PMID: 24346571Dec 19, 2013Paper

Public drinking water supply and egg laying by Aedes aegypti

Revista de saúde pública
Gisela R A Monteiro MarquesFrancisco José Moreira Chaves

Abstract

To evaluate the effect of the quality of publicly supplied water in domestic water tanks on egg laying by female Aedes aegypti. Laboratory study on immature Ae. aegypti, collected from water-tanks in the municipality of Potim, SP, Southeastern Brazil. Each cage contained three types of water in which eggs could be laid: Three choice per test were simultaneously used to deposit the eggs, ovipositor (A) with water collected from a water tank in Taubaté, ovipositor (B) with distilled water (control) and ovipositor (C) water collected from a water tank in the municipality of Potim. Physiochemical parameters were analyzed. The Kruskall-Wallis test was used to analyze the mean number of eggs in each water sample and the Dwass-Steel-Critchlow-Fligner test was used in making comparisons. To evaluate egg laying, an ovipositional activity index was adopted. A significant difference in the number of eggs was found between the liquid solutions tested (H = 45; p < 0.0001). The number of eggs found in water tank samples originating from deep wells (C), was statistically superior to water samples from water tanks originating from superficial wells (A) (p < 0.0001) and from the Control (C) p < 0.0001. There was no significant difference betwee...Continue Reading

References

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