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Biodiversity of Culicidae and its interaction with arboviruses and malaria in the Atlantic Forest

Grant number: 08/05618-4
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2008
Effective date (End): April 30, 2012
Field of knowledge:Health Sciences - Collective Health
Principal Investigator:Maria Anice Mureb Sallum
Grantee:Gabriel Zorello Laporta
Home Institution: Faculdade de Saúde Pública (FSP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:05/53973-0 - Systematics of the Anopheles (Nyssorhynchus) (Diptera: Culicidae), AP.TEM

Abstract

Introduction - Complex interactions are present between biodiversity of mosquitoes (Diptera, Culicidae) and the dynamics of vector-borne arboviruses and malaria-parasites, which are infectious agents that can cause diseases in humans and other animals. Objectives - to apply habitat-suitability modelling for arboviral and malarial mosquito vectors in Vale do Ribeira, southeastern São Paulo state, sub-region of Serra do Mar of Atlantic Forest. In a local scale of this region, to relate the spatial heterogeneity with biodiversity and the role of this with dynamics of malarial transmission in the Parque Estadual da Ilha do Cardoso. Methods - Potential distribution maps were generated for the vectors of arboviruses, such as Aedes serratus, Aedes scapularis and Psorophora ferox. Distribution maps generated for Anopheles cruzii, Anopheles bellator and Anopheles marajoara were correlated with spatial distribution of human malaria. Regression models were applied to correlate the spatial heterogeneity with biodiversity of mosquitoes. It was elaborated a mathematical model to explain the effect of biodiversity on the transmission of Plasmodium. Results - People are more exposed to bites of Ae. serratus, Ae. scapularis and Ps. ferox in warmer and wetter areas. Correlations between An. marajoara and spatial pattern of malaria were positive and significant, while An. cruzii and An. bellator were not important. Spatial heterogeneity was positively associated with biodiversity of mosquitoes. Higher levels of biodiversity of both mosquitoes and vertebrates (birds and mammals) was associated with low risk of Plasmodium transmission. Conclusions - Habitat-suitability modelling is a tool for the surveillance of vector-borne arboviruses. It is recommended greater attention to An. marajoara which can be a potential secondary vector of Plasmodium parasites in natural or deforested open areas of the Atlantic Forest. Plant diversity could increase spatial heterogeneity which can be associated with higher mosquito diversity. Higher levels of mosquito, avian and mammalian diversities may decrease the number of infectious bites of An. cruzii. Future research on the epidemiology of malaria and arboviruses should include the following combinations of subjects: climate change and arboviruses, mosquito and spatial heterogeneity, and biodiversity and malaria. Descriptors: Environment and Public Health; Epidemiology; Atlantic Forest; Ecology; Biodiversity; Spatial distribution; Statistical model; vivax-malaria; Arboviruses; Disease vectors. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LAPORTA, GABRIEL ZORELLO; RIBEIRO, MILTON CEZAR; RAMOS, DANIEL GARKAUSKAS; MUREB SALLUM, MARIA ANICE. Spatial distribution of arboviral mosquito vectors (Diptera, Culicidae) in Vale do Ribeira in the South-eastern Brazilian Atlantic Forest. Cadernos de Saúde Pública, v. 28, n. 2, p. 229-238, Fev. 2012. Web of Science Citations: 6.
LAPORTA, GABRIEL ZORELLO; RAMOS, DANIEL GARKAUSKAS; RIBEIRO, MILTON CEZAR; MUREB SALLUM, MARIA ANICE. Habitat suitability of Anopheles vector species and association with human malaria in the Atlantic Forest in south-eastern brazil. Memórias do Instituto Oswaldo Cruz, v. 106, n. 1, p. 239-249, AUG 2011. Web of Science Citations: 27.
GABRIEL ZORELLO LAPORTA; DANIEL GARKAUSKAS RAMOS; MILTON CEZAR RIBEIRO; MARIA ANICE MUREB SALLUM. Habitat suitability of Anopheles vector species and association with human malaria in the Atlantic Forest in south-eastern Brazil. Memórias do Instituto Oswaldo Cruz, v. 106, p. -, Ago. 2011.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
LAPORTA, Gabriel Zorello. Biodiversidade de Culicidae e sua interação com arboviroses e malária na Mata Atlântica. 2012. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Saúde Pública São Paulo.

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