' 'MOSQUITO REPULSION' '.
Annual progress rept.,
BRITISH COLUMBIA RESEARCH COUNCIL VANCOUVER
Pagination or Media Count:
Experiments, both qualitative and quantitative, with Aedes aegypti, mainly in a specially designed two-air-stream observation chamber, have led to the provisional isolation and identification of a number of unit responses by the mosquitoes to various conditions of their environment. The normal process of host-finding consists f an integrated sequence of essentially mechanical responses. The effect of a repellent vapor in modifying certain of these responses has now been established. This enables the sensory modalities affected by the repellent to be tentatively identified and the possible ways the repellent acts on them to be considered. Repellency is not so much a property as an effect of the chemical, and the total effect may depend on more than one kind of property. In addition to the volatility and far infrared absorption previously considered as important, heat of adsorption and plasticizing properties may also be involved. The implications of these results are considered. Author