Spatial repellency of metofluthrin-impregnated polyethylene plastic strips against mosquitoes, Aedes aegypti and Culex quinquefasciatus, were studied in a residential area in Hai Phong city, Vietnam. Thirty houses were selected as trial sites; half of these were assigned as untreated control and the other half were assigned for treatment. Primarily, irrespective of the room size, one room was t...

Ecosystem changes caused by anthropogenic activities have modified the environment in ways that at times promote the emergence of vector-borne diseases. Here, we study the effects of combined sewage overflows (CSOs) from urban streams in Atlanta, GA, on oviposition site selection by Culex quinquefasciatus under seminatural field conditions. Counting egg rafts was a reliable indicator of oviposi...

Although lard-can traps have been used for sampling host-seeking mosquitoes for at least a half-century, the materials from which they originally were constructed no longer are available. We therefore devised a method for constructing such devices from parts available in the ventilation industry. These traps, baited with birds and mounted near the tops of trees, were employed to monitor the hos...

He pointed out the coincidence of the time of biting of the mosquito Culex jatigans, with that of the crowding of the filarial embryos in the peripheral circulation. McKenzie (1881) was able to demonstrate the reversibility of the periodicity of the microfilariae by reversing the sleeping and the waking habits of the infected human host. He also noted the coincidence of the biting hours of the ...

The medical importance of mosquitoes as vectors for transmission of serious diseases that cause morbidity, mortality, economic loss, and social disruption such as malaria, lymphatic filariasis, and viral diseases is well-documented1. Mosquitoes not only cause nuisance by their bites but also transmit deadly disease like malaria, filariasis, yellow fever, dengue and Japanese encephalitis, contri...

The genus Culex is not only one of the most dominant in terms of number of species and individuals but also one of the most complex and difficult genera among the mosquitoes of Southeast Asia. In a recent preliminary study a rough /estimate of between 120-130 species, both previously recognized and new, have been seen from the area. They are distributed among 7 subgenera as follows: Neoculex wi...

Encephalitis vector surveillance (EVS) traps were used to study the attractant effect of CO2 and 1-octen-3-ol (octenol) on mosquitoes at 2 different locations in southeast Queensland. Octenol alone was only slightly attractive for Aedes vigilax. There was a significant increase in the numbers of Ae. vigilax and Aedes funereus caught when octenol was added to CO2, although catches of Culex annul...