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01.12.2012 | Research | Ausgabe 1/2012 Open Access

Malaria Journal 1/2012

Modeling the role of environmental variables on the population dynamics of the malaria vector Anopheles gambiae sensu stricto

Malaria Journal > Ausgabe 1/2012
Paul E Parham, Diane Pople, Céline Christiansen-Jucht, Steve Lindsay, Wes Hinsley, Edwin Michael
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1475-2875-11-271) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests, financial or otherwise.

Authors’ contributions

PEP conceived of the study design and framework, directed the research and wrote the manuscript. DP and CCJ both made significant contributions to the parameterization work, components of the model, and data fitting. SL contributed multiple unpublished datasets and parameterization work. WH contributed computational assistance in multiple phases of the project. EM contributed to the concept of the study. All authors read and approved the final manuscript.



The impact of weather and climate on malaria transmission has attracted considerable attention in recent years, yet uncertainties around future disease trends under climate change remain. Mathematical models provide powerful tools for addressing such questions and understanding the implications for interventions and eradication strategies, but these require realistic modeling of the vector population dynamics and its response to environmental variables.


Published and unpublished field and experimental data are used to develop new formulations for modeling the relationships between key aspects of vector ecology and environmental variables. These relationships are integrated within a validated deterministic model of Anopheles gambiae s.s. population dynamics to provide a valuable tool for understanding vector response to biotic and abiotic variables.


A novel, parsimonious framework for assessing the effects of rainfall, cloudiness, wind speed, desiccation, temperature, relative humidity and density-dependence on vector abundance is developed, allowing ease of construction, analysis, and integration into malaria transmission models. Model validation shows good agreement with longitudinal vector abundance data from Tanzania, suggesting that recent malaria reductions in certain areas of Africa could be due to changing environmental conditions affecting vector populations.


Mathematical models provide a powerful, explanatory means of understanding the role of environmental variables on mosquito populations and hence for predicting future malaria transmission under global change. The framework developed provides a valuable advance in this respect, but also highlights key research gaps that need to be resolved if we are to better understand future malaria risk in vulnerable communities.
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