Keywords
Hypothenemus hampei
coffee
olfactometer
attractant
How to Cite
Abstract
Several assays were conducted using droptype olfactometers built according to the model of Pavis and Minost (1993) to evaluate the response of the coffee berry borer, Hypothenemus hampei Ferrari, to different sources of natural and artificial odors. Initially, a simple methodology was developed to assess the attractiveness of the borer to the different attractant sources; this approach was later applied to evaluate the level of attraction of fruits from different coffee species and varieties. The methodology was adapted for the use of volatile compounds (terpenes and essential oils). Filter paper was initially used as a diffusion support; however, based on the results obtained, it was replaced with capillaries to allow a constant and uniform release of volatiles. The results showed that the glass olfactometer is the most suitable model, that the borer remains active throughout the day, and that the fruits retain their attractiveness up to 24 hours after harvesting. Among the varieties and species evaluated, the Pacas variety was identified as one of the most attractive, whereas the Canephora and Robusta species were the least attractive. In the evaluation of liquid aromatic products, the filter paper used as a diffusion support does not allow detection of the borer’s response. Replacing the filter paper with capillaries produces a positive effect of cymene at a concentration of 0.1%.
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