Seasonality on the life cycle of Aedes aegypti mosquito and its statistical relation with dengue outbreaks

Pliego, Emilene Pliego; Velázquez-Castro, Jorge; Collar, Andrés Fraguela

doi:10.1016/j.apm.2017.06.003

Cited by 31 publications

(12 citation statements)

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“…For example, seasonal rainfall can increase the abundance of mosquitoes, where the reproduction depends on the availability of suitable breeding sites such as water-filled containers. Moreover, many species of mosquitoes in temperate zones overwinter in a diapausal state [33]. Hence, in order to fully understand the influences of the releasing sterile mosquitoes on control wild mosquitoes, further investigation on seasonal environmental effects must be addressed in the modeling, which is planned in our future research.…”

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Dynamics of delayed mosquitoes populations models with two different strategies of releasing sterile mosquitoes

Cai

Ai²,

Fan

2018

Mathematical Biosciences &Amp; Engineering

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To prevent the transmissions of mosquito-borne diseases (e.g., malaria, dengue fever), recent works have considered the problem of using the sterile insect technique to reduce or eradicate the wild mosquito population. It is important to consider how reproductive advantage of the wild mosquito population offsets the success of population replacement. In this work, we explore the interactive dynamics of the wild and sterile mosquitoes by incorporating the delay in terms of the growth stage of the wild mosquitoes. We analyze (both analytically and numerically) the role of time delay in two different ways of releasing sterile mosquitoes. Our results demonstrate that in the case of constant release rate, the delay does not affect the dynamics of the system and every solution of the system approaches to an equilibrium point; while in the case of the release rate proportional to the wild mosquito populations, the delay has a large effect on the dynamics of the system, namely, for some parameter ranges, when the delay is small, every solution of the system approaches to an equilibrium point; but as the delay increases, the solutions of the system exhibit oscillatory behavior via Hopf bifurcations. Numerical examples and bifurcation diagrams are also given to demonstrate rich dynamical features of the model in the latter release case.

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mentioning

confidence: 99%

Dynamics of delayed mosquitoes populations models with two different strategies of releasing sterile mosquitoes

Cai

Ai²,

Fan

2018

Mathematical Biosciences &Amp; Engineering

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“…Nos primeiros estágios (ovo, larva e pupa), as formas são consideradas imaturas e ocorrem na água, e somente o adulto é alado 16 . A oviposição depende de repasto sanguíneo suficiente e o tempo para a eclosão dos ovos, que acontece quando esses entram em contato com água, é menor a temperaturas mais elevadas [16][17][18] . Os estágios seguintes também têm sua evolução influenciada pela temperatura ambiente, assim como as atividades reprodutiva e de repasto sanguíneo de formas adultas [16][17][18] .…”

Section: Considerado Erradicado De 1957 a 1967 E De 1973 A 1976 A Reunclassified

“…A oviposição depende de repasto sanguíneo suficiente e o tempo para a eclosão dos ovos, que acontece quando esses entram em contato com água, é menor a temperaturas mais elevadas [16][17][18] . Os estágios seguintes também têm sua evolução influenciada pela temperatura ambiente, assim como as atividades reprodutiva e de repasto sanguíneo de formas adultas [16][17][18] . Os ovos são resistentes à dessecação e baixa temperatura por períodos prolongados, possibilitando o reaparecimento de focos de mosquitos quando em condições ambientais favoráveis 16,17 .…”

Section: Considerado Erradicado De 1957 a 1967 E De 1973 A 1976 A Reunclassified

“…Os estágios seguintes também têm sua evolução influenciada pela temperatura ambiente, assim como as atividades reprodutiva e de repasto sanguíneo de formas adultas [16][17][18] . Os ovos são resistentes à dessecação e baixa temperatura por períodos prolongados, possibilitando o reaparecimento de focos de mosquitos quando em condições ambientais favoráveis 16,17 . Dessa forma, a dinâmica populacional da espécie, considerando as etapas de desenvolvimento, de reprodução e sobrevivência, recebe forte influência climática, sendo que regiões ao mesmo tempo quentes e chuvosas podem ter aumento de criadouros, maiores taxas reprodutivas, menores taxas de mortalidade e maior proliferação de Ae.…”

Section: Considerado Erradicado De 1957 a 1967 E De 1973 A 1976 A Reunclassified

“…Dessa forma, a dinâmica populacional da espécie, considerando as etapas de desenvolvimento, de reprodução e sobrevivência, recebe forte influência climática, sendo que regiões ao mesmo tempo quentes e chuvosas podem ter aumento de criadouros, maiores taxas reprodutivas, menores taxas de mortalidade e maior proliferação de Ae. aegypti 10,[16][17][18] .…”

Section: Considerado Erradicado De 1957 a 1967 E De 1973 A 1976 A Reunclassified

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Óbitos por dengue no estado de São Paulo: análise espaço-temporal

Santana¹

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Introduction-Considered a major global public health problem in tropical and subtropical regions, dengue was the only one among neglected tropical diseases to show an increase in mortality in recent years. Factors related to the life cycle of the main vector, females of Aedes aegypti mosquito, influence the spatial distribution and the seasonal nature of the disease. The incidence of dengue cases is dependent on a complex network of relationships between vector, virus and host, as well as the occurrence of severe cases and death. Since the introduction of the virus, the state of São Paulo has been presenting epidemics involving an increasing number of municipalities, incidence of cases and deaths due to dengue. Objective-To evaluate the spatial, temporal and spatial-temporal distribution of dengue deaths in the state of São Paulo. Methods-This is an ecological study, with spatial and temporal components, based on the notification of dengue deaths at SINAN, with the municipalities and microregions of the state of São Paulo as analysis units from 1998 to 2017. Deaths from dengue in the State of São Paulo were described according to sex and age. The crude mortality rates standardized by sex and age and smoothed by the local empirical Bayesian method were estimated and mapped according to the municipality of residence. The serotypes detected by the Adolfo Lutz Institute were mapped according to microregion. The temporal trends of mortality were estimated. High-risk space and space-time clusters and spatial variation in time trend were detected and mapped. The spatial relative risk of dengue mortality adjusted by time and covariables considered was estimated by Latent Gaussian Bayesian models with INLA approach (2007-2016). It was approved by the Research Ethics Committee of the School of Public Health of the University of São Paulo under opinion number 1,687,650. Results-A total of 1,121 dengue deaths with laboratory confirmation were identified and residents of the State of São Paulo between 1998 and 2017. The median age was 57 years. The annual average of the gross mortality from dengue in State of São Paulo in the historical series was 65

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