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Responses of free-ranging house sparrows to feed containing primary and secondary repellents

Abstract
We recorded the responses of free-ranging house sparrows (Passer domesticus) to various concentrations of primary repellents and a secondary repellent. Wheat treated with either lime or neem oil was consumed by sparrows at the same rate over 24 hours as plain wheat at all doses. d-pulegone significantly reduced wheat consumption from day 1 onwards throughout the 4 days. Avex™ (containing the secondary repellent anthraquinone) did not significantly reduce wheat consumption on day 1 of exposure, but sparrows ate progressively less repellent wheat over the following days. For both d-pulegone and Avex™, there was a negative relationship between wheat consumption and repellent concentration. In experiment 2, the highest concentrations of Avex™ + d-pulegone combined reduced daily wheat consumption significantly more than Avex™ alone and the effect lasted throughout the 10-day test. These results demonstrate the potential of primary and secondary repellents, presented alone or in combination, for modifying the feeding behaviour of sparrows.
Type
Journal Article
Type of thesis
Series
Citation
Day, T.D., Clapperton, B.K., Porter, R.E.R., Waas, J.R. & Matthews, L.R. (2011). Responses of free-ranging house sparrows to feed containing primary and secondary repellents. New Zealand Journal of Crop and Horticultural Science, available online 11 November 2011.
Date
2011
Publisher
Taylor & Francis
Degree
Supervisors
Rights