Tire-breeding mosquitoes of public health importance along an urbanisation gradient in Buenos Aires, Argentina
Mem. Inst. Oswaldo Cruz
; 106(6): 678-684, Sept. 2011. ilus, graf, tab
Article
in English
| LILACS
| ID: lil-602050
Responsible library:
BR1.1
ABSTRACT
Used vehicle tires are a source of mosquito vectors and a means of their introduction and expansion. With the aim of assessing the effects of urbanisation on the main mosquito vectors in temperate Argentina, the infestation levels of Aedes aegypti (L.) and Culex pipiens L. were studied in used tires from highly urbanised cities to low-urbanised small towns in Buenos Aires. Immatures of both species accounted for 96 percent of the 9,722 individuals collected; the total individuals collected represented seven species. The percentage of water-filled tires containing mosquitoes [container index (CI)] was 33 percent and the percentage of infested sites [site index (SI)] was 65.2 percent. These indexes decreased significantly from low to high urbanisation levels for both mosquito species. The relative abundance (RA) of Ae. aegypti immatures was slightly higher toward large cities, but showed no difference for Cx. pipiens. The CI of shaded tires was significantly higher than the CI of exposed tires for both mosquito species. There was no difference in RA values between shaded and sunlit tires. The CI and the SI were highest during the summer across the urbanisation levels, except for Cx. pipiens, which continued to increase during the autumn in small towns. Results related to urbanisation gradient, sunlit exposure and seasonality are discussed.
Full text:
Available
Collection:
International databases
Health context:
Neglected Diseases
Health problem:
Dengue
Database:
LILACS
Main subject:
Aedes
/
Culex
Limits:
Animals
Country/Region as subject:
South America
/
Argentina
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2011
Document type:
Article
Affiliation country:
Argentina
Institution/Affiliation country:
Universidad de Buenos Aires/AR