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Synergistic effect of an ultraviolet feeding cue for an avian repellent and protection of agricultural crops

By S. J. Werner, S. T. DeLiberto, S. E. Pettit, A. M. Mangan

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Abstract

Application strategies for avian repellents are needed to maintain efficacious repellent concentrations throughout the period of needed crop protection. We investigated the repellency of an ultraviolet (UV) feeding cue in the absence of postingestive consequences, the combination of the UV feeding cue and an UV-absorbent, postingestive repellent (i.e., a repellent that causes negative postingestive consequences), and a non-UV feeding cue combined with the UV-absorbent, postingestive repellent in red-winged blackbirds ( Agelaius phoeniceus). In the absence of negative postingestive consequences, 0.2% of the UV feeding cue (wt/wt) was not aversive relative to untreated food (i.e., baseline preference test; P=0.1732). Relative to the repellency of food treated only with the anthraquinone-based repellent, synergistic repellency (i.e., 45-115% increase) was observed when 0.2% of the UV feeding cue was combined with 0.02% or 0.035% anthraquinone (wt/wt). In contrast,

Date 2014
Publication Title Applied Animal Behaviour Science
Volume 159
Pages 107-113
ISBN/ISSN 0168-1591
Publisher Elsevier
DOI 10.1016/j.applanim.2014.06.012
Author Address United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, CO 80521-2154, USA.Scott.J.Werner@aphis.usda.gov
Additional Language English
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Tags
  1. Aluminum
  2. Animal behavior
  3. Animal nutrition
  4. Animals
  5. Animal welfare
  6. Birds
  7. Characteristics
  8. Feeding
  9. Feeding behavior
  10. Plants
  11. Protection
  12. radiation
  13. repellency
  14. Repellents and Attractants
  15. Synergy
  16. vertebrates