Evaluation of the grass infusion-baited autocidal ovitrap for the monitoring of Aedes adgypti (L).
AbstractAutocidal ovitraps used for the monitoring of Aedes (Stegomyia) aegypti (L.) (Diptera: Culicidae) in Singapore are routinely stocked with cow-grass (Axonopus commpressus) infusion. The optimum concentration of this infusion was determined to be a 1:4 dilution of a stock infusion prepared by fermenting dried cow-grass in tap water at a rate of 10g/l. Aedes aegypti females confined in an empty room and offered an ovitrap baited with cow-grass in competition with a range of common oviposition sites (plastic bottle, paper cup, plastic pail, flower pot plate, Coca-Cola can, and vase) laid significantly more eggs in the ovitrap than in the next most competitive container. The number of eggs laid in the ovitrap did not change with the competitiveness of the other sites offered, nor with the number of other sites, but it did change – albeit non-linearly – with the number of mosquitoes released. Implications for the interpretation of quantitative ovitrap data for the monitoring of mosquito populations are discussed.
Siang Tang, Choon, Lam-Phua, Sai Gek, Chung, Youne Kow & D Giger, Andrew. (2007). Evaluation of the grass infusion-baited autocidal ovitrap for the monitoring of Aedes adgypti (L).. WHO Regional Office for South-East Asia.. http://www.who.int/iris/handle/10665/170377