A Stochastic Spatial Dynamical Model for Aedes Aegypti

  • Marcelo Otero
  • Nicolás Schweigmann
  • Hernán G. Solari
Original Article

Abstract

We develop a stochastic spatial model for Aedes aegypti populations based on the life cycle of the mosquito and its dispersal. Our validation corresponds to a monitoring study performed in Buenos Aires. Lacking information with regard to the number of breeding sites per block, the corresponding parameter (BS) was adjusted to the data. The model is able to produce numerical data in very good agreement with field results during most of the year, the exception being the fall season. Possible causes of the disagreement are discussed. We analyzed the mosquito dispersal as an advantageous strategy of persistence in the city and simulated the dispersal of females from a source to the surroundings along a 3-year period observing that several processes occur simultaneously: local extinctions, recolonization processes (resulting from flight and the oviposition performed by flyers), and colonization processes resulting from the persistence of eggs during the winter season. In view of this process, we suggest that eradication campaigns in temperate climates should be performed during the winter time for higher efficiency.

Keywords

Mathematical ecology Population dynamics Aedes aegypti Stochastic model Dengue epidemics Temperate climate Spatial model Aedes aegypti dispersal 

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Copyright information

© Society for Mathematical Biology 2008

Authors and Affiliations

  • Marcelo Otero
    • 1
  • Nicolás Schweigmann
    • 2
  • Hernán G. Solari
    • 1
  1. 1.Department of Physics, Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina
  2. 2.Department of Genetics and Ecology, Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina

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