INVESTIGADORES
ALMIRON Walter Ricardo
artículos
Título:
Characterzation of Culex quinquefasciatus (Diptera: Culicidae) larval hábitats at ground level and temporal fluctuations of larval abundance in Córdoba, Argentina.
Autor/es:
GRECH, MARTA; SARTOR P.; ESTALLO ELIZABET,; LUDUEÑA ALMEIDA, F. F.; ALMIRÓN, WALTER R.
Revista:
MEMóRIAS DO INSTITUTO OSWALDO CRUZ.
Editorial:
FUNDACO OSWALDO CRUZ
Referencias:
Lugar: Rio de Janeiro; Año: 2013 vol. 108 p. 772 - 777
ISSN:
0074-0276
Resumen:
The aims of this study were to characterise the ground-level larval habitats of the mosquito Culex quinquefasciatus, to determine the
relationships between habitat characteristics and larval abundance
and to examine seasonal larval-stage variations in Córdoba city.
Every two weeks for two years, 15 larval habitats (natural and
artificial water bodies, including shallow wells, drains, retention
ponds, canals and ditches) were visited and sampled for larval
mosquitoes. Data regarding the water depth, temperature and pH,
permanence, the presence of aquatic vegetation and the density
of collected mosquito larvae were recorded. Data on the average
air temperatures and accumulated precipitation during the 15 days
prior to each sampling date were also obtained. Cx. quinquefasciatus
larvae were collected throughout the study period and were generally
most abundant in the summer season. Generalised linear mixed models indicated the average air temperature and presence of dicotyledonous aquatic vegetation as variables that served as important predictors of larval densities. Additionally, permanent breeding sites supported high larval densities. In Córdoba city and possibly in other highly populated cities at the same latitude with the same environmental
conditions, control programs should focus on permanent larval habitats
with aquatic vegetation during the early spring, when the Cx.
quinquefasciatus population begins to increase.