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Phenolic tsetse attractants in host urine were shown to form gradually from proattractants identified as a mixture of glucuronates and sulphates. The breakdown of proattractants is predominantly due to microbial activity. Of the eight bacteria isolated from buffalo urine three have demonstrated varying ability to give rise to free phenols the formation of which was monitored by observing the build-up of 4-cresol by means of gas chromatography. These observations may provide a useful biotechnological model for controlled release of these semiochemicals in the field.

Seven phenolic compounds (phenol, 3- and 4-cresols, 3- and 4-ethylphenols, and 3- and 4-n-propylphenols) previously shown to be components of a fraction of an extract of buffalo urine which was active as a tsetse attractant, were evaluated in field experiments, individually at different concentrations, and in blends. The results indicate that 4-cresol and 3-n-propylphenol are the most important components for the of the attractancy phenolic mixture.

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The origin of phenolic tsetse attractants from host urine: Studies on the pro-attractants and microbes involved

The Role of 4-Cresol and 3-n-Propylphenol in the Attraction of Tsetse Flies to Buffalo Urine

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2 results

The origin of phenolic tsetse attractants from host urine: Studies on the pro-attractants and microbes involved

The Role of 4-Cresol and 3-n-Propylphenol in the Attraction of Tsetse Flies to Buffalo Urine