INVESTIGADORES
CARBAJO Anibal Eduardo
artículos
Título:
Spatial distribution pattern of oviposition in the mosquito Aedes aegypti in relation to urbanisation in Buenos Aires: southern fringe bionomics of an introduced vector
Autor/es:
CARBAJO A. E.; SUSANA CURTO,; NICOLAS SCHWEIGMANN,
Revista:
MEDICAL AND VETERINARY ENTOMOLOGY
Editorial:
Royal Entomological Society
Referencias:
Año: 2006 vol. 20 p. 209 - 218
ISSN:
0269-283X
Resumen:
The distribution of Aedes aegypti (L) (Diptera: Culicidae) oviposition in Buenos Aires City is spatially heterogeneous. Oviposition
activity was monitored for a year with a grid of 279 traps at 850-m intervals
that were serviced weekly. Geostatistics were used for the spatial analysis and
generalized linear regression to model oviposition as a function of demographic
and environmental variables. The proportion of weeks infested and the total
number of eggs showed spatial continuity and were higher in areas that had
higher densities of houses and were closer to industrial sites; they were lower
in areas with higher human populations or higher densities of flats. When all
sites were
considered, the spatial structure showed a strong trend, but after
regression, the residuals presented lower spatial dependence. When only
infested sites were considered, the oviposition variables were spatially
autocorrelated and the regression residuals showed little or no spatial
dependence. The spatial pattern of Ae. aegypti oviposition in a highly urbanized city such as Buenos Aires seems to be related to the
urbanization gradient. These urban environments might present different
resource availability or continuity between patches of resources.