Seasonality on the life cycle of Aedes aegypti mosquito and its effects on dengue outbreaks
نویسندگان
چکیده
Dengue is a vector-borne disease transmitted by the mosquito Aedes aegypti. It has been observed that its incidence is strongly influenced by temperature and other abiotic factors like rainfall and humidity. In this work we compare the effects of seasonality in temperature that affect the entomological parameters of the mosquito with precipitation that affects the hatchery capacity. We also analyze its joint action using a dynamical model for the life cycle of Aedes aegypti and historical weather data from 8 regions of Mexico. We found that the joint action of different mechanisms can enhance the prevalence of the disease, but also inhibit it when they act in an asynchronous way. We found that for the studied regions, the seasonality of the low temperature rather than mean temperature is the main driving force of Dengue outbreaks. We also analyzed the role of the diapause in these kinds of out∗Corresponding author. Email addresses: [email protected] (Emilene Pliego Pliego), [email protected] (Jorge Velázquez-Castro), [email protected] (Andrés Fraguela Collar) Preprint submitted to Applied Mathematical Modelling May 23, 2016 ar X iv :1 60 5. 06 43 0v 1 [ qbi o. PE ] 2 0 M ay 2 01 6 breaks. The methodology developed here can be used to discover the underlying mechanism of Dengue outbreaks in different regions and thus help to apply targeted control measures.
منابع مشابه
Phylogenetic Analysis of Aedes aegypti Based on Mitochondrial ND4 Gene Sequences in Almadinah, Saudi Arabia
Background: Aedes aegypti is the main vector of the yellow fever and dengue virus. This mosquito has become the major indirect cause of morbidity and mortality of the human worldwide. Dengue virus activity has been reported recently in the western areas of Saudi Arabia. There is no vaccine for dengue virus until now, and the control of the disease depends on the control of the vector. Objectiv...
متن کاملMining Weather Information in Dengue Outbreak: Predicting Future Cases Based on Wavelet, SVM and GA
Dengue Fever has existed throughout the contemporary history of mankind and poses an endemic threat to most tropical regions. Dengue virus is transmitted to humans mainly by the Aedes aegypti mosquito. It has been observed that there are significantly more Aedes aegypti mosquitoes present in tropical areas than in other climate regions. As such, it is commonly believed that the tropical climate...
متن کاملCharacterization of dengue virus in Aedes aegypti and Aedes albopictus spp. of mosquitoes: A study in Khyber Pakhtunkhwa, Pakistan
Dengue is a vector-borne disease caused by dengue virus. According to the recent report of CDC that one-third population of the world are at high risk with Dengue fever. The prevalence of the dengue hemorrhagic fever was found more in tropical and sub-tropical regions of the world. Aedes mosquitoes was reported as the main cause of transmission of dengue virus. So the current study was planned ...
متن کاملTransmission of African Horse-Sickness by Means of Mosquito Bites and Replication of the Virus in Aedes aegypti
متن کامل
Follow up estimation of Aedes aegypti entomological parameters and mathematical modellings
The dengue virus is a vector-borne disease transmitted by mosquito Aedes aegypti and the incidence is strongly influenced by temperature and humidity which vary seasonally. To assess the effects of temperature on dengue transmission, mathematical models are developed based on the population dynamics theory. However, depending on the hypotheses of the modelling, different outcomes regarding to t...
متن کامل