el análisis espacio-temporal de las variables biofísicas relacionadas con la distribución de Triatoma dimidiata de los departamentos de Santander y Boyacá en la región nororiental de Colombia.Materiales y métodos. Se utilizaron las bases de datos de los registros de presencia deT. dimidiata y de factores hidrometereológicos del Special Report on Emissions Scenarios (SRES) del Intergovernmental Panel on Climate Change, IPCC. Se estudiaron las variables de temperatura, humedad relativa, pluviosidad y densidad de la cobertura vegetal a nivel regional y local, se hizo el análisis espacial y el geoestadístico, así como el análisis estadístico descriptivo y temporal de las series de Fourier.Resultados. En las áreas con mayor presencia de T. dimidiata, las temperaturas a dos metros del suelo y en suelo cubierto oscilaron entre 14,5 y 18,8 °C, y la temperatura ambiente fue de 30 a 32 °C. La densidad de la cobertura vegetal y la pluviosidad en las áreas de mayor presencia de T. dimidiata exhibieron patrones de picos anuales y bienales. Los valores de la humedad relativa fluctuaron entre 66,8 y 85,1 %.Conclusiones. Las temperaturas a nivel de superficie y a dos metros del suelo fueron las variables determinantes de la distribución espacio-temporal de T. dimidiata. La elevada humedad relativa incentivó la búsqueda de refugios e incrementó la distribución geográfica en los picos anual y bienal de pluviosidad a nivel regional. Las condiciones ecológicas y antrópicas sugieren que T. dimidiata es una especie de gran resiliencia.

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“…Among the different stages, the 4th and 5th are normally most resistant, because of their higher capacity to ingest blood. Various authors have focused their laboratory studies on the resistance period to fasting among the various species, including Galvão et al ( 1996Galvão et al ( , 1999a and Jurberg and Costa ( 1989a , b ).…”

Section: Feeding and Developmentmentioning

confidence: 99%

“…Chinche besucona (or just chinche; note that "telepate" more usually refers to cimicid bedbugs) Talaje (Spanish-"cutting bug," but mainly applied to cimicid bedbugs) Chuluyu (NE Honduras-usually applied specifi cally to R. prolixus , probably derives from chuzu , "needle" or "spear," + uyu , "alive") Polvoso (Spanish-"dusty"; in NE Honduras usually applied specifi cally to T. dimidiata , probably refers to the habit of nymphs to cover themselves with dust) Chinche bebe sangre (Costa Rica, Spanish-"blood-drinking bug") Cuba Sangrejuela (Spanish-"bloodstealer," also refers to leeches) Colombia Pito (Spanish-"whistle" or "horn," but may also refer to the bug's extended mouthparts) Chinche picuda Venezuela Chipo (colloquial Spanish-"little bug") Îipi (Macuxi Indians; refers specifi cally to T. maculata ) Ecuador Chinchorro (Spanish + Quechua-"large bug") Peru Chirimacha (Quechua-"bug that dislikes the cold" or "drunk with the cold") Paraguay Chichá guazú (Guarani, probably derived from Spanish chinche , "bug," + Guarani guazú , "big") Itchajuponja (Ayoreo, probably derived from Spanish chinche , "bug," + jupona , "sucker") Sham bui tá (Aché-"insect that does harm by its dejections" mainly used for blister beetles) Timbucú (in the Guarani of the Chiriguano and Tapieté groups, signifi es "long beak") Bolivia Vinchuca (Quechua-"bug that lets itself fall") Uluchi (Quechua-"bug without wings"; refers to nymphal stages) Timbucú Chile Vinchuca Argentina Vinchuca Uruguay Vinchuca (continued) 1988 , 1989a , b , c , 1990a , b , 1992 ), Silva and Silva ( 1988a, b , c , d , e , 1989, 1990a, b , 1991, and Silva et al ( 1995 ) (Galvão et al 1995(Galvão et al , 1999bRocha et al 1994Rocha et al , 2001a. According to most authors, when associated with low relative humidity, the cycle is shortened by metabolic alteration and dehydration, increasing the number of meals to balance the energy budget and water loss.…”

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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Influência da temperatura no ciclo de vida de Triatoma melanosoma Martínez, Olmedo & Carcavallo, 1987 (Hemiptera, Reduviidae)

Abstract: Influence of the Temperature in the Life

Cited by 7 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

Spatio-temporal analysis of the biophysical and ecological conditions of Triatoma dimidiata (Hemiptera: Reduviidae: Triatominae) in the northeast region of Colombia

Hematophagous Bugs (Reduviidae, Triatominae)

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