Anopheles fauna of coastal Cayenne, French Guiana: modelling and mapping of species presence using remotely sensed land cover data
Mem. Inst. Oswaldo Cruz
;
111(12): 750-756, Dec. 2016. tab, graf
Article
in English
| LILACS
| ID: biblio-829256
ABSTRACT
Little is known about the Anopheles species of the coastal areas of French Guiana, or their spatiotemporal distribution or environmental determinants. The present study aimed to (1) document the distribution of Anopheles fauna in the coastal area around Cayenne, and (2) investigate the use of remotely sensed land cover data as proxies of Anopheles presence. To characterise the Anopheles fauna, we combined the findings of two entomological surveys that were conducted during the period 2007-2009 and in 2014 at 37 sites. Satellite imagery data were processed to extract land cover variables potentially related to Anopheles ecology. Based on these data, a methodology was formed to estimate a statistical predictive model of the spatial-seasonal variations in the presence of Anopheles in the Cayenne region. Two Anopheles species, known as main malaria vectors in South America, were identified, including the more dominant An. aquasalis near town and rural sites, and An. darlingi only found in inland sites. Furthermore, a cross-validated model of An. aquasalis presence that integrated marsh and forest surface area was extrapolated to generate predictive maps. The present study supports the use of satellite imagery by health authorities for the surveillance of malaria vectors and planning of control strategies.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Insect Vectors
/
Anopheles
Type of study:
Prognostic study
/
Qualitative research
Limits:
Animals
Country/Region as subject:
South America
/
English Caribbean
/
Guyana
/
French Guiana
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2016
Type:
Article
/
Project document
Affiliation country:
French Guiana
Institution/Affiliation country:
Institut Pasteur de la Guyane/GF
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