Graphical scheme of the one-way olfactometer.

<p>The olfactometer is represented by a glass cylindrical flight chamber into which an individual male is manually released. The air is filtered by a charcoal filter, humidified by bubbling through a glass bottle with distilled water and dispersed by passing through a nylon net. A glass gas washing bottle (300ml) contains the olfactory cues (insects or control). The length of the flight chamber is virtually separated into three equal sectors: A) where the airflow with the olfactory stimuli enters the olfactometer, C) where male is released, and B) positioned between the other two.