Study of the distribution and abundance of the eggs of Aedes aegypti and Aedes albopictus according to the habitat and meteorological variables, municipality of São Sebastião, São Paulo State, Brazil

Abstract

BackgroundThis study focused on the distribution and abundance of the eggs of Aedes aegypti and Aedes albopictus.MethodsEighty ovitraps were exposed for four days of each month in peri- and intradomiciliary environments of 40 urban residences on 20 street blocks that were drawn monthly in Sebastião, SP, between February 2011 and February 2012. The monthly distribution of positive ovitrap indices (POI) and mean egg counts per trap (MET) of Ae. aegypti and Ae. albopictus were analyzed using the Kruskal-Wallis test, followed by the Dwass-Steel-Critchlow-Fligner (DSCF) test. Spearman's rank correlation coefficient and simple linear regression were used to determine the association between the meteorological variables of temperature and rainfall and the number of ovitraps with eggs and the egg count.ResultsThe POI and MET of Ae. aegypti were higher in peridomiciliary premises. A positive correlation was found between the temperature and the number of ovitraps with eggs and the egg count of this species in domestic environments. There was no difference in the POI and MET of Ae. albopictus between the environments. A positive correlation was found between temperature and positive ovitraps of Ae. albopictus in peridomiciliary premises. The POI and MET of Ae. aegypti were higher than those of Ae. albopictus.ConclusionsPeridomiciliary premises were the preferred environments for oviposition of Ae. aegypti. The use of ovitraps for surveillance and vector control is reiterated.

Surveillance of Aedes mosquitoes in different residential types in central zone of Shah Alam, Selangor

“…On top of that, the placement of the ovitraps can also indicate the neglected or the effectiveness of the current prevention and control measure such as larvicides application. Many researchers have reported in their studies, especially in Brazil and America, the ovitraps do not provide the estimation of Aedes mosquitoes population densities but they can give insight into relative changes in the adult female populations [16,30]. However, in this present study, the variables numbers of Aedes among study localities were observed in our data as tabulated in Table 3 and presented in Figure 2.…”

“…The utilization of ovitrap in this study may provide such information beneficial for planning and managing the dengue vectors. The ovitrap is proven to serve as the useful tools for providing the spatial and temporal data and successfully monitors the impacts of control measures [1,6,15,16]. Moreover, entomological studies in Taiwan reported that ovitrap data are more sensitive than the traditional way of larval survey in detecting the low population of Aedes mosquitoes [17,18].…”

Distribution and dynamics of Wolbachia infection in Malaysian Aedes albopictus

“…(sand fly) and Ae. albopictus (Tsai et al, 2004;Chai et al, 2011;Serpa et al, 2013;Das et al, 2014). Several studies have been conducted to determine the average infected rate of Wolbachia in their respective hosts.…”

The Application of Geographic Information System in Dengue Haemorrhagic Fever Risk Assessment in Samut Songkhram Province, Thailand

“…albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area [10]. Meanwhile, the meteorological factors [11] including area height, temperature, and rainfall were found in studies to be relevant to the DHF incidence [12], [13]. However, the DHF incidence in Samut Songkhram were not related to the meteorological factors because the province is small and drainage areas and natural water resources in Samut Songkhram were the Ae.…”